Jianjun Li

Title: Innovations of Jianjun Li in Disk Drive Technology

Introduction

Jianjun Li is a notable inventor based in Rancho Santa Margarita, CA (US). He has made significant contributions to the field of disk drive technology, particularly in the evaluation of dual stage actuators. His innovative approach has led to advancements in the performance and reliability of disk drives.

Latest Patents

Jianjun Li holds a patent for a method titled "Evaluating dual stage actuator response in a disk drive by adding sinusoid to control signal." This patent describes a technique for evaluating a dual stage actuator (DSA) servo loop in a disk drive. The method involves adding a first sinusoidal signal to a VCM control signal generated by a VCM servo loop. The response of the VCM control signal to the first sinusoidal signal is measured, allowing for the computation of a closed loop response of the VCM servo loop. Additionally, a second sinusoidal signal is added to a microactuator control signal generated by a microactuator servo loop, further enhancing the evaluation process.

Career Highlights

Jianjun Li is associated with Western Digital Technologies, Inc., where he applies his expertise in disk drive technology. His work has been instrumental in improving the efficiency and effectiveness of disk drive systems. With a total of 1 patent, he has demonstrated his commitment to innovation in this field.

Collaborations

Throughout his career, Jianjun Li has collaborated with talented individuals such as Shan Tang and Jianguo Zhou. These collaborations have fostered a creative environment that encourages the development of cutting-edge technologies.

Conclusion

Jianjun Li's contributions to disk drive technology exemplify the impact of innovative thinking in engineering. His patent and collaborations highlight his dedication to advancing the field, making him a valuable asset in the realm of technology.