| 摘要 |
The present invention provides a neutral point voltage adjuster of a torque sensor which comprises: a pair of coils having inductances changing mutually in a reverse direction in accordance with a torque; and a differential amplifier means inputting first and second sub-voltages based on each inductance change of both coils, and amplifying a difference between the first and second sub-voltages so as to output it as a main voltage, and which uses a neutral point where no torque is inputted as a boundary between right and left directions, and detects each torsional torque in the right and left direction, comprising: a neutral point voltage setter for displacing a main voltage of an output from the differential amplifier on the basis of an adjusting signal so as to set a neutral point voltage; a memory for storing a neutral point voltage setting state by the neutral point voltage setter; and a neutral point voltage adjuster for storing a neutral point voltage used as a reference of a main voltage, and inputting the main voltage, and further, outputting the adjusting signal to the neutral point voltage setter so that a difference between the neutral paint voltage read from the main voltage and the reference neutral point voltage is reduced.
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