雅特力科技 Artery :: Usher in a new era of 32-bit microcontrollers

Motor-driven

Washing Machine

A motor has played a pivotal role in driving the washing machine application for accurate control and smart operation. The AT32 MCU series features excellent algorithm capability that is capable of achieving high-frequency sampling rate over current, speed and position control circuits to guarantee robustness of washing machines.

Key features

1-shunt/2-shunt current sensing, sensorless FOC control
Weight detection, eccentricity detection, diagonal eccentricity detection
Larger start-up torque, deep field weakening, wider speed range
Real-time compensation for surge load torque, robust speed control

Benefits

High-frequency PWM with high resolution to ensure motor control stability and efficiency.
Up to 2Msps 12-bit ADC to sample motor control signals.
Embedded comparator, for better overcurrent protection.

Applicable Model： AT32F421

Key parameters

Item	Parameters
Control method	Sensorless FOC vector control
Current sampling	1-shunt/2-shunt current sampling
Angular estimation	Luenberger observer + Q-PLL
Speed range	150 ~ 20,000 rpm
Field weakening control	MTPA torque control, anti-demagnetization algorithm
Braking	DC bus constant voltage control
Eccentricity detection	300 rpm low-speed eccentricity detection

Motor-driven

Automotive

Intelligent Household

Industrial Control

Electric Power Tools

Washing Machine

Key parameters

Block diagram

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