• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    A switching circuit for preventing the velocity of the rotating wheels from exceeding the velocity of the moving vehicle in an anti-skid vehicular braking system. The switching circuit includes a first threshold device for generating deceleration and acceleration control signals and a second threshold device for generating positive and negative slip control signals. A logic circuit for evaluating the control signals and controlling the brake pressure and switching devices being activated by a positive slip control signal for blocking the first threshold device from generating the deceleration and acceleration signals and which blocking can be eliminated by the presence of a negative slip control signal.
    公开号:SU862817A3
    申请号:SU782659655
    申请日:1978-09-07
    公开日:1981-09-07
    发明作者:Роде Конрад
    申请人:Вабко Вестингхауз Гмбх (Фирма)；
    IPC主号:
    专利说明:

    The invention relates to the automotive industry, in particular to devices that control the brake system. Closest to the invention, the technical solution is a control device for an anti-lock brake system of a vehicle, comprising a wheel dynamic state sensor connected to inputs of cascades of forming threshold values of negative and positive slippage, each of these stages having outputs for issuing a negative and positive signal, connected to the inputs of the logic unit, the outputs of which are connected through amplifiers with the windings of the electromagnetic valves (C, '
    When using the known device in combined hydropneumatic brake systems, there is a risk of deviation of the wheel speed from the speed of the car 45 with strong acceleration of the wheel. Such a deviation usually occurs always with a strong acceleration of the wheels of the car with values greater than 5d. In the event that the speed is different, the growth is large enough to start / start the cascade of the formation of the threshold value of negative acceleration for the formation of control signals, there is a danger of insufficient braking of the car.
    The purpose of the invention is to increase the reliability of braking by eliminating the deviation of the wheel speed from the speed of the car.
    The specified goal is achieved by that. That the device is equipped with a trigger AND two switching cascades, while the trigger trigger input is connected to the positive signal output of the threshold cascade formation stage of the slip, return: the trigger input is connected through the first switching cascade to the negative signal output of the same touchί * * - 20 K dda, and the trigger output connected to one of the inputs of the logical unit and ι : through the second switching cascade with the cascade of the formation of threshold values of acceleration.
    On Fig, 1 shows a block diagram of a control device; in FIG. 2 diagram explaining the operation of the device.
    The block diagram of the device includes a sensor 1 of the dynamic state of the car’s forest, the signals of which are supplied by stages 2 and 3 of the formation of threshold values of negative and positive acceleration, in other words, deceleration (~ b> r acceleration (+ b) and negative and positive slippage ( - Д η + λ)> processed - in the logic block 4, the output signals of which through the amplifiers 5 control the magnetic valves 6. The trigger 7 is connected to the highway from the stage 3 for the control signal 4-A to the logic block 4.
    + V signals are fed to the trigger input (S) of trigger 7 e, through the output of which logic block 4 is controlled, and, in addition, the cascading cascade 8 is the blocking + b and - b-signals cas-: to hell 2.
    Through cascade 3, the switching cascade 9 is controlled, which is connected to the return input (R) of trigger 7 and, when the reference speed and wheel speed are equal, the reset trigger.
    The scheme does not care. 1 works as follows.
    For a more detailed explanation of the pa-25 bots of the circuit in FIG. 2. A diagram of the change in brake pressure P and wheel speed V over time t is presented, while the time periods, · t ^ ·, t, are marked on the diagram. } , t,., zd t 6 ,, fc .
    In the event that an adjustable occurs. braking, the speed of the wheel decreases, the frequency of the signals of the sensor 1 decreases. The cascade responds to this lower level. 2 and at time t, the logic unit 4 is supplied with an L signal. The latter controls the valves 6 so that the brakes are released.
    When a ~ I) signal occurs, the reference speed 'is triggered by time 40 (Fig. 2). As soon as after a new braking of the car’s wheel, from time t A, cascade 3 gives a + D signal and a wheel speed of 45 s. It exceeds the set threshold value * Λ by the reference speed V R & r trigger 7, the output signal of which causes cascade 8 locking the control signals + b and · - b formed in • cascade 2.
    How. only the control signal + λ arises. the braking pressure __. singing> is quickly induced on the duration of this signal. The control signal + b in the normal case drops off at time t fj - and the control signal - b in the normal case appears after the point of change of the wheel speed to the moment, time b th . 60
    Thanks to the described scheme, the control signal 4b is locked already at the moment of time and the control signal b is recorded to the point B of the intersection Utsa4th v R6-f * until the moment 65 of time c, at which both speeds are equal, 'After that trigger 7 returns to the original state and blocking of signals + b stops.
    The described circuit provides the locking of the control signals - b to the point B of the intersection of speeds and v g g £> and the reference speed does not work at the point 'C, i.e. not at time t g , in which in the normal case a control signal - b would occur, but at a later, late time (point D).
    As a result of this, a longer pressure guidance is ensured, namely, until the disappearance of the + Λ-signal instead of a decrease in pressure at an earlier occurrence of the regulatory signal - b. Due to this, premature prevention is prevented. Variable start of the reference speed formation circuit and, at the same time, the speed deviation from the vehicle speed is too strong
    The described device reliably eliminates the danger of insufficient braking,
    权利要求:
    Claims (1)
    [1]
    scaffoldings of a car whose signals are given by cascades of 2 and 3 forms of the threshold values of negative and positive for the first accelerator in slowing (, b), accelerating (- (- b) and negative and positive slippage (D p –f – D,) processing - in logic unit 4, the output signals of which through the amplifiers 5 control the magnetics of the panels B. To the trunk from cascade 3 for the regulating signal -i I to the logic unit 4 is turned on. The trigger 7, + X signals are fed to the trigger input ( S) trigger 7. Through the outputs of which is activated ohic block 4 and, apart from xoroj t (O1FGuishing cascade 8, locking -f b and b ka signals to hell 2; the reference speed and the speed of the wheel dropping: the trigger. The scheme according to r. g 1 works as follows: “For more detailed operation of cxeMij in Fig. 2, the diagram shows the brake pressure P and the wheel speed V over time t, the diagram is marked temporary; segments t, t, t.j, t, t /, Ch. .t7, In the second case / if a controlled deceleration occurs, the wheel speed Vjj decreases, the frequency of the signals of sensor 1 decreases,. Ma this slide reahiruet cascade 2 and in nomen.t time logical bl-ok 4 gives the change to t. with b-signaling "After; 4th controls the valves so that the dispense is released. When the B-signal is realized, the K 1 moment t j is scooping up the speed Vf, .g. (Fig. 2), As AOLKO, after the new t of the reloading of the wheel of the C3 TOivsoSH.nH, from the time of Kaske. G4 is set to a predetermined threshold value of L, the reference speed is triggered by a thriller 7, the output of which triggers cascade 8, which locks the forming lines in cascade 2 of the adjusting signals + b and b, b, k. only a regulating signal 4-X arises. The duration of this signal is rapidly applied to brake pressure P, the regulating signal + b in the Hopr.saJi.bHOM case drops at the time tY, - and the regulating signal - b S the normal case appears after the change point wheel speed to the moment. time t. Due to the described scheme, adjusting and 1} the 5th signal + b is already locked and the moment of time .. and t and the control signal b is recorded to the point B and Vjj, i.e., to the moment of change with After that, the trigger 7 returns to the initial state — and the locking signals b stop; not at the moment of time tg, in which, in the normal case, the regulating signal would appear - b, but at a later time point (point D). . As a consequence, a longer pressure build-up is provided, and it is until the 4-I signal disappears instead of decreasing the pressure with an earlier occurrence. regulating signal - b. Due to this, prematurely is prevented. launching the reference speed formation scheme and, at the same time, too much speed deviation of the vehicle asZ speed. The described device reliably eliminates orsacHocTb. Inadequate braking, Formula of the Invention, Control is 1; 1; its device for countering an automobile braking system; VipoBochny, containing a wheel CONDITION sensor, connected to the inputs of the formation stages. The negative and positive acceleration and negative and positive slippage thresholds. In this case, each of these stages has outputs for providing a negative signal that is negative to the inputs of the logic unit, the outputs of which are connected through amplifiers with coils of electromagnetic valves, distinguish & 8 so that, in order to increase the reliability of braking and by eliminating the deviation of the wheel speed from the speed .il, it is provided with When the trigger trigger input is connected to the output of the positive signal of the cascade, threshold values for slippage, the return trigger code is connected to the negative signal of the same cascade, and the trigger output is connected to one of the inputs of the trigger block and through the second switching cascade with the cascade of formation of threshold values of acceleration. Sources of information taken into account in the examination 1. Application of Germany 2050327, cl. 63 sec., 53/07, 1972;
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    同族专利:
    公开号 | 公开日
    IT1203199B|1989-02-15|
    JPS6315179B2|1988-04-04|
    YU212578A|1982-06-30|
    DE2740419C2|1982-05-19|
    SE7809260L|1979-03-09|
    US4239295A|1980-12-16|
    DE2740419A1|1979-03-22|
    SE439468B|1985-06-17|
    FR2402558A1|1979-04-06|
    FR2402558B1|1983-07-01|
    GB2005781B|1982-01-20|
    IT7869072D0|1978-09-07|
    JPS5440975A|1979-03-31|
    GB2005781A|1979-04-25|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    DE1916518C2|1968-09-23|1986-12-04|Kelsey-Hayes Co., 48174 Romulus, Mich.|Antilocking control circuit for vehicle brakes - blocks pressure release signal when wheel rotation is below variable threshold|
    DE2050327A1|1970-10-14|1972-04-20|Westinghouse Bremsen- Und Apparatebau Gmbh, 3000 Hannover|Anti-skid device for the vehicle wheels of a vehicle, in particular a road vehicle|
    JPS5023113B1|1970-11-16|1975-08-05|
    DE2063944C3|1970-12-28|1982-03-11|Teldix Gmbh, 6900 Heidelberg|Circuit arrangement of an anti-lock vehicle brake system|
    DE2209955C2|1972-03-02|1986-12-11|Robert Bosch Gmbh, 7000 Stuttgart|Control signal circuitry for antilocking vehicle brakes - has evaluating logic switching storage member upon appearance of delay signals indicating tendency to blocking|
    AR205087A1|1973-01-26|1976-04-05|Eaton Corp|BRAKE CONTROL DEVICE FOR A VEHICLE|
    FR2248696A5|1973-09-14|1975-05-16|Dba|
    US3948570A|1974-02-08|1976-04-06|Nissan Motor Co., Ltd.|Method and system for controlling the braking pressure in response to the rate of variation in wheel speed|
    DE2414480A1|1974-03-26|1975-10-23|Bosch Gmbh Robert|PROCEDURES AND DEVICE FOR STARTING SLIP CONTROL|
    DE2518190A1|1975-04-24|1976-11-04|Teldix Gmbh|ANTI-LOCK CONTROL SYSTEM FOR VEHICLES|
    DE2553000C2|1975-11-26|1989-09-07|Robert Bosch Gmbh, 7000 Stuttgart, De|
    DE2558712C2|1975-12-24|1987-04-16|Robert Bosch Gmbh, 7000 Stuttgart, De|JPS60113759A|1983-11-25|1985-06-20|Nissan Motor Co Ltd|Anti-skid control device|
    DE3521960C2|1985-06-20|1992-11-05|Alfred Teves Gmbh, 6000 Frankfurt, De|
    JPH0729598B2|1985-12-27|1995-04-05|曙ブレーキ工業株式会社|Anti-skidding control method|
    DE3733801A1|1987-09-21|1989-03-30|Wabco Westinghouse Fahrzeug|ANTI-BLOCKING SYSTEM FOR VEHICLES|
    JPH01248903A|1988-03-29|1989-10-04|Daifuku Co Ltd|Carrying facility employing linear motor|
    JPH01283051A|1988-05-07|1989-11-14|Daifuku Co Ltd|Linear motor-driven carrier apparatus|
    DE3819511A1|1988-06-08|1989-12-14|Lucas Ind Plc|METHOD FOR REGULATING THE BRAKE PRESSURE IN A BLOCK-PROTECTED VEHICLE BRAKE SYSTEM|
    WO1999001322A2|1997-07-01|1999-01-14|Kelsey-Hayes Company|Wheel spin-and-brake algorithm for a rear wheel anti-lock brake system|
    US7543670B2|2005-10-31|2009-06-09|Gm Global Technology Operations, Inc.|Wheel slip control system|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    DE19772740419|DE2740419C2|1977-09-08|1977-09-08|Circuit arrangement to prevent the wheel speed from overshooting the vehicle speed in vehicles with anti-lock braking systems|
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