| 摘要 |
PURPOSE:To make a response at a high speed by converting a pulse with width proportional to the rotational angle theta of a resolver into an analog signal, and feeding it back to a matching circuit through an amplifier, variable frequency oscillator, reversible counter, and analog converter. CONSTITUTION:The pulse proportional to the rotational angle theta of the resolver 5 is outputted from a comparator 9 and converted through a filter 11 into an analog value, which is inputted to the matching circuit 12 to obtain its deviation from the output of a digital/analog converter 16. This deviation is amplified by the amplifier 13 and the variable frequency oscillator 14 is oscillated with its output to output an up or down pulse according to the output sign of the amplifier 13. Further, the pulse is counted by the reversible counter 15 to obtain a digital value proportional to the rotational angle theta, and the digital value is fed back to the matching circuit through the converter 16. |
