Zhi Qu

Title: Zhi Qu - Innovator in Brushless Motor Control Technology

Introduction

Zhi Qu is a notable inventor based in Bellevue, WA (US), recognized for his contributions to the field of motor control technology. With a total of 2 patents, he has made significant advancements in the design and functionality of brushless motors, particularly in power tools.

Latest Patents

Zhi Qu's latest patents focus on low-speed sensorless brushless motor control in power tools. The first patent describes a control unit for a brushless DC motor that detects the initial position of the rotor and commutates the motor using a low-speed motor commutation scheme. This innovative approach allows the motor to operate efficiently until the output speed exceeds a predetermined threshold. The control unit then switches to commutation based on back-electromotive force (back-EMF) voltage, enhancing the motor's performance. The second patent outlines a power tool that includes a brushless motor with a stator and rotor configuration. It features a control unit that detects incorrect rotor rotation by applying voltage pulses and measuring motor currents, ensuring reliable operation.

Career Highlights

Zhi Qu is currently employed at Black Decker Inc., where he continues to develop cutting-edge technologies in motor control. His work has contributed to the advancement of power tools, making them more efficient and user-friendly.

Collaborations

Zhi Qu has collaborated with talented individuals such as Shailesh P Waikar and Wing Lin, enhancing the innovation process through teamwork and shared expertise.

Conclusion

Zhi Qu's contributions to brushless motor control technology have positioned him as a key figure in the field. His patents reflect a commitment to innovation and improvement in power tool functionality.