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Control method of multi-zero signal quadrature encoder

A technology of quadrature encoding and control method, applied in the control field of multi-zero signal quadrature encoder, can solve the problems of low adaptability of multi-pole motors, unstable dynamic correction of multi-line motors, etc., to improve the accuracy of correction , Improve the accuracy of detection and ensure the effect of stability

Pending Publication Date: 2022-02-18
JIANGSU UNIV OF SCI & TECH
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Problems solved by technology

[0005] Purpose of the invention: In order to solve the problem that the current encoder control method has low adaptability to multi-pole motors and the dynamic correction of multi-line motors is unstable, the present invention provides a control method for multi-zero signal quadrature encoders, including Two control modes: pulse accumulation mode and pole logarithmic mode

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  • Control method of multi-zero signal quadrature encoder
  • Control method of multi-zero signal quadrature encoder
  • Control method of multi-zero signal quadrature encoder

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Embodiment Construction

[0024] The technical solution of the present invention will be further described below in conjunction with the accompanying drawings.

[0025] A control method for a multi-zero signal quadrature encoder, such as figure 1 shown, including the following steps:

[0026] Step S1: Select the corresponding pulse accumulation mode and pole logarithm mode according to the number of pole pairs of the motor, the rotation angle and the frequency multiplication of the encoder;

[0027] Step S2: Pulse accumulation mode: when the mechanical angle is less than or equal to 360°, it is set to output a calibration zero signal when the pulse accumulation reaches a certain number;

[0028] Step S3: pole logarithm mode: when the mechanical angle is greater than 360°, obtain the current pole logarithm of the motor, input it into the quadrature encoder controller, and the quadrature encoder will generate the same zero signal as the pole logarithm, and every The number of A-phase and B-phase signal...

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Abstract

The invention provides a control method of a multi-zero signal quadrature encoder. The control method comprises the following steps: selecting a corresponding pulse accumulation mode and a pole pair number mode according to the size of a rotation angle; setting an expected zero position through a quadrature encoder controller; and finally, setting the pulse width of the Z-phase zero-point signal to be unchanged within a certain rotating speed through a counting mode of the quadrature encoder so as to ensure the pulse width stability. Through the control method of the multi-zero-point signal orthogonal encoder, adaptation of a multi-antipode motor and dynamic correction of a multi-wire-number motor are achieved, and the position reading accuracy degree is improved for different working conditions.

Description

technical field [0001] The invention relates to the technical field of quadrature encoder control, in particular to a control method of a multi-zero signal quadrature encoder. Background technique [0002] The encoder is a sensor installed on the motor to measure the rotation angle and speed of the motor. At present, the commonly used encoder is a quadrature encoder, which judges the direction of rotation of the motor by outputting three sets of square wave pulses A, B and Z phases and Speedometer. Among them, there is a 90° phase difference between the two-phase pulse output of A and B, so the rotation direction can be judged according to the timing phase relationship of the two signals, and the speed and displacement can be measured according to the number of pulse signals of phase A and B; the phase Z is the zero point signal, that is After a mechanical cycle, it is used for reference point positioning. When the encoder rotates to the zero point, the Z signal will send a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02P23/14G01P3/481
CPCH02P23/14G01P3/481H02P2203/03
Inventor 张懿张雪梦魏海峰王浩陈
Owner JIANGSU UNIV OF SCI & TECH
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