RESOLVER SIGNAL PROCESSING DEVICE

• Main Author: MORI SHIGENORI
• Format: Patent
• Language: English; Japanese
• Published: 18.08.2016
• Subjects: ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVEREDIN A SINGLE OTHER SUBCLASS; CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORSOR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRICITY; GENERATION; MEASURING; MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR; PHYSICS; TARIFF METERING APPARATUS; TESTING

PROBLEM TO BE SOLVED: To provide a resolver signal processing device with which it is possible to remove an error riding on an angle signal that is attributable to the basic characteristic of a resolver digital converter (RDC).SOLUTION: A resolver signal processing device comprises: an initial electric angle calculation unit 13 for finding an initial electric angle from a first output signal and a second output signal outputted from a resolver at power-on; a first arithmetic unit 12 for finding the result of arithmetic using an inverse tangent function on the basis of the first output signal and second output signal for each arithmetic cycle; a transition determination unit 15 for determining whether or not the electric angle has transitioned between a first angle range and a second angle range; and an electric angle calculation unit 16 for finding an electric angle on the basis of information outputted by the initial electric angle calculation unit 13, the first arithmetic unit 12, and the transition determination unit 15.SELECTED DRAWING: Figure 1 【課題】ＲＤＣの基本特性に起因する角度信号に乗った誤差を除去することが可能なレゾルバ信号処理装置を提供する。【解決手段】レゾルバ信号処理装置は、電源投入時にレゾルバから出力される第１出力信号及び第２出力信号から初期電気角を求める初期電気角算出部１３と、演算周期ごとに第１出力信号及び第２出力信号に基づいて逆正接関数を用いた演算結果を求める第１演算部１２と、電気角が第１角度範囲と第２角度範囲との間で遷移したか否かを判断する遷移判断部１５と、初期電気角算出部１３、第１演算部１２、及び遷移判断部１５が出力する情報に基づいて電気角を求める電気角算出部１６と、を備える。【選択図】図１