RESOLVER EXCITATION VOLTAGE AMPLITUDE AUTOMATIC ADJUSTMENT CIRCUIT STRUCTURE, RESOLVER, AND RESOLVER SIGNAL VOLTAGE AMPLITUDE ADJUSTMENT METHOD

摘要

PROBLEM TO BE SOLVED: To provide a resolver excitation voltage amplitude automatic adjustment circuit structure capable of automatically adjusting resolver excitation voltage amplitude so as to be an optimal amplitude to an R/D conversion circuit.;SOLUTION: Resolver excitation voltage amplitude automatic adjustment circuit structure 10 is constituted of: a resolver signal level detection circuit 2 which detects amplitude of angular displacement information (a resolver signal) acquired by a resolver 1; and an excitation voltage generation circuit 3 to which a feedback value to be output from the resolver signal level detection circuit 2 is fed back. As for the resolver signal acquired by the resolver 1, amplitude thereof is detected in the resolver signal level detection circuit 2, the feedback value (detected amplitude) is output from the resolver signal level detection circuit 2 on the basis of detection of the amplitude, and excitation voltage amplitude is automatically adjusted by comparison of the feedback value with a target value by the excitation voltage generation circuit 3.;COPYRIGHT: (C)2015,JPO&INPIT