Temperature compensator of torque sensor

Details Temperature compensator of torque sensor Temperature compensator of torque sensor

2005-10-25

2005-10-25

Noori, Max (Department: 2855)

Measuring and testing

Dynamometers

Responsive to torque

C073S862332

Reexamination Certificate

active

06957589

ABSTRACT:
The present invention provides a temperature compensator for a torque sensor, including a pair of coils, which are connected to an AC power supply circuit via transistors and in which inductances change in opposite directions depending on torque, and a torque detecting means which obtains a voltage difference between a first voltage and a second voltage output via smoothing circuits based on changes in inductance of each pair of coils, and outputs as a torque detection voltage, the temperature compensator having a correcting voltage extracting means for extracting a voltage between terminals of a transistor in the AC power supply circuit as a temperature correcting voltage, and a correcting means for correcting the torque detection voltage based on a temperature correcting voltage Vs extracted by the correcting voltage extracting means.

REFERENCES:
patent: 4827891 (1989-05-01), Miura et al.
patent: 6622576 (2003-09-01), Nakano et al.
patent: 148128 (2002-05-01), None

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