JPS6329397U

JPS6329397U -

Info

Publication number: JPS6329397U
Application number: JP1986121254U
Authority: JP
Priority date: 1986-08-07
Filing date: 1986-08-07
Publication date: 1988-02-26

Description

[Brief explanation of the drawing]

第１図はこの考案の一実施例による交流サーボ
モータの制御装置のブロツク構成図、第２図は従
来装置のブロツク構成図、第３図ａ〜ｆは本実施
例及び従来装置の動作説明を行なう為のタイムチ
ヤートである。図において、５は交流モータ、７はレゾルバ、
８はレゾルバ励振器、９は基準矩形波発生器、１
０は波形整形回路、１１は立上りパルス発生回路
、１２ａは位相差カウンタＡ、１５はクロツク回
路、１６は逓倍回路。なお、各図中、同一符号は
同一又は相当部分を示す。 FIG. 1 is a block diagram of a control device for an AC servo motor according to an embodiment of this invention, FIG. 2 is a block diagram of a conventional device, and FIGS. This is a time chart for what to do. In the figure, 5 is an AC motor, 7 is a resolver,
8 is a resolver exciter, 9 is a reference square wave generator, 1
0 is a waveform shaping circuit, 11 is a rising pulse generating circuit, 12a is a phase difference counter A, 15 is a clock circuit, and 16 is a multiplier circuit. In each figure, the same reference numerals indicate the same or equivalent parts.

Claims

[Claims for Utility Model Registration] (1) A rotor position detector that generates an AC signal with a phase difference corresponding to changes in the rotation angle of the motor, a reference signal circuit that generates an AC signal with a constant phase, and the above-mentioned A counting control circuit that generates a pulse counting stop signal based on the AC signal from the rotor position detector and a pulse counting start signal based on the AC signal from the reference signal circuit, and the generation timing of each of the above pulse counting signals. a counter that performs counting operation for a period determined by , a clock circuit that inputs clock pulses of a frequency set according to the number of poles of the motor to the counter, and a clock circuit that inputs clock pulses of a frequency set according to the number of poles of the motor to the counter; The present invention includes a current command circuit that calculates a phase current reference according to the position and issues a current command value to the motor drive circuit, and a pulse frequency converter that converts the clock pulse frequency when changing the number of poles of the motor. Characteristic AC servo motor control device. (2) The control device for an AC servo motor according to claim 1, wherein the rotor position detector uses a resolver phase shifter with a different number of poles.