Drive controlled by a sequence of pulses

Details Drive controlled by a sequence of pulses Drive controlled by a sequence of pulses

1986-08-22

1988-01-26

Shoop, Jr., William M.

Electricity: motive power systems

Positional servo systems

With particular motor control system responsive to the...

318696, G05B 1940

Patent

active

047218967

ABSTRACT:
The invention relates to drive controlled by a sequence of pulses and which in place of a stepper motor with its associated circuit makes use of a continuous displacement motor, such as a DC motor, which may be directly connected with a process computer. The motor is coupled with an incrementally operating displacement sensor which for each displacement increment to be caused by a control pulse, generates precisely one sensed pulse. The sensed pulses and the control pulses are fed to an up-down counter via an electronic separating filter. The output signal of the counter and that of a periodically upwardly counting ancilllary counter is used for addressing a ROM whose output bit pattern controls the power switching stages of the DC motor or other continuous drive.

REFERENCES:
patent: 4214193 (1980-07-01), Mason
patent: 4258301 (1981-03-01), Kawa
patent: 4368412 (1983-01-01), Inoue
patent: 4383245 (1983-05-01), Cooley et al.
patent: 4510266 (1985-04-01), Eertink

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