John F Chang

Title: The Innovations of John F. Chang

Introduction

John F. Chang is a notable inventor based in Andover, MA (US). He has made significant contributions to the field of MEMS gyroscopes, particularly focusing on reducing errors in comb drive vibratory gyroscopes. His work has implications for various applications, enhancing the accuracy and reliability of gyroscopic measurements.

Latest Patents

John F. Chang holds a patent for "MEMS gyroscopes with reduced errors." This innovative technology effectively cancels drive-induced Coriolis accelerometer offset by demodulating the output during equal times of in-phase and anti-phase drive of the shuttle. This method utilizes the velocity signal for angular rate demodulation, which significantly reduces or eliminates the corresponding thermal and die-stress effects that typically require calibration.

Career Highlights

Chang is currently employed at Analog Devices, Inc., where he continues to develop cutting-edge technologies in the field of MEMS devices. His expertise and innovative approach have positioned him as a key figure in advancing gyroscopic technology.

Collaborations

John F. Chang collaborates with John Albert Geen, contributing to the development of innovative solutions in their field. Their partnership exemplifies the importance of teamwork in driving technological advancements.

Conclusion

John F. Chang's contributions to MEMS gyroscopes demonstrate his commitment to innovation and excellence in engineering. His work not only enhances the performance of gyroscopic systems but also sets a foundation for future advancements in the field.