Shih-Hai Chien

Title: Shih-Hai Chien: Innovator in Motor Driver Technology

Introduction

Shih-Hai Chien is a prominent inventor based in Hsinchu, Taiwan. He has made significant contributions to the field of motor driver technology, holding a total of 9 patents. His innovative work focuses on enhancing the functionality and reliability of motor drivers.

Latest Patents

One of his latest patents is titled "Motor driver having motor abnormality detection mechanism." This invention provides a motor driver equipped with a mechanism to detect abnormalities in motor operation. It includes a motor position detecting circuit that monitors the rotor's state as it switches between various magnetic pole positions, outputting a commutation signal. An abnormality determining circuit uses this signal to identify time intervals during which the rotor switches positions, ultimately generating an abnormality detected signal. A rotational protection controller circuit then outputs a rotation protecting signal to the motor driving circuit based on this detection. If an abnormal rotation is detected, the controller adjusts the signal to ensure safe operation.

Another notable patent is "Motor driver using motor magnetic pole reference controlling mechanism." This invention features a motor position detecting circuit that identifies the rotor's magnetic pole positions during specific time intervals. A reference magnetic pole switching circuit selects one of these intervals based on the motor's changing rotational speed. The selected magnetic pole position is then used as reference data for the motor driving circuit, enhancing the motor's performance.

Career Highlights

Shih-Hai Chien is currently employed at Anpec Electronics Corporation, where he continues to innovate in the field of motor technology. His work has significantly impacted the efficiency and safety of motor operations.

Collaborations

He has collaborated with notable coworkers, including Jyun-Ping Jiang and Kun-Min Chen, contributing to various projects that advance motor driver technology.

Conclusion

Shih-Hai Chien's contributions to motor driver technology through his patents demonstrate his commitment to innovation and excellence in engineering. His work continues to influence the industry and improve motor performance and safety.