Yang Quan Chen

Title: Yang Quan Chen and Active Damping in Disc Drives.

Introduction

Yang Quan Chen is an inventor associated with Singapore and Seagate Technology Incorporated. His patent work addresses resonance effects in disc drives, where unwanted vibration can affect the accurate positioning of a drive’s actuator arm and head.

Latest Patents

The provided information identifies one patent associated with Chen: Method and Apparatus for Handling Resonance Effects in Disc Drives Using Active Damping. The invention monitors the actuator arm’s position error signal (PES), processes it through a bandpass filter centered on a known resonance frequency, and applies the resulting feedforward compensation signal to the servo control signal. In the described disc drive, a controller combines the compensation signal with the servo controller’s output to generate the control signal for the actuator assembly. This approach is designed to counter resonance and improve actuator positioning.

Career Highlights

Chen’s listed patent reflects work on control techniques for disc-drive systems. His disclosed method combines PES monitoring, frequency-specific filtering, and feedforward compensation to address mechanical resonance. The supplied information associates him with 1 patent and Seagate Technology Incorporated.

Collaborations

The provided data names Ming Zhong Ding and Wing Kong Chiang as Chen’s coworkers. It does not specify their roles in the patent or describe particular collaborative projects.

Conclusion

Yang Quan Chen’s identified invention applies active damping to reduce resonance effects in disc drives, illustrating how signal processing and servo control can work together to support precise actuator operation.