| 摘要 |
PURPOSE:To remove delay of detection by selecting one period of an exciting signal of a resolver and sample-holding the change of the phase of a resolver output signal to take out the change as the revolving speed. CONSTITUTION:At the detection of the change of the phase of a resolver output signal which is generated by resolution, one period of a resolver exciting signal A is found on the basis of a counted value 7 of reference frequency signals B, an integrator 8 is actuated before and after the one period respectively and the 1st and 2nd lamp-like signals are generated and sample-held at the zerocross point of the corresponding resolver output signal C to obtain the phase change of one period of the exciting signal A. |
