Patent ID: 9678493
Date: 2017-06-13
CPC Classifications: G03B,G05B,G05D,H02P,H04N

Claim:
1. A position detection apparatus, comprising: a fixed base, a moving part movable relatively with respect to the fixed base, a position detector that detects a position of the moving part relative to the fixed base on the basis of a magnetic flux change to produce first position data, a temperature detector that detects an ambient temperature, a controller configured to: wherein: the position detector detects position data as far as a position area where, within a position range of relative movement of the moving part to the fixed base, the magnetic flux change in association with a change in an amount of the relative movement is nonlinear: where X is the first position data produced out of the position detector, A is a coefficient based on temperature characteristics, B is a value based on the reference voltage of the position detector, C is a value based on a reference temperature, T is the ambient temperature, and Y is the second position data.