• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
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  • 优先权
    • 专利摘要:
    Measuring wheel set (1) for rail vehicles for detecting forces occurring during driving (Y, Q, Tx, e), with at least one wheel disc (2, 3, 5, 6, 7) of the measuring wheel (1) at a distance of different measuring radii (I , II, III) arranged sensors (R0l_a, Rol_i, ...), preferably strain gauges, which are connected to Wheatstone bridges (MB) and of which bridge signals (BS) to a computer (4) of the measuring wheel (1), to solve a number of N linearly independent equations for determining the forces acting on the Meßradsatz (1) forces (Y, Q, Tx, e), at least three, by 60 ° and integral divisions / multiples thereof offset sensor (R0I_a, T60l_a , S120l_a, ...) are arranged per measuring radius (I, II, III), and that the computer (4) is designed for equalizing the bridge signals (BS) per measuring radius (I, II, III) and thereby recognizes accepted mathematical methods of electrical engineering are used.
    公开号:AT510443A4
    申请号:T1676/2010
    申请日:2010-10-07
    公开日:2012-04-15
    发明作者:Martin Dipl Ing Dr Joch；Philipp Dipl Ing Mader；Helmut Ing Hutterer
    申请人:Pj Messtechnik Gmbh；
    IPC主号:
    专利说明:

    f f i: J 14089
    Measuring wheel set for rail vehicles
    The invention relates to a measuring wheel set for rail vehicles for detecting forces occurring in the ferry operation, with arranged on at least one wheel disc of the measuring wheel at a distance of different measuring radii sensors, preferably strain gauges, for outputting measurement signals, and with Wheatstone measuring bridges to which the measurement signals can be supplied and of which Bridge signals to a computer of the Meßradsatzes, to solve a number of N linearly independent equations for determining the forces acting on the Meßradsatz forces, can be fed.
    The document DE 10 2005 051 498 B3 thus discloses a measuring wheel set for detecting forces and the position of the contact point between a wheel of a rail vehicle and the rail. In particular, the described Meßradsatz used to determine the following forces shown in Figure 1: Q (force in the z-direction), Y (force in y-direction) and Tx (force in the x-direction) and the distance of the contact point e between the wheel and Rail from Radrücken as well as the axis of rotation of the wheel disc. By identifying these forces, information can be provided on the derailment safety and track loading of a new wheel set.
    In the known measuring wheel set sensors are arranged on three measuring radii on four different angular divisions, which are each arranged rotated by 45 ° to each other. The sensors are combined into Wheatstone bridges, whereby two independent information or equations are obtained for each bridge in order to determine the forces given above. The different weighting of the individual influences is taken into account by coefficients k1 to k12, which are determined during a calibration in which defined forces are introduced from defined directions into the wheel set.
    In the known Messradsatz has proved to be a disadvantage that the measurement results are dependent on the angle or depend on the respective angle of rotation of the wheel. Furthermore, the known Meßradsatz is only for calculating the forces on those disclosed in the embodiment of the document
    Measuring wheel set with a double crank as Radscheibenform usable, which is a significant limitation, since new wheelsets with other wheel disc shapes can not be measured. FIG. 2 shows, by way of example, a number of different wheel disc shapes of wheelsets.
    However, a particular disadvantage of the known measuring wheel set has been found that common calibration devices for Meßradsätze consider only Einzelensensorsignaie and thereby, which are not taken into account by the calculation of the various measurement signals harmonics higher order, which leads to measurement errors. This fact is counteracted in prior art methods in that the signal harmonics are smoothed by low-pass filters with a cutoff frequency of 20 to 30 Hz. The detection of highly dynamic processes, such as points heart driveways, rail joints, etc., is thus not or only partially possible. Another disadvantage of the known Meßradsatzes is that the calibration is only up to 20 kN. However, as the measurement range of the measuring wheel set is higher by an order of magnitude, the results of this calibration are extrapolated. This procedure is only permissible with completely linear behavior, which is not always the case with a measuring wheel set.
    In the known measuring wheel set, a special form of calibration is used to suppress non-mean free harmonics. The measuring signal, which is subject to harmonics, has a zero crossing with respect to the desired signal (first-order shaft) at an angular position of the wheel which depends on the order of the top shaft. According to the prior art, the wheel is calibrated at this angular position. However, the calibration factors or coefficients thus determined for calculating the measurement signal apply only to zero crossings of the top waves. Thus, the measurement signal can only be calculated correctly at angular positions where this occurs. Signal components that do not show this are calculated incorrectly because of the harmonics. The state of the art is to correct this error by subsequent low-pass filtering of the result. The harmonics are eliminated by this filtering, but once again no highly dynamic measurement is possible. 3:
    The invention has for its object to provide a measuring wheel for rail vehicles, in which the above-mentioned disadvantages are avoided.
    According to the invention, this task is solved in that at least three, each offset by 60 ° and integer divisions / multiples thereof sensor per measuring radius are arranged, and that the computer for Gleichg ^ judge the bridge signals per measuring radius is formed.
    This has the advantage that the laws of the field of electrical engineering / electronics can be applied. In this case, the individual measurement signals of the Wheatstone bridges or full bridges are charged together in such a way that the result of the calculation of the measured signals of a group, a sufficient suppression of harmonics ais also the influence of centrifugal forces, as well as the shift of the mean value of bridge output signals (drift) result Has.
    The calculation of the sought forces is done by means of a system of linearly independent equations. The coefficients of this system of equations are determined during the calibration of the measuring wheel set. If this result shows impermissible deviations in the case of plausibility checks, the solution of the equation system is improved by means of an iteration method. This iteration method uses coefficient sets determined during the calibration of the wheel set, from which the coefficients which best match the equation system are extracted. This allows for the calculation of the forces, the consideration of the shift of the contact point of the force application.
    It is particularly advantageous in the case of the measuring wheel set that knowledge of the angle of rotation is not required for the method described here. The measuring method described is functional in contrast to the prior art even with a non-rotating measuring wheel. In the measuring method, the technically relevant harmonic components in the individual bridge signals are completely eliminated or greatly attenuated without determination or knowledge of the rotation angle in relation to the stationary coordinate system. By means of the mathematical solution according to the invention of the signal computation from the circulating bridge signals and via corresponding configuration of the Wheatstone bridges and grouping of bridge signals into groups as a function of the respective wheel disc shape, it is possible in the measuring method according to the invention to determine the parasitic component from the harmonic input signals in the level of the output signal to typically less than 0.5% for the measured quantities Y and Q. As a result, in comparison with the method used in the prior art, a practically error-free determination of the required parameters on the one hand with non-rotating wheelset (stationary vehicle) is made possible, while on the other hand taking into account the vibration eigenmodes of the respective wheel disks makes it possible to increase the dynamics of the detected parameters.
    Further advantageous embodiments of the system according to the invention are explained in more detail below with reference to FIGS.
    FIG. 1 shows the wheel of a rail vehicle together with the associated coordinate system for determining the forces acting on the wheel and the rail.
    FIG. 2 shows different wheel disc shapes.
    FIG. 3 shows a measuring wheel set.
    FIG. 4 shows a wheel disc of the measuring wheel set with measuring sensors according to a first exemplary embodiment of the invention.
    FIG. 5 shows Wheatstone measuring bridges of the measuring wheel set according to the first exemplary embodiment of the invention.
    FIG. 6 shows the bridge signals of the Wheatstone measuring bridges according to FIG. 5. FIG. 7 shows the rectified bridge signals according to FIG. 6.
    FIG. 8 shows a wheel disc of the measuring wheel set with measuring sensors according to a second exemplary embodiment of the invention.
    FIG. 9 shows Wheatstone measuring bridges of the measuring wheel set according to the second exemplary embodiment of the invention.
    FIG. 10 shows the bridge signals of the Wheatstone measuring bridges according to FIG. 9. FIG.
    FIG. 11 shows the rectified bridge signals according to FIG. 10.
    FIG. 12 shows a wheel disc of the measuring wheel set with measuring sensors according to a third exemplary embodiment of the invention.
    FIG. 13 shows Wheatstone measuring bridges of the measuring wheel set according to the third exemplary embodiment of the invention.
    FIG. 14 shows steps carried out in the computer of the measuring wheel set for solving the linearly independent equations.
    FIG. 3 shows a measuring wheel set 1 for rail vehicles for detecting forces occurring in the ferry mode. In particular, the Meßradsatz 1 is used to determine the forces shown in Figure 1: Q (force in the z-direction), Y (force in y-direction) and Tx (force in x-direction) and the distance of the contact point e between the wheel and rail from the wheel back as well as from the axis of rotation of the wheel disc. By identifying these forces, information can be provided on the derailment safety and track loading of a new wheel set.
    The measuring wheel set 1 has two wheel disks 2 and 3, on which sensors are arranged at a distance of different measuring radii, which are formed by strain gauges (DMS). The strain gages are interconnected to Wheatstone gauges MB, which are well known in the field of metrology. From the measuring bridges bridge signals BS are delivered to a computer 4, which is designed taking into account the bridge signals BS and other input parameters to solve a number of N linearly independent equations to the above-mentioned forces on a stationary or ferry in the wheel disk 2 and 3 to investigate. In the following, three embodiments of the invention will be explained in more detail.
    FIG. 4 shows a wheel disc 5 of a measuring wheel set according to a first exemplary embodiment of the invention. The wheel disc 5 has an inner side IS and an outer side AS. On the wheel disc 5, on a first measuring radius I, which has a radius Y1, on the inside IS there are six measuring sensors ROI_i, S601_i, T1201_i, R1801_i, S240IJ and T300_J on three axes. *· * «· * *« «« « »9 · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · ················································
    Angle pitches or diameters R, S and T of the wheel disc 5 are arranged, which are each arranged rotated 60 ° to each other. Another six sensors R0l_a, S60l_a, T120l_a, R180l_a, S240l_a and T300l_a are arranged opposite the above sensors on the outer side AS of the wheel disc 5. Likewise, twelve further measuring sensors on a second measuring radius II and twelve further measuring sensors on a third measuring radius III of the wheel disc 5 are arranged.
    FIG. 5 shows nine Wheatstone measuring bridges MB. Four of the total of 36 DMS of the wheel disc 5 are interconnected to form a Wheatstone bridge. Here, the measuring sensors of the three diameters R, S and T of the first measuring wheel I are interconnected with the upper three measuring bridges MB1 to form a group, three bridge signals RJ, S_l and T_l being output to the computer 4 from these three measuring bridges MB1. Another three bridge signals R_ll, SJI and TJI are supplied by the three measuring bridges MB2, to which the measuring sensors of the second measuring wheel II are interconnected. An additional three bridge signals RJII, S_III and T_lll are supplied by the three measuring bridges MB3, to which the measuring sensors of the third measuring wheel III are connected to one another.
    In the figure 6, the above-indicated new bridge signals or Umlaufbiegesignale are shown when a pure force in the Y direction is applied to the wheel disc 5. On the abscissa the angular position of the wheel disc 5 is shown in a full revolution of the wheel disc 5 and on the ordinate the respective bridge signal (in 103 pm / m in the top figure, in pm / m in the middle and bottom). The upper figure shows the three bridge signals RJ, SJ and TJ of the first measuring wheel I, the middle figure shows the three bridge signals RJI, SJI and TJI of the second measuring wheel II and the lowest figure of FIG. 6 shows the three bridge signals RJII, SJII and TJII of FIG third measuring wheel III. What is striking about these bridge signals is that the bridge signals of the first measuring wheel I and second measuring wheel II are purely sinusoidal, the bridge signals RJII, SJII and TJII of the third measuring wheel III have a different course. The reason for this is the type of interconnection, the position of the applied strain gages and the ft ft. 4 ft. Ft 4 ft ft ft ft 4 ft 4 ft ft 7 ft ft · / · ft ·
    Elongation curve at the wheel disc with an applied force. Due to these boundary conditions, the bridge signals can have shapes which are sinusoidal or the signals can also deviate greatly from the sine
    FIG. 7 shows the bridge signals GL_I, GLJI and GLJII of the three measuring radii rectified by the computer 4. In the computer 4 different formulas for rectification of the bridge signals are provided, wherein the choice of the appropriate formula of different influencing factors (for example, wheel disk shape, sensor arrangement, waveform ...) is dependent. According to the first embodiment, the bridge signals are rectified according to the following formula in the computer 4:
    GLJ = RJ + SJ + TJ
    GL II = R_II + S_II + T II GLJII = RJ11 + SJ1I + TJI1
    The rectification is thus carried out with a known in the art of electrical engineering formula, which is exploited here to rectify the information content of mechanical bending stresses. As can be seen with reference to FIG. 7, all three rectified bridge signals have a uniform value, irrespective of the angular position of the wheelset 5. It should be noted that signals which deviate very much from the sine (such as the bridge signals of the third measuring wheel III) can be rectified without great ripple by the described type of rectification. These values of the rectified bridge signals are used by the computer 4 to solve the linearly independent equations.
    As can be seen on the basis of the above first exemplary embodiment, the further calculation in the computer 4 and thus also the determined result are independent of the angular position of the wheelset 5. This has the advantage that also on the non-rotating, ie stationary, wheel set fifth Forces can be applied and these can be calculated for control without reducing the accuracy of measurement or calculation. In a calibration and iteration method described below, the coefficients of the linearly independent equations can be refined such that a particularly accurate measurement of the values measured in the ferry operation with the .mu. * * * *. * * * * Messradsatz 1 occurring forces can occur.
    FIG. 8 shows a wheel disc 6 of a measuring wheel set according to a second exemplary embodiment of the invention. According to this embodiment, 6 sensors are mounted only on the outer side AS of the wheel disc, but with an additional 18 sensors are mounted on a further three diameters U, V and W. Depending on the arrangement of the probes, the measuring wheel set can be optimized for particularly sensitive and therefore accurate measurement of tensile, compression or bending stresses. The arrangement of all sensors on only one side has advantages in terms of Applikatonsaufwand, as well as no hole in the wheel disc must be provided to guide the wiring from the wheel inside to the outside of the wheel. However, the one-sided interconnection is not possible with all wheel discs, just as it is not always a sufficient suppression of harmonics possible. A balance of the advantages and disadvantages of choosing the application method is absolutely necessary
    FIG. 9 shows the Wheatstone measuring bridges MB of the three measuring radii I, II and III and in FIG. 10 the nine bridge signals resulting from these measuring bridges. For this type of arrangement, the rectification has proved to be particularly advantageous with the aid of the following equation: glj = 4r-12 + s-i2 + T-i2 + u_i2 + y_ / 2 + W_12 GL_II - ^ R_II2 + S ^ II2 + T_II2 + U II2 + V_II2 + W II2 GL _ III = yjR _ III2 + 5_. III2 + T _ III2 + t / .. III2 + V1II2 + W III2
    This is also a formula known from the field of electrical engineering, which is used here to rectify the information content of mechanical bending stresses. As can be seen with reference to FIG. 11, the resulting rectified bridge signals are independent of the angular position of the wheelset 6. This results in a large number of advantages.
    In order to indicate the variety of possibilities of measuring wheel sets according to the invention, a measuring wheel set 7 according to a third exemplary embodiment is shown in FIGS. 12 and 13. In the measuring wheel 7, the measuring radii I, II
    and III are not evenly distributed and on the measuring radius II sensors are arranged only on the outside AS. In general, the measuring radii are not distributed uniformly on the wheel disc, but the positions of the measuring radii are dependent on the course of the radial expansions on the wheel disc. Four groups of measuring bridges MB are formed for evaluating the measuring signals MS of the measuring probes, with a separate bridge signal being determined for the second measuring radius II in a total of six measuring bridges for each of the diameters R, S, T, U, V and W. In general, this methodology is the optimum of application effort and optimal suppression of the ripple of the rectified signals.
    The steps for solving the linearly independent equations are now explained in more detail with reference to FIG. Strain gauges DMS are connected to Wheatstone gauges MB1 to MB4 (indicated as nn to nim in FIG. 14). The signals of the Wheatstone gauges are rectified in the blocks GL to obtain an angle-independent value of the bridge signals.
    The application of equations from the electrical engineering for the processing of bending stresses is based on the knowledge that the measured signals of the full or flat bridges, which also have a sinusoidal course by nature, can be regarded as the phases of a three-phase network. All approaches to uncontrolled rectification in the field of three-phase AC technology can be used: For uncontrolled rectifiers, the switching process takes place without additional control electronics only because of the applied electrical voltages (potential difference) at the diodes. The property of diodes is exploited to allow electrical current to flow in one direction only. In measuring wheel sets and measuring methods according to the invention, no diodes are used to rectify the signals. The rectification is done using mathematical formulas and Boolean algebra to mathematically map the function indicators of the diodes. For this consideration, only the following conditions must be met: 1. The signals must be sinusoidal. 10 2. The amplitudes of all signals that are on a radius (with the same amount of force applied) must be the same size. 3. The phase difference of all phases must be constant.
    Condition 2 is fulfilled in any case, deviations can only be caused by different K-factors of the strain gauges, inaccuracies in the application and component tolerances. These influencing factors are either negligible or can be adjusted by a correction factor derived from the calibration of the measuring wheel set.
    Condition 3 is also fulfilled in each case, since the phase position of the individual signals is determined by the position of the applied full or half bridges.
    Condition 1 is the key point of the measuring wheel set according to the invention. Depending on the harmonic content of the signals used, the input signals are more or less deformed sinusoidal signals. Thus, the bridge signals, depending on application position, interconnection method and combination of applied forces / quantities Y, Q and e have trapezoidal or triangular shape. As a result, the rectified signal has a high proportion of harmonics, which falsify the measurement result. This problem is counteracted by means of the following approaches: • Selection of suitable application positrons of the probes to obtain a sinusoidal signal. • Selection of suitable wiring methods (probes in measuring bridges to quarter, half or full bridges) to obtain a sinusoidal signal. • Compute more than three phases to rectify the signal. • Selecting a suitable method from the field of three-phase technology to rectify the bridge signals.
    Based on these findings, it is possible to optimally select the position of the measuring probes and to interconnect the measuring signals emitted by them in measuring bridges.
    The computer is now far designed to perform a calibration measurement for determining the coefficients of the linearly independent equations, wherein on the basis of three different calibration cases with predetermined forces on the measuring wheel a coefficient set is determined. For this purpose, the calibration of the measuring wheel set and with it the determination of the coefficients in a block KO for the calculation of the independent equations in the block GL take place in a block KM. The three rectified bridge signals GLJ, GLJI and GLJII are evaluated using the following formulas to determine the provisional Y, Q and e values of the forces: Y_erg = A * GLJ + B * GLJI + C * GLJII Formula 1 Q_erg = D * GLJ + E * GLJI + F * GLJII Formula 2 e erg = G * GLJ + H * GL II + I * GLJII Formula 3 GLJ, GLJI, GLJII Rectified bridge signals of the three measurement radii I, II, III A, B ... I Coefficients from calibration to equation solving
    The coefficients A to I are determined from three fixed calibration cases (the type of calibration cases depends on the wheel disc shape, connection method and field of application of the measuring wheel set).
    Calibration case 1: Y = 0 kN Q = 100kN e = 0mm
    Calibration case 2: Y = 100 kN Q = 0 kN e = 0 mm
    Calibration case 3: Y = 100 kN Q = 100kN e = 20 mm
    Thus, with Formulas 1 to 3, preliminary results for Y, Q and e such as: Y erg = 10 kN Q_erg = 50 kN e_erg = 5 mm
    The accuracy of these calculation results is improved in an iteration step. The coefficients A to I are determined in a block KB from three new calibration cases. The calibration cases are selected based on the results of 1) such as:
    Calibration case 1: Y = 0 kN Q = 60 kN e = 0mm
    Calibration case 2: Y = 10 kN Q = 50 kN e = 5 mm
    Calibration case 3: Y = 5 kN Q = 70 kN e = 10 mm
    The values of the forces Y, Q and e of the selected calibration cases are in the range of the values of Y_erg, Q "erg and e_erg calculated in 1) and of a linear one
    Correlation can be assumed. From these calibration cases, the coefficients A 'to Γ are then determined again in a block KOI and the equation system is solved in a block GL1 according to the following equation: Y_erg2 = A' * GLJ + B '* GL II + C' * GLJ II Formula 4 Q_erg2 = D '* GLJ + E' * GL II + P * GLJIf Formula 5 e_erg2 = G '* GLJ + H * * GLJI + Γ, * GL III Formula 6 Y_erg2, Qerg2, e_erg2 are then the results. If necessary, step 2 can also be repeated if it is to be expected that the result will improve. Using the coefficients determined in this way, the forces acting on the wheel disks 2 and 3 and the rails in normal ferry operation can be measured with the measuring wheel set 1 according to the invention.
    It may be mentioned that the rectification of the bridge signals according to the invention is feasible if the sensors are arranged on diameters of the wheelset which are arranged rotated by the following angles: 60 ° and integral divisions / multiples thereof.
    It may be mentioned that also any other or for the individual case adapted calibration cases could be specified.
    权利要求:
    Claims (7)
    [1]
    ::: i3

    1. Measuring wheel set (1) for rail vehicles for detecting occurring during ferry operation forces (Y, Q, Tx, e), with at least one wheel disc (2, 3, 5, 6, 7) of the measuring wheel (1) at a distance different Measuring radii (I, Μ, III) arranged sensors (ROI_a, ROM, ...), preferably strain gauges, for outputting measuring signals (MS), and with Wheatstone bridges (MB) to which the measuring signals (MS) can be fed and of which Bridge signals (BS) to a computer (4) of the Meßradsatzes (1), for solving a number of N linearly independent equations for determining the forces acting on the Meßradsatz (1) forces (Y, Q, Tx, e), are fed, characterized in that at least three measuring sensors (R0l_a, T60l_a, S120l_a, ...) offset by 60 ° and integral divisions / multiples thereof are arranged per measuring radius (I, II, III), and in that the computer (4) is used for rectifying the bridge signals (BS) per measuring radius (I, II, IN) is formed.
    [2]
    2. Messradsatz (1) according to claim 1, characterized in that the rectification of the bridge signals (BS) with the following formulas: GLJ = R_I + S_I + T _l GLJl = R II + S_II + T_II GL1II = R_ III + S_ III + T _ III wherein the sensors (R0l_a, ROM, ...) on the measuring radii I, II and III on the diameters R, S and T are arranged and wherein the diameters (R, S, T) by 60 ° to each other are arranged twisted.
    [3]
    3. measuring wheel set (1) according to claim 1, characterized in that the rectification of the bridge signals (BS) is carried out with the following formula: GL_I = jRJ2 + S_I2 + T_I2 + X_I2 + Y_I2 + Z_IJ GL II = Jr_II2 + < _ / / 3 + T_II2 + X_II2 + Y II2 + Z _II2 GL _ III = ^ RJII2 + S_IH2 + T__IH2 + XIII2 + YIII1 + ZIII2 where the probes (ROI a, ROM, ...) are on the measuring radii I, II and III the diameters R, S, T, X, Y and Z are arranged and wherein the diameters (R, S, T, X, Y, Ζ) are arranged rotated by 30 ° to each other.
    [4]
    4. Measuring wheel set (1) according to one of the preceding claims, characterized in that the computer (4) for performing a calibration measurement for determining the coefficients (A, B, the linearly independent equations is formed, wherein on the basis of at least three different calibration cases with predetermined Forces (Y, Q, e) on the Meßradsatz (1) at least two different coefficient sets (A, Β,., Ι, A ', B', ... I ') are determined.
    [5]
    5. measuring wheel set (1) according to claim 4, characterized in that the computer (4) is designed for performing an iterative process, wherein the determined coefficient sets (A, Β,., Ι, A ', B .. I ') are used in the N linearly independent equations and, on the basis of the forces (Y_erg, Q_erg, e_erg) calculated here, set new calibration cases with other predetermined forces with regard to the forces (Y, Q, e) actually given in the respective calibration failure in order to determine again improved coefficient sets for the calculation of the forces acting on the measuring wheel set (1) forces (Y, Q, e).
    [6]
    6. Measuring wheel set (1) according to one of the preceding claims, characterized in that the computer (4) is designed depending on the Radscheibenform the Messradsatzes (1) bridge signals (BS) of individual Wheatstonscher measuring bridges (MB) for the solution of N linearly independent equations to group together (MB1, MB2, MB3, MB4).
    [7]
    7. Measuring method for rail vehicles for detecting forces occurring during ferry operation (Y, Q, e), wherein the following method steps are carried out: Measuring measuring signals (MS) with measuring sensors (R0l_a, ROM,...) Which are mounted on at least one wheel disc ( 2, 3, 5, 6, 7) of a measuring wheel set (1) of the rail vehicle at a distance of different measuring radii (I, II, III) are arranged; Connecting strain gauges to Wheatstone bridges (MB), from which bridge signals (BS) are emitted; Solving a number of N linearly independent equations to determine the forces (Y, Q, e) acting on the measuring wheel set (1), characterized in that the measuring signals (MS) are measured by sensors (ROI_a, ROM, ...) which are each arranged on the measuring radii (I, II, III) by 60 ° and by integer divisions / multiples thereof; Rectifying the bridge signals (BS) per measuring radius (I, II, III), the rectified bridge signals GLJ, GL_II, GLJII) being used to solve the equations.
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    同族专利:
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    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
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    法律状态:
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    申请号 | 申请日 | 专利标题
    ATA1676/2010A|AT510443B1|2010-10-07|2010-10-07|MEASURING KIT FOR RAIL VEHICLES|ATA1676/2010A| AT510443B1|2010-10-07|2010-10-07|MEASURING KIT FOR RAIL VEHICLES|
    EP11182115A| EP2439508A1|2010-10-07|2011-09-21|Measuring wheel set for rail vehicles|
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