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

Motor-driven

Electric Scooter

Electric scooters are powered by a motor. They consist of a motor, battery pack, controller and other supporting systems. Therefore their performance and safety largely depend on the performance of control system. AT32 MCU-based electric scooter integrate power control system, energy recovery system and BMS system, bringing better experience for customers in precise battery power indication, longer battery life and making riding more comfortable.

Key features

Hall sensor for rotor angle estimation
Full FOC current vector control
Regenerative braking energy charging, high speed field weakening, smooth speed limit
Constant torque control, smooth startup, fast acceleration and great climbing ability

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.
FOC vector control for improved energy conversion efficiency and lower consumption.

Applicable Model： AT32F421

Key parameters

Item	Parameters
Motor type	Hub motor Mid-drive motor
Control method	Sensored/Sensorless FOC vector control
Current sampling	1-shunt/low-side MOS sampling
Angular estimation	Hall sensor self-learning and self-correction
Regenerative braking current	Adjustable breaking force
Battery current control	Battery output current control and adaptive charging current control
Protection mechanism	Stall, overcurrent, overvoltag and undervoltage protection

Motor-driven

Automotive

Intelligent Household

Industrial Control

Electric Power Tools

Electric Scooter

Key parameters

Block diagram

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