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Washing machine motor control method

A technology for motor control and washing machine, applied in the direction of AC motor control, control system, electrical components, etc., can solve the problems of high noise, large volume, low dehydration speed, etc.

Inactive Publication Date: 2017-01-04
WUXI ECOVI TECH
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0002] At present, washing machine motors usually use series-excited motors, which are convenient for speed regulation, but the noise is large; there are also two-speed motors with the same transmission ratio for washing and dehydration, and multi-pole motors and bipolar motors are used respectively. Low, the dehydration effect is not good; although the number of pole pairs of the multi-pole motor can be increased, the volume is large and the efficiency is low

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Embodiment Construction

[0008] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0009] like figure 1 , 2 As shown, the present invention adopts the two-speed motor with the speed measuring motor, the computer program controller of the washing machine, the output waveform of the speed measuring motor is shaped into a pulse signal, triggers the single-chip microcomputer and generates an interruption, and obtains the motor speed parameter y(k) by the interrupt service program , calculate the control deviation e(k)1 according to the set value r(k) and y(k), and calculate the output control value Δu(k)2 according to the deviation; in order to meet the real-time performance of the control value, first output the control value Δu( k)3, and then calculate the intermediate value B(k)4, and finally update the last data with this data. R(k) is the set value, y(k) is the feedback value, and d0, d1, d2 are PID parameters. According ...

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Abstract

The invention discloses a washing machine motor control method. The method is characterized by adopting a double-speed motor with a speed measuring motor and a washing machine computer program controller to shape a motor speed signal into a pulse signal; and using a PID algorithm and using a single-chip microcomputer to detect a speed, calculating a phase shift angle and controlling a motor operation speed.

Description

technical field [0001] The invention relates to a washing machine motor control method, in particular to a motor speed control method. Background technique [0002] At present, the washing machine motor usually adopts a series-excited motor, which is convenient for speed regulation, but the noise is large; there are also two-speed motors with the same transmission ratio for washing and dehydration, and multi-pole motors and bipolar motors are used respectively. Low, the dehydration effect is not good; although the number of pole pairs of the multi-pole motor can be increased, the volume is large and the efficiency is low. [0003] The invention provides a washing machine motor control method, which can realize a high dehydration speed on a common two-speed speed-regulating motor, and can also adjust the speed in a wide range. Contents of the invention [0004] In order to achieve the above object, the washing machine motor control method of the present invention adopts a ...

Claims

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Application Information

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IPC IPC(8): H02P27/04
Inventor 李学涛
Owner WUXI ECOVI TECH
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