James Lockridge

Title: Innovations of James Lockridge in Motor Control Systems

Introduction

James Lockridge is an accomplished inventor based in Dallas, Texas. He has made significant contributions to the field of motor control systems, particularly in the area of brushed direct current motors. His innovative approach has led to the development of a unique patent that enhances the efficiency and accuracy of motor control.

Latest Patents

Lockridge holds a patent for "Observer-based ripple detection for speed and position measurement for brushed direct current motors." This invention introduces a motor control system and method that utilizes a feedback loop based on a corrected ripple count. The system involves motor control circuitry, which can be implemented in digital logic such as a microcontroller. It receives signals related to coil current and motor voltage, counting discontinuities in the coil current signal caused by the commutation of the motor. An observer function is employed to derive an angular frequency model estimate for the coil current and motor voltage signals. The corrected ripple count is generated by comparing the commutation angle of the motor with an angular position based on the angular frequency model estimate over a specified time interval. This innovative approach allows for the adjustment of the motor drive signal based on the corrected ripple count.

Career Highlights

Lockridge is currently associated with Texas Instruments Corporation, a leading company in the field of semiconductor technology. His work at Texas Instruments has allowed him to apply his inventive skills in a practical setting, contributing to advancements in motor control technologies.

Collaborations

Throughout his career, Lockridge has collaborated with talented individuals such as Venkata Naresh Kotikelapudi and Kaushik Alwala. These collaborations have fostered a creative environment that encourages innovation and the development of cutting-edge technologies.

Conclusion

James Lockridge's contributions to motor control systems exemplify the spirit of innovation in engineering. His patent on observer-based ripple detection showcases his ability to solve complex problems in motor control, making a significant impact in the industry.