High frequency control system using digital techniques

Details High frequency control system using digital techniques High frequency control system using digital techniques

1981-02-23

1982-07-13

Dobeck, B.

Electricity: motive power systems

Positional servo systems

With particular 'error-detecting' means

318661, G05B 106

Patent

active

043397000

ABSTRACT:
An apparatus for accurately controlling the rotary position of a high speed position control servo system having a servo motor which is fed by a conventional servo amplifier and drive amplifier means with a tachometer feedback to the drive amplifier. Incorporated in the system is a high frequency quadrature phasing network which receives timing signals from the servo amplifier and conditions these signals into a balanced sine cosine function which excites a rotary position transducer that is directly coupled to the motor. The high frequency sine cosine signal produces a reference feedback signal which is the difference between the actual rotor position of the motor and the sine cosine field of the position transducer stator. The error signal is fed back to the servo amplifier and is conditioned through a transformer, pre-amp and filter means and then fed into the servo amplifier means to tract the servo motor.

REFERENCES:
patent: 3340447 (1967-09-01), MacDonald
patent: 3855514 (1974-12-01), Zwitter et al.
patent: 3995267 (1976-11-01), Tripp
patent: 4021714 (1977-05-01), Jones et al.
patent: 4023085 (1977-05-01), Bishop et al.
patent: 4107654 (1978-08-01), Nishijima

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