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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, general control strategy, control system, etc., can solve the problems of low efficiency, large volume, low dehydration speed, etc.

Inactive Publication Date: 2017-07-07
CHANGZHOU XINYA ELECTROMOTOR
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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

Method used

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Embodiment Construction

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

[0009] Such as figure 1 , 2 As shown, the present invention uses a two-speed motor with a tachometer motor and a washing machine computer program controller. The output waveform of the tachometer motor is shaped into a pulse signal, which triggers the single-chip microcomputer and generates an interrupt. The interrupt service program obtains the motor speed parameter y(k) , Find the control deviation e(k)1 according to the set values ​​r(k) and y(k), and find the output control value Δu(k)2 according to the deviation; to meet the real-time 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, d0, d1, and d2 are the PID parameters. According to the calculated control deviation, the phase shift angle is changed to...

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Abstract

The invention discloses a washing machine motor control method, which adopts a double-speed motor with a speed measuring motor and a washing machine computer program controller to shape the motor speed signal into a pulse signal, and uses a PID algorithm to detect the speed with a single-chip computer, calculate the phase shift angle, and control the operation of the motor speed.

Description

Technical field [0001] The invention relates to a method for controlling a washing machine motor, in particular to a method for controlling the motor speed. Background technique [0002] At present, washing machine motors usually use series motors, which are convenient for speed adjustment, but have high noise. There are also two-speed motors with the same washing and dehydration transmission ratios. Multi-pole motors and two-pole motors are enabled respectively, but the motor is directly driven, and the dehydration speed is 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 method for controlling a washing machine motor, which can realize high dehydration speed on an ordinary two-speed speed-regulating motor, and can also adjust the speed in a wide range. Summary of the invention [0004] In order to achieve the above objectives, the wa...

Claims

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Application Information

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IPC IPC(8): H02P23/00
CPCH02P23/0004
Inventor 严洋
Owner CHANGZHOU XINYA ELECTROMOTOR
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