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Motor rotating speed pulse frequency conversion method, computer readable storage medium and motor

A technology of pulse frequency and motor speed, applied in the direction of single motor speed/torque control, electronic commutator, motor parameter estimation/correction, etc., can solve the problem of large duty ratio error of FG pulse signal and acquisition of FG pulse signal Inaccurate, low precision of FG pulse signal, etc., to achieve the effect of normal and accurate speed feedback, small error and high precision

Active Publication Date: 2020-03-06
ZHUHAI KAIBANG MOTOR MFR +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the deficiencies of the prior art, the present invention proposes a motor speed pulse frequency conversion method, which solves the problem of inaccurate collection of FG pulse signals, eliminates the problem of large duty cycle errors of FG pulse signals, and solves the problem of The received FG pulse signal has low accuracy and large error

Method used

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  • Motor rotating speed pulse frequency conversion method, computer readable storage medium and motor
  • Motor rotating speed pulse frequency conversion method, computer readable storage medium and motor
  • Motor rotating speed pulse frequency conversion method, computer readable storage medium and motor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Embodiment 1: A method for converting motor speed pulse frequency.

[0024] A method for converting the rotational speed pulse frequency of a motor, the specific steps are as follows:

[0025] The pulse frequency conversion circuit receives the pulse signal from the motor controller, and one signal detects the number m of pulse jumps and the total time t1 through the period measurement method, and the period T1 (pulse jump number m such as image 3 As shown, the voltage waveform in the figure jumps from low level to high level, and then from high level to low level, so the number m of pulse jumps in the figure is 2, and the total time t1 and period T1 are as follows Figure 5 As shown, the number of pulse jumps in the total time t1 is 10);

[0026] The other signal detects the number of pulses n and the total time t2 through the counting measurement method, the frequency F is obtained through the formula F=2n / t2, and the period T2 is obtained through the formula T2=1 / ...

Embodiment 2

[0028] Embodiment 2: A motor speed pulse frequency conversion system.

[0029] Such as figure 1 As shown, a motor speed pulse frequency conversion system includes a Hall sensor, a motor controller, a pulse frequency conversion circuit and an air conditioner controller. The three Hall sensors detect the rotor position and transmit the speed feedback signal to the motor controller. The motor The controller processes the feedback signal and outputs a rectangular wave pulse signal. If it is a motor with 4 pairs of poles, the motor controller will output 12 pulse signals every time the rotor rotates. If it is a motor with 5 pairs of poles, the The motor controller outputs 15 pulse signals, and through the pulse frequency conversion circuit, 12 pulse signals are output. The air conditioner controller receives the pulse signal, calculates the motor speed, and sends a speed regulation signal to the motor according to the demand.

[0030] A computer program is stored in the pulse freq...

Embodiment 3

[0031] Embodiment 3: a computer-readable storage medium.

[0032] A computer-readable storage medium is used for storing a computer program, and when the computer program is invoked by a processor, the method for converting the motor speed pulse frequency described in Embodiment 1 is implemented.

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Abstract

The invention provides a motor rotating speed pulse frequency conversion method, a computer readable storage medium and a motor. A received motor rotating speed input pulse signal of a motor controller is divided into two paths of signals to be analyzed; a pulse period T1 of one path of signals is calculated through a period measurement method, a pulse period T2 of the other path of signals is calculated through a counting measurement method; a final pulse period T is calculated according to the pulse periods T1 and T2; and an output pulse waveform is calculated through the pulse period T andoutput to an air conditioner controller. According to the invention, two paths of motor speed pulse signals are analyzed; different numbers of pulse signals can be analyzed and converted; a specific number of pulse signals are output in a unified mode; input pulses with the duty ratio not being 50% are converted into output pulses with the duty ratio being 50%; the output precision of the pulse signals is improved; errors are reduced; and an air conditioner can control the speed of a motor more effectively and stably.

Description

technical field [0001] The invention relates to the technical field of motors, in particular to a method for converting the rotational speed pulse frequency of a motor, a computer-readable storage medium and a motor. Background technique [0002] The FG signal received by the air conditioner controller is the feedback signal of the motor speed. Generally, the FG signal is generated after the Hall sensor signal is processed by the motor controller. After receiving this pulse signal, the air conditioner controller can calculate the motor speed to know the operating status of the air conditioner, such as the flow rate, whether it fails to stop, etc.; at the same time, the air conditioner controller can regulate the air conditioner according to these signals to realize the intelligence of the air conditioner system. change. [0003] The air-conditioning controller recognizes the pulse signal of FG by default, and considers that every 12 pulses received are the rotation of the m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02P23/14
CPCH02P6/08H02P6/16
Inventor 钟绍民李庆高晓峰陈东锁
Owner ZHUHAI KAIBANG MOTOR MFR