JPS62188999U

JPS62188999U -

Info

Publication number: JPS62188999U
Application number: JP7569686U
Authority: JP
Priority date: 1986-05-20
Filing date: 1986-05-20
Publication date: 1987-12-01
Anticipated expiration: 2001-05-20
Also published as: JPH051999Y2

Description

[Brief explanation of the drawing]

第１図は本考案のステツピングモータの制御回
路の第１実施例のブロツク系統図、第２図はマイ
クロステツプ駆動に於ける理想的な駆動特性図、
第３図はマイクロステツプ駆動の実際の駆動特性
図、第４図は第１図の動作を説明するための図、
第５図は本考案のステツピングモータの制御回路
の第２実施例のブロツク系統図、第６図は第５図
の動作を説明するための図である。１……パルス発生回路、２，１２……入力端子
、３……演算回路、４……カウンタ、５……極性
反転回路（第１切換回路）、６……極性反転回路
（第２切換回路）、７……駆動回路、８……ステ
ツピングモータ、９……遅延回路、１０……イン
バータ、１１……ＡＮＤ回路。 Fig. 1 is a block system diagram of the first embodiment of the stepping motor control circuit of the present invention, Fig. 2 is an ideal drive characteristic diagram in microstep drive,
Fig. 3 is an actual drive characteristic diagram of microstep drive, Fig. 4 is a diagram for explaining the operation of Fig. 1,
FIG. 5 is a block diagram of a second embodiment of the stepping motor control circuit of the present invention, and FIG. 6 is a diagram for explaining the operation of FIG. 5. 1...Pulse generation circuit, 2, 12...Input terminal, 3...Arithmetic circuit, 4...Counter, 5...Polarity inversion circuit (first switching circuit), 6...Polarity inversion circuit (second switching circuit) ), 7... Drive circuit, 8... Stepping motor, 9... Delay circuit, 10... Inverter, 11... AND circuit.

Claims

[Scope of utility model registration request]

When stepping the mover by sequentially switching the current flowing through multiple phase windings arranged at different electrical angles, there are two types: normal step drive, in which a constant current is passed through the phase windings, and phase winding This is a control circuit for a stepping motor that is capable of microstep drive, which controls the current flowing through the phase windings by controlling the voltage applied to the phase winding or its pulse width, thereby driving the motor with a smaller step amount than normal step drive. The stepping motor is equipped with a drive circuit that can switch the stepping motor between normal step drive and microstep drive, as well as switching the drive direction, and the step amount of the drive instruction to the stepping motor is defined as m in the microstep drive. When the ratio of the feed amount of step drive to microstep drive is n,
an arithmetic circuit that receives an instruction for an instruction step amount m and calculates (m+n) or (|m-n|); a counter that counts the calculation results of this arithmetic circuit;
When this counter (m+n) or (|m-n|) is counted, a first switching circuit switches the drive circuit from microstep drive to normal step drive;
- n A control circuit for a stepping motor.