Nobutaka Machida

Title: **The Innovations of Nobutaka Machida: A Pioneer in Piezoelectric Technology**

Introduction

Nobutaka Machida is a notable inventor based in Saitama, Japan, recognized for his significant contributions to the field of piezoelectric technology. With three patents under his name, his work has greatly impacted various applications of actuators and control systems.

Latest Patents

Machida's recent patents showcase his inventive prowess and dedication to enhancing technology. One of his prominent inventions is the **pre-loaded actuator using a piezoelectric element**. This innovation improves workpiece displacement, frequency of repetition, accuracy, and repeatability. The actuator employs a coil spring to provide a compressive force that efficiently compresses a laminated piezoelectric element without causing damage. Upon activation, this pre-loaded actuator is capable of delivering a full workpiece drive stroke, thanks to the prior axial compression of the piezoelectric element. His patent also includes methods for pre-loading and dampening element oscillation.

Another significant patent by Machida is the **driving power unit for a piezoactuator system and method**. This invention utilizes a semiconductor switching device tailored to supply power to the piezoelement. The system is designed to turn off the semiconductor switching device when the voltage measured across the piezoelement reaches a predetermined value. Additionally, the invention incorporates sensing devices that reactivate the switching device when the voltage drops and automatically turn off the voltage source if the device remains on for too long. The integration of memory and logic circuitry further enhances the efficiency of the switching sequence.

Career Highlights

Nobutaka Machida currently works at Fuji Electric Co., Ltd., a renowned company known for its advancements in electric and electronic equipment. His technical expertise and innovative ideas have established him as a valuable asset within the organization, contributing to the company’s successes in the field of automation and control systems.

Collaborations

Throughout his career, Machida has had the opportunity to collaborate with talented colleagues, including Tatuya Wada and Hiroshi Hikita. These collaborations have fostered a creative environment that promotes the exchange of ideas and advancements in their respective fields.

Conclusion

Nobutaka Machida's contributions to piezoelectric technology signify a vital progression in actuator innovation. His patents highlight not only his technical ability but also his commitment to enhancing the functionality and efficiency of technological systems. As he continues his work at Fuji Electric Co., Ltd., Machida stands as a testament to the power of innovation in transforming industries through inventive thinking and collaborative efforts.