Device for diagnosing trouble in a control circuit for electroma

Details Device for diagnosing trouble in a control circuit for electroma Device for diagnosing trouble in a control circuit for electroma

1979-05-03

1981-06-02

Miller, J. D.

Fluid-pressure and analogous brake systems

Pipeless valves

371 25, B60T 1722

Patent

active

042708095

ABSTRACT:
A trouble diagnosing device for diagnosing a fault in a control circuit for controlling a plurality of electromagnetic actuators in an operating system such as a brake system. The control circuit receives a plurality of mutually independent input signals for individually controlling the operations of the electromagnetic actuators. The trouble diagnosing device includes an analog signal oscillator for feeding a trouble diagnosing analog signal to the control circuit and a trouble diagnosing circuit receiving the output signals from the control circuit for producing output signals indicating fault in the control circuit when the output signals of the control circuit include an abnormal signal.

REFERENCES:
patent: 3750101 (1973-07-01), Granlund
patent: 4106820 (1978-08-01), Ruhnau et al.
patent: 4106821 (1978-08-01), Brearley

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