Capacitive position transducer

Details Capacitive position transducer Capacitive position transducer

1986-03-31

1988-04-12

Shoop, Jr., William M.

Electricity: motive power systems

Positional servo systems

With particular 'error-detecting' means

34087037, G05B 106

Patent

active

047376996

ABSTRACT:
A capacitive position transducer for detecting position changes or producing position feedback signals in a servorecorder comprises a rhombic transmitter electrode connected to a voltage source and a plurality of rectangular receiver electrodes insulated from and adjacent to each other. Current flowing through the coupled transmitter and receiver electrodes is rectified by diode circuits and flows through a circuit of serially connected resistors, thereby forming an output voltage signal at an end of the resistor circuit. The linearity of the output voltage signal can be changed by changing the value of the resistors in the resistor circuit. The capacitive position transducer can also provide commutating signals required by brushless linear motor.

REFERENCES:
patent: 3760392 (1973-09-01), Stich
patent: 3845377 (1974-10-01), Shimotori
patent: 3938113 (1976-02-01), Dobson et al.
patent: 4386312 (1983-05-01), Briefer

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