Temperature compensating circuit for LVDT and control system

Details Temperature compensating circuit for LVDT and control system Temperature compensating circuit for LVDT and control system

1991-05-22

1992-02-11

Ip, Paul

Electricity: motive power systems

Positional servo systems

With particular 'error-detecting' means

318657, 318563, 60261, 60 39141, 60 39161, 236 92R, 36472409, G05B 1300

Patent

active

050878662

ABSTRACT:
A linear variable displacement transducer (LVDT) has a core connected to an actuator such as a torque motor. The outputs of the LVDT are demodulated and subtracted to provide a displacement signal which is compared with a desired displacement to provide closed loop control of the torque motor. The desired displacement is formed by multiplying a demand signal by the sum of the demodulated LVDT outputs so as to provide temperature compensation.

REFERENCES:
patent: 4134065 (1979-01-01), Bauer et al.
patent: 4363098 (1982-12-01), Buus et al.
patent: 4450443 (1984-05-01), Dolland
patent: 4483425 (1984-11-01), Newman
patent: 4599560 (1986-07-01), Sanford et al.
patent: 4807516 (1989-02-01), Takats
patent: 4904921 (1990-02-01), DeVito et al.
patent: 4969662 (1990-11-01), Stuart
patent: 4978865 (1990-12-01), Hartmann et al.
patent: 4989169 (1991-01-01), McCaslin et al.
patent: 5025199 (1991-06-01), Ako

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