Correction method of position reading value of position detection device

摘要

A method for correcting a position reading value of a position detection device. This position detection apparatus is suitable for detecting the position of a rotary joint of a joint structure, and the position detection apparatus includes a disk having a magnetic ring including a magnetic pole pair and a magnetic sensor array for detecting the magnetic pole pair of the magnetic ring. A magnetic sensor assembly. This method uses a magnetic sensor array to obtain a calibration pole pair position reading for each pole pair of the magnetic ring, and compares the calibration pole pair position reading with the model pole pair position reading to correct the pole pair. Generating a function, averaging the magnetic pole pair correction function of the magnetic ring magnetic pole pair to generate an average magnetic pole pair correction function of the magnetic ring, and using the magnetic sensor array to obtain a position reading including a plurality of magnetic pole pair position readings. Generating a corrected position reading by subtracting an average magnetic pole pair correction function from each magnetic pole pair position reading. [Selection] Figure 11