JPH0223712U

JPH0223712U -

Info

Publication number: JPH0223712U
Application number: JP10107188U
Authority: JP
Priority date: 1988-07-29
Filing date: 1988-07-29
Publication date: 1990-02-16

Description

[Brief explanation of the drawing]

第１図は本考案にかかる位置決め装置の一実施
例の構成図、第２図は第１図の装置のメモリに格
納されたデータの一例を示した図である。１……モータ、２……位置検出部、２１，２２
……磁気レゾルバ、３……駆動回路、４……メモ
リ、５……位置算出回路。 FIG. 1 is a block diagram of an embodiment of a positioning device according to the present invention, and FIG. 2 is a diagram showing an example of data stored in the memory of the device shown in FIG. 1...Motor, 2...Position detection section, 21, 22
...Magnetic resolver, 3...Drive circuit, 4...Memory, 5...Position calculation circuit.

Claims

[Claims for Utility Model Registration] A motor that is a direct drive type and whose rotational position is determined by the number of pulses given; a first position detecting means having the position as the origin; and a first position detecting means built in the motor, having a detection resolution smaller than that of the first rotation detecting means;
a second position detecting means capable of detecting the absolute position of rotation and outputting absolute position data for specifying the origin detected in the origin return operation; Based on a memory in which data on the number of pulses applied to the motor is stored in correspondence and absolute position data detected by the second position detection means, the number of pulses is determined using the memory, and this number of pulses is used as a reference. A positioning device comprising: a position calculation means for calculating an absolute rotational position from an increase/decrease in the number of pulses; and a drive circuit for determining a rotational position of a motor by feedback control from the calculated absolute rotational position.