Microprocessor-controlled motor drive control system

Electricity: motive power systems – Positional servo systems – With compensating features

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Details

318568, 318603, G05D 23275

Patent

active

043684122

ABSTRACT:
A microprocessor-controlled drive control system for a motor includes a driver circuit for the motor, a signal input unit for receiving an input command signal representing a desired extent of angular displacement of the motor, a microcomputer having an input/output interface connected between the signal input unit and the driver circuit and a central processing unit (CPU) for producing a control command signal in accordance with the input command signal and applying the control command signal to the driver circuit, thereby providing from the latter a drive signal for the motor in accordance with the control command signal, an encoder for sensing an angular displacement of the motor brought about by the drive signal and producing a succession of pulses representing the angular displacement being sensed, logic-circuit means connected between the encoder and the interface for applying to the central processing unit a feed-back signal at least in part derived from the encoder output pulses to modify the control command signal and consequentially the drive signal, and an interrupt unit associated with the microcomputer for intermittently providing an interrupt signal to the central processing unit, thereby permitting the latter to execute the modification of the control command signal.

REFERENCES:
patent: 3725654 (1973-04-01), Tripp
patent: 3917930 (1975-11-01), Davey et al.
patent: 4025838 (1977-05-01), Watanabe
patent: 4140953 (1979-02-01), Dunne
patent: 4153863 (1979-05-01), Schachte et al.
patent: 4206393 (1980-06-01), Chiba

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