Edward H Patrick

Title: The Innovations of Edward H. Patrick

Introduction

Edward H. Patrick is an accomplished inventor based in Whittier, California. He has made significant contributions to the field of velocity measurement, particularly in servo control systems. His innovative approach has led to the development of a unique method that enhances the accuracy of rotational velocity measurements.

Latest Patents

Edward H. Patrick holds a patent for a "Velocity feedback measurement method." This invention aims to provide accurate measurement of rotational velocity and an adequate bandwidth for servo control across a wide range of velocities. The method utilizes unique speed computation algorithms that combine fine and coarse shaft velocity measurements from a tachometer. The preferred embodiments of this invention utilize control signals derived from the velocity measurements to control motor speed, such as in the servo control of a digital tape drive. The invention employs an optical encoder coupled to a reel-shaft to generate tachometer pulses as the shaft rotates. The coarse measurement can take two forms for different speed ranges, either counting the number of pulses in a sampling interval or counting the number of sampling intervals per detection of a tachometer pulse. The fine velocity measurement is based on detecting time delays between certain tachometer pulses and the edges of sampling intervals, providing corrections for variations in phase relationships.

Career Highlights

Edward H. Patrick has had a notable career, working with Seagate Removable Storage Solutions LLC. His expertise in velocity measurement has positioned him as a key figure in the development of advanced servo control technologies. His innovative contributions have been instrumental in enhancing the performance of digital tape drives.

Collaborations

Edward has collaborated with talented individuals such as Turguy Goker and Stanley S. Tang. These collaborations have fostered an environment of innovation and have contributed to the successful development of his patented technologies.

Conclusion

Edward H. Patrick's work in the field of velocity measurement has led to significant advancements in servo control systems. His innovative methods and collaborations have made a lasting impact on the industry.