Single cycle positioning system

Details Single cycle positioning system Single cycle positioning system

1993-04-26

1995-09-12

Shoop, Jr., William M.

Electricity: motive power systems

Positional servo systems

Frequency- or phase-modulated systems

318127, 318282, B66B 1314

Patent

active

054499909

ABSTRACT:
A single cycle positioning system utilizing a three phase wye connected induction motor (10) includes a three phase inverter (28) and a microprocessor (20) for controlling the inverter to generate three phases of power. Pulse width modulation techniques are utilized and in response to a start signal the frequency of the power to the motor is increased up to a running frequency, and in response to a stop signal the frequency of the power applied to the motor is decreased along with a corresponding reduction of the voltage applied to the motor.

REFERENCES:
patent: 3343398 (1967-09-01), Kerns
patent: 3617837 (1971-11-01), Beck
patent: 4250442 (1981-02-01), McCammon
patent: 4340848 (1982-07-01), Hanagata et al.
patent: 4496891 (1985-01-01), Kobayashi
patent: 4868479 (1989-09-01), Byong-Ho et al.
patent: 5151637 (1992-09-01), Takada et al.
patent: 5250765 (1993-10-01), Mizuno et al.

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