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公开(公告)号：US3899916A
公开(公告)日：1975-08-19
申请号：US38253873
申请日：1973-07-25
发明人： CLINE EDWIN LEE
CPC分类号： G01L5/225
摘要： A method and apparatus for analyzing the performance of wheeled, land vehicle brake systems wherein means are provided for driving the vehicle wheels at a predetermined speed and the operator or computer controlled brake actuator selectively applies the brakes in a series of simple successive steps comprising the test sequence. The pedal pressure, or other actuating force, the brake effort exerted by each wheel, and the imbalance between the braking effort of opposite wheels is measured and recorded on a strip chart or fed to a computer, to determine if the measured values fall outside of a predetermined range of values representing acceptable deviations from standard values. Any deviation of the brake effort from the acceptable values, or excessive imbalance between opposite wheels at any point in the test sequence, may be used as a basis for diagnosing and identifying a specific brake malfunction. The system can be enlarged to simultaneously test the brakes on all wheels of a land vehicle.
摘要翻译： 一种用于分析轮式陆上车辆制动系统的性能的方法和装置，其中提供用于以预定速度驱动车轮的装置，并且操作者或计算机控制的制动器致动器以一系列简单的连续步骤选择性地施加制动器，包括测试 序列。 踏板压力或其他致动力，由每个车轮施加的制动力以及相对车轮的制动力之间的不平衡被测量并记录在条形图上或馈送到计算机，以确定测量值是否落在 表示与标准值的可接受的偏差的预定范围的值。 制动器工作量与可接受值的任何偏差，或者测试顺序中任何一点的相对车轮之间的过度不平衡可用作诊断和识别特定制动器故障的基础。 该系统可以扩大，同时测试陆上车辆所有车轮上的制动。
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公开(公告)号：US3877299A
公开(公告)日：1975-04-15
申请号：US38238573
申请日：1973-07-25
CPC分类号： B60T7/00 , B60T17/223
摘要： A removable brake pedal actuator for applying a force to conventional vehicle brake pedals in accordance with a control signal for brake testing purposes is described. The actuator includes a frame which rests on the vehicle floor board and is held in place by an operator''s foot. A contact pad is provided for engagement with the brake pedal. A force transferring or coupling mechanism in the form of a pneumatically operated piston cylinder assembly is connected between the frame and pedal contact pad to provide a pedal force in response to the control signal. A contact sensor is mounted on the contact pad to provide an indication that the contact pad is in actual contact with the brake pedal. A pressure sensor is also carried by the contact pad for engagement with the brake pedal to provide a signal representative of the force applied to the brake pedal. A floor clearance probe or transducer is also provided on the actuator for providing an indication that the distance between the brake pedal and vehicle floor has decreased below a minimum acceptable value. The piston can be connected to a position indicating transducer such as a potentiometer for permitting the travel of the brake pedal to be ascertained during braking tests. The actuator may be a part of a servo control loop in which feedback signals representative of a desired braking effort or brake pedal pressure are used to control the actuator.
摘要翻译： 描述了用于根据用于制动测试目的的控制信号向常规车辆制动踏板施加力的可拆卸制动踏板致动器。 致动器包括搁置在车辆底板上并由操作者的脚保持在适当位置的框架。 提供接触垫以与制动踏板接合。 以气动操作的活塞气缸组件形式的力传递或联接机构连接在框架和踏板接触垫之间，以响应控制信号提供踏板力。
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