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Advanced sensorless drive technique for brushless DC motors
Advanced sensorless drive technique for brushless DC motors
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机译:适用于无刷直流电机的高级无传感器驱动技术
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摘要
Systems and methods for determining the position of the rotor of brushless DC motor drives over a wide speed range from near zero to high speed without additional hardware. This sensorless method and system provides continuous rotor position information with good accuracy and resolution even at very low speed operation, making them suitable for high performance applications. Motor current is detected from two of three motor phases and is compared with reference values. A speed-independent function is calculated to generate continuous rotor position information that covers almost all speed ranges from near zero to high speed. Suitable control of current and speed may then be provided to the motor.
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