Motor driving circuit for motor actuator

Details Motor driving circuit for motor actuator Motor driving circuit for motor actuator

1984-12-31

1986-05-27

Dobeck, B.

Electricity: motive power systems

Positional servo systems

With particular 'error-detecting' means

318434, 318436, G05B 106

Patent

active

045917736

ABSTRACT:
A motor driving circuit apparatus for use in a motor actuator for actuating, for example, a valve between two limit positions, having a control means for inputting a driving control signal for the motor, a sensor adapted to output a signal corresponding to the position of the actuator, and a comparator section adapted to compare the input through the control means and the output from the sensor, the comparator being adapted to produce an output signal in accordance with which the motor is driven and controlled. The motor driving circuit apparatus comprises a differentiation circuit for differentiating the output of the comparator section and a timer section adapted to be controlled by the output from the differentiation circuit, wherein the driving control of the motor by the output of the comparator section is conducted only within a predetermined period of time in accordance with the output from the timer section.

REFERENCES:
patent: 3927359 (1975-12-01), Chen
patent: 4366422 (1982-12-01), Rhodes
patent: 4379986 (1983-04-01), Baxter et al.
patent: 4412162 (1983-10-01), Kitamura
patent: 4504881 (1985-03-01), Wada et al.

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