Roller washing machine and inertia detection method and device thereof

Abstract

The invention discloses a roller washing machine and an inertia detection method and device of the roller washing machine. The inertia detection method includes the following steps that the position of a rotor of a motor is detected, and feedback speed of the motor is calculated according to the position of the rotor; according to the position of the rotor and the feedback speed, the roller position corresponding to a forward direction zero crossing point of sped fluctuation is obtained when the roller washing machine is in an unbalance load state; an acceleration instruction is generated at the roller position to control the motor to accelerate, and after the motor operates for preset time in an accelerated mode, integration is performed on electromagnetic torque of the motor to obtain a first integration result; after the motor operates for the preset time in the accelerated mode, integration is performed on the feedback speed to generate an average speed instruction so that the motor can be controlled to operate at constant speed, and integration is performed in electromagnetic toque to obtain a second integration result in the constant-speed operation process of the motor; according to the first integration result and the second integration result, the inertia of the roller washing machine is calculated. According to the method, influences of the load unbalance and roller friction can be considered, so that precision of inertia detection is improved.

Description

technical field [0001] The invention relates to the technical field of washing machines, in particular to an inertia detection method of a drum washing machine, an inertia detection device and a drum washing machine with the inertia detection device. Background technique [0002] When users use the washing machine, they hope that the washing machine can automatically provide the appropriate water level and detergent dosage according to the weight of the clothes, so as to avoid the problems of unclean clothes or water and electricity consumption caused by blind selection. Many of the current washing machines have the function of automatically detecting the weight of the laundry. Among them, there are two main methods for measuring the weight of the laundry: one is to use a load cell to directly measure the weight of the laundry; the other is to use the motor to detect the weight of the washing machine. The time, current and other parameters needed to accelerate or decelerate ...

AI Technical Summary

Problems solved by technology

However, when the load inertia is detected through acceleration and deceleration, the difference in the friction of the drum of the washing machine is not considered, resulting in a large deviation in the detection accuracy, and the influence of the load imbalance on the inertia detection is also not considered, which greatly affects the detection accuracy, resulting in the weighing of the washing machine. Heavy errors, can not meet the needs of users

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