Motor rotational angular position detecting device, the rotational angle and position detection method

摘要

PPROBLEM TO BE SOLVED: To provide a rotation angle position detector, facilitating construction of a device requiring to secure safety, and preferable for shortening the operation start wait time. PSOLUTION: A resolver device 100 includes a single-pole resolver 30a. A relay device 200 includes a memory 66 storing reference rotation angle information showing an upper limit rotation angle and a lower limit rotation angle of a rotor 12. A digital angle signal value obtained by sampling a single-pole resolver signal is input, a rotation angle position is calculated based on the input digital angle signal value, and when it is determined that the calculated rotation angle position exceeds the upper limit rotation angle according to the reference rotation angle information of the memory 66, or when it is determined that it is below the lower limit rotation angle, it is determined that the rotor 12 invades into a rotation inhibit area, and an abnormality detection signal indicating that the rotation angle position is an abnormal rotation angle is output. PCOPYRIGHT: (C)2009,JPO&INPIT