Abstract：The auto—voltage regulator for the aircraft variable frequency (VF)power system is studied． Some voltage—feedback detection methods are discussed．A RM S detection circuit based on AD536A is presented and the principle of the circuit is analyzed．The output response speed conflicts with the out— put voltage ripple of the circuit．To solve this problem ，a filter circuit composed by the m inus circuit is presented for filtering the voltage ripple without the response delay．A circuit for eliminating noise com— posed by the diode is presented and verified by experiments． Using a M atlab software，the input and output signals of the RM S detection circuit are identified．The transfer function of the circuit is obtained and used in the simulation for the aircraft AC power system．The closed 1oop experimental results indi— cate that the system output steady and dynam ic performance with the variable frequency and the genera— tor voltage distortion is improved by using the RM S det

有效值调压.pdf

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