Method of testing the operativeness of a control system

Details Method of testing the operativeness of a control system Method of testing the operativeness of a control system

1979-08-07

1982-07-20

Smith, Jerry

Boots, shoes, and leggings

303 92, 364580, 371 3, 371 20, G06F 1130, G06F 1550

Patent

active

043409350

ABSTRACT:
A method of testing the operativeness of a vehicular anti-wheel-lock system of the type whose control device includes a self-monitoring circuit which, when the control device is switched on, initiates a test program and upon detection of system malfunction generates a malfunction signal and also switches off the control device. To test the self-monitoring circuit, the test program is repeatedly initiated by application of artificially generated wheel-rotational-speed signals and operating voltage is applied to the control device with each initiation of the test program. Predetermined faults are simulated, e.g., by the interruption of control lines of the control device, so that upon each implementation of the test program the production of a malfunction signal or the absence of one indicate whether the self-monitoring circuit is operating properly with respect to the fault being simulated. The signals which simulate wheel rpm can be abruptly removed to simulate wheel-lock whereupon the magnitudes of the currents which the control device causes to flow to the electromagnetic valves of the anti-wheel-lock system can be measured.

REFERENCES:
patent: 3907378 (1975-09-01), Leiber
patent: 4106821 (1978-08-01), Brearley
patent: 4158884 (1979-06-01), McKinley et al.
patent: 4192180 (1980-03-01), Gerstenmeier et al.

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