Electricity: motive power systems – Positional servo systems – With stabilizing features
Patent
1982-10-13
1985-03-19
Witkowski, Stanley J.
Electricity: motive power systems
Positional servo systems
With stabilizing features
318678, 318681, G05B 501
Patent
active
045062030
ABSTRACT:
A circuit for controlling the position of a driven member is disclosed which includes a control circuit for controlling the application of electrical power to a motor and a circuit element operable for generating position error signals corresponding to the position of the load which may in one embodiment constitute a rotor element of the motor. A comparator section is provided for comparing the position error signals with position reference signals and for generating control signals to effect rotation of the load in a desired direction. In one embodiment, the error signal is generated by a feedback loop including a potentiometer having a movable element coupled to the load or motor rotor, wherein the voltage magnitude of the error signal is varied in accordance with the rotational position of the load or rotor element. In a preferred embodiment, the comparator section includes first and second comparators respectively responsive to position deviations of the rotor in first and second rotational directions.
REFERENCES:
patent: 3736486 (1973-05-01), Gould
Bergmann Saul M.
Cate James M.
LTV Aerospace and Defense Company
Sadacca Stephen S.
Witkowski Stanley J.
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