Eccentricity detection method of roller washing machine

Abstract

The invention discloses an eccentricity detection method of a roller washing machine, wherein the roller washing machine comprises a series excited machine. The eccentricity detection method comprises the steps that the series excited machine is controlled to be started when starting of a dehydration procedure is detected; a rotation speed of the series excited machine is controlled to be accelerated to a first preset rotation speed, the first pre-set rotation speed is maintained for a first pre-set period, and a fluctuation value of the rotation speed of the series excited machine during the first pre-set period is calculated; the rotation speed of the series excited machine is naturally reduced to a second pre-set rotation speed, a speed reduction period for the rotation speed of the series excited machine to decrease from the first pre-set rotation speed to the second pre-set rotation speed is detected, and the second pre-set rotation speed is lower than the first pre-set rotation speed; and an eccentricity value is acquired according to the fluctuation value and the speed reduction period. The eccentricity detection method of the roller washing machine provided by the invention can realize more accurate eccentricity detection and can increase stationarity of the roller washing machine.

Description

technical field [0001] The invention belongs to the technical field of electric appliance manufacturing, and in particular relates to an eccentric detection method of a drum washing machine. Background technique [0002] If there is eccentricity in the dehydration bucket of the drum washing machine during high-speed dehydration, the centrifugal movement of the eccentricity during the high-speed rotation of the dehydration bucket will cause the internal suspension system of the washing machine to vibrate, and the vibration will be transmitted to the cabinet through the shock absorber of the suspension system of the drum washing machine. When the eccentricity is too large, the vibration will be too large, which will cause discomfort to the user. Therefore, detecting and controlling the eccentricity during the dehydration process is a problem that every manufacturer pays great attention to. [0003] At present, due to the limitation of the driving principle of the motor itself,...

AI Technical Summary

Problems solved by technology

[0003] At present, due to the limitations of the driving principle of the motor itself, it is difficult for the series excitation motor used in the drum washing machine to achieve accurate electrical signal detection and processing, so it is difficult to accurately detect the eccentricity

Images