公开(公告)号：US3852616A

公开(公告)日：1974-12-03

申请号：US33433073

申请日：1973-02-21

Applicant: BENDIX CORP

Inventor： KRAWCZAK G ,  CARP R ,  WEISSLER H

IPC: B60T8/00 ,  B60T8/172 ,  B60T8/174 ,  B60T8/66 ,  B60T8/72 ,  H03K17/28 ,  H03K17/00

CPC classification number: B60T8/172

Abstract: A period timer for use in an adaptive braking system determines when wheel speed falls below a reference speed and when wheel speed subsequently exceeds a second, higher, reference speed. A capacitor is charged to a voltage inversely proportional to wheel speed. If the capacitor voltage exceeds a reference voltage proportional to the reference speed a one-shot generates an output which is fed back to lower the reference voltage.

Abstract translation: 用于自适应制动系统的周期定时器确定车轮速度是否低于参考速度，并且当车轮速度随后超过第二个较高参考速度时。 电容器被充电到与车轮速度成反比的电压。 如果电容器电压超过与参考速度成比例的参考电压，则单次产生反馈的输出以降低参考电压。

公开(公告)号：US3803425A

公开(公告)日：1974-04-09

申请号：US35687073

申请日：1973-05-03

Applicant: BENDIX CORP

Inventor： CARP R

IPC: B60T8/82 ,  B60T8/88 ,  H02H7/20

CPC classification number: B60T8/885 ,  B60T2270/416

Abstract: A circuit which provides a failure indication when one of two speed sensors in an adaptive braking system fails includes a pair of comparators for comparing the outputs of each sensor individually against a predetermined reference. When the output from one of the sensors exceeds its reference, it generates a feedback signal to change the reference of the other comparator to a new value. A failure is indicated if one sensor exceeds the predetermined reference and the second sensor output fails to exceed the new value of the reference.

公开(公告)号：US3802749A

公开(公告)日：1974-04-09

申请号：US35729473

申请日：1973-05-04

Applicant: BENDIX CORP

Inventor： WEISSLER H ,  KASSELMANN J ,  CARP R ,  WEBER R

IPC: B60T8/66 ,  B60T8/174 ,  B60T8/1763 ,  B60T8/82 ,  B60T8/84 ,  B60T8/08

CPC classification number: B60T8/17633

Abstract: An adaptive braking system in which the speed of each wheel on an axle is independently sensed but the braking pressure of both axle wheels is controlled during adaptive braking by a single brake pressure modulator. Performance information from the wheel having the higher speed is used to determine when brake pressure should be reduced. Performance information from the wheel having the lower speed is used to determine when the brake pressure should be subsequently increased. If the ratio of the speed of the low speed wheel with respect to the speed of the high speed wheel drops below a predetermined level, the wheel having the higher speed controls adaptive braking.

Abstract translation: 一种自适应制动系统，其中独立地感测到车轴上的每个车轮的速度，但是通过单个制动压力调节器在自适应制动期间控制两个车轮的制动压力。 使用具有较高速度的车轮的性能信息用于确定何时应减少制动压力。 来自具有较低速度的车轮的性能信息用于确定何时应该随后增加制动压力。 如果低速轮相对于高速轮的速度的比率低于预定水平，则具有较高速度的车轮控制自适应制动。

公开(公告)号：US3804470A

公开(公告)日：1974-04-16

申请号：US27700172

申请日：1972-08-01

Applicant: BENDIX CORP

Inventor： SCHAFER T ,  SLAVIN M ,  CARP R

IPC: B60T8/172 ,  B60T8/1761 ,  B60T8/1763 ,  B60T8/66 ,  B60T8/08

CPC classification number: B60T8/17613 ,  B60T8/17633

Abstract: An adaptive braking system for wheeled vehicles, such as automobiles, uses signals proportional to wheel speed to control braking during incipient wheel skid conditions. A capacitor whose decay rate is controlled is used to memorize a signal correlated to wheel speed. Generally, the memorized signal will be maintained at a fixed offset at a value less than an instantaneous wheel speed signal. After braking pressure is applied the instantaneous wheel speed may drop more rapidly than the memory capacitor can follow. If the instantaneous wheel speed signal drops through the memorized signal, braking pressure is attenuated. The memorized signal will now track the instantaneous wheel speed signal downward maintaining a further fixed offset where the memorized signal is greater than the instantaneous wheel speed signal. In response to the attenuated braking pressure wheel speed will increase while the memorized signal will continue to decay at its predetermined schedule so that eventually the instantaneous wheel speed signal will exceed the memorized signal at which time braking pressure will be restored. With the instantaneous speed signal now greater than the memorized signal, the memorized signal will track the instantaneous speed signal at the first mentioned offset.

Abstract translation: 用于诸如汽车的轮式车辆的自适应制动系统使用与车轮速度成比例的信号来控制在初始车轮滑行条件下的制动。 衰减速率被控制的电容器用于存储与车轮速度相关的信号。 通常，存储的信号将被保持在小于瞬时轮速信号的值的固定偏移处。 在施加制动压力之后，瞬时轮速度可能比存储电容器可以跟随的速度下降得更快。 如果瞬时轮速信号通过存储信号下降，则制动压力衰减。 存储的信号现在将跟踪瞬时轮速信号向下，保持另外的固定偏移，其中存储的信号大于瞬时轮速信号。 响应于衰减的制动压力，车轮速度将增加，同时存储的信号将以其预定的时间表继续衰减，使得最终的瞬时车轮速度信号将超过存储的信号，此时制动压力将被恢复。 由于瞬时速度信号现在大于存储信号，所存储的信号将跟踪第一个所述偏移处的瞬时速度信号。

公开(公告)号：US3797894A

公开(公告)日：1974-03-19

申请号：US3797894D

申请日：1973-01-24

Applicant: BENDIX CORP

Inventor： CARP R

IPC: G01R19/04 ,  B60T8/172 ,  B60T8/00

CPC classification number: B60T8/172 ,  Y10S303/05

Abstract: A peak detector for use in an adaptive braking system includes a current source which supplies current to a memory capacitor to maintain the voltage thereacross equal to an input signal so long as the input signal remains above a first threshold. While the input signal is decreasing below the first threshold, current is drawn from the memory capacitor so that the voltage thereacross continues to track the input voltage. However, when the input signal subsequently begins to increase below the first threshold, diodes prevent current from entering or being drawn from the memory capacitor so that the voltage across the capacitor remains constant and equal to the negative peak value of the input signal. The voltage across the capacitor is applied as one input to a comparator while only a portion of the input signal voltage is applied as the second input to the comparator. Accordingly, when the input signal voltage increases by an amount related to the above mentioned portion the comparator generates an output.

Abstract translation: 用于自适应制动系统的峰值检测器包括电流源，其将电流提供给存储器电容器，以便在输入信号保持高于第一阈值时将其保持在与输入信号相等的电压。 当输入信号降低到低于第一阈值时，从存储电容器中抽出电流，使得其上的电压继续跟踪输入电压。 然而，当输入信号随后开始增加到低于第一阈值时，二极管防止电流进入或从存储电容器中抽出，使得电容两端的电压保持恒定并等于输入信号的负峰值。 电容器两端的电压作为一个输入端施加到比较器，只有一部分输入信号电压作为比较器的第二个输入。 因此，当输入信号电压增加与上述部分相关的量时，比较器产生输出。

公开(公告)号：US3754796A

公开(公告)日：1973-08-28

申请号：US3754796D

申请日：1971-08-19

Applicant: BENDIX CORP

Inventor： SLAVIN M ,  CARP R

IPC: B60T8/1763 ,  B60T8/1764 ,  B60T8/42 ,  B60T8/12

CPC classification number: B60T8/425 ,  B60T8/17633 ,  B60T8/1764

Abstract: A vacuum actuated hydraulic pressure modulator for use in an adaptive braking system for automobiles, trucks and the like, which is interposed in the vehicle hydraulic brake line between the master cylinder and the wheel cylinders to be controlled in response to error signals generated in an adaptive braking system control channel includes a diaphragm and a cooperating displacement rod within the modulator body which are positioned in accordance with the volumetric rate of air admitted to one side of the diaphragm by a solenoid valve which opens in response to an error signal generated by the adaptive braking system control channel when the vehicle wheels attain a certain dynamic condition. The displacement rod cooperates with a ball valve to normally allow free communication between the master cylinder and wheel cylinder; however, when the air is admitted through the solenoid valve in response to the error signal the displacement rod is displaced so as to isolate the wheel cylinders from the master cylinder and additionally to rapidly attenuate the hydraulic pressure at the wheel cylinders. In response to the decreasing brake pressure at the wheel cylinders, the wheel begins to accelerate to its vehicle speed. At another dynamic wheel condition, the error signal is extinguished thereby closing the solenoid valve. The modulated diaphragm and displacement rod are now repositioned so as to slowly increase the braking pressure, the rate of pressure increase being determined by the amount of air leakage across the modulator diaphragm. If wheel acceleration, in spite of the increasing brake pressure, increases to a third reference level, a modulator bypass valve is opened in response to a second control channel error signal so as to pneumatically shunt the aforementioned diaphragm causing the displacement rod and diaphragm to be repositioned more rapidly, thus increasing the brake pressure at a more rapid rate, which rate is determined by the size of the bypass valve.

公开(公告)号：US3727517A

公开(公告)日：1973-04-17

申请号：US3727517D

申请日：1971-03-03

Applicant: BENDIX CORP

Inventor： SLAVIN M ,  EMERY R ,  CARP R ,  ANG L

IPC: B60K31/10 ,  F02D41/30 ,  G01P1/10 ,  F15B9/03 ,  F15B9/09

CPC classification number: B60K31/105 ,  F02D41/30 ,  G01P1/103

Abstract: An automobile speed control system of the vacuum actuated type having a unitized housing embodying actuator, modulator, electronic components and inductive position feedback means. Electrical connections into the hermetically sealed expansible actuator, and noise caused by feedback potentiometer wear are eliminated. Valve means within the actuator are operated by magnetic forces generated externally to the actuator, thus eliminating electrical connections. The feedback means comprise a metallic body sealed in the actuator and movable therewith and an inductor external to the housing arranged so that its inductance will vary according to the position of the metallic body.

Abstract translation: 真空致动型的汽车速度控制系统具有体现致动器，调制器，电子部件和感应位置反馈装置的组合壳体。 消除了电气连接到气密密封的可扩展致动器中，以及由反馈电位器磨损引起的噪声。 致动器内的阀装置由致动器外部产生的磁力操作，从而消除电气连接。 反馈装置包括密封在致动器中并与其一起移动的金属体，并且壳体外部的电感器布置成使得其电感将根据金属体的位置而变化。