Patent ID: 9581633
Date: 2017-02-28
CPC Classifications: B62D,G01B,G01D,G01L,G01M

Claim:
1. A relative angle detection apparatus comprising: a first output unit that outputs a signal that corresponds to a relative rotation angle between two rotation shafts that are coaxially disposed; a first amplifier circuit that is obtained by combining together circuits operating reversely to each other, and amplifies the output signal of the first output unit; a second output unit that outputs a signal that corresponds to the relative rotation angle, and has characteristics contradictory to those of the output signal of the first output unit; a second amplifier circuit that is obtained by combining together circuits operating reversely to each other, and amplifies the output signal of the second output unit; an abnormality detection unit that detects an abnormality of a first signal or a second signal based on the first signal output from the first amplifier circuit and the second signal output from the second amplifier circuit; a first resistor that is provided between the first amplifier circuit and a power supply terminal which receives a power supply voltage, or between the first amplifier circuit and a reference terminal which receives a reference voltage; and a second resistor that is provided between the second amplifier circuit and the power supply terminal receiving a power supply voltage, or between the second amplifier circuit and the reference terminal, and at a location that corresponds to the location in which the first resistor is provided, wherein each of the first amplifier circuit and the second amplifier circuit is a push-pull circuit; the first resistor is not disposed in a signal line that transmits an output signal of the first output unit, and the second resistor is not disposed in a signal line that transmits an output signal of the second output unit.