Makoto Yajima

Title: The Innovations of Makoto Yajima

Introduction

Makoto Yajima is a notable inventor based in Hitachi, Japan. He has made significant contributions to the field of motor technology, particularly in the design of deceleration apparatuses for industrial applications. His work has been instrumental in enhancing the efficiency and performance of AC servo motors.

Latest Patents

Yajima holds a patent for a "Deceleration apparatus for motor and drive circuit for use in motor." This invention focuses on a deceleration apparatus of an AC servo motor specifically designed for industrial sewing machines. The apparatus performs a regenerating braking operation during the motor's deceleration period. Initially, an intermittent regenerating braking operation is executed by supplying current in the control circuit of the motor drive circuit. Following this, a continuous regenerating braking operation is carried out. The design includes a drive element, which may consist of a switching element or a transistor, that is protected during the intermittent regenerating braking operation or when a small regenerating braking current is applied.

Career Highlights

Throughout his career, Makoto Yajima has worked with prominent companies such as Hitachi, Ltd. and Hitachi Taga Engineering Co., Ltd. His experience in these organizations has allowed him to develop and refine his innovative ideas in motor technology.

Collaborations

Yajima has collaborated with several talented individuals in his field, including Masayuki Kanari and Kazuaki Takada. These partnerships have contributed to the advancement of his inventions and the overall progress in motor technology.

Conclusion

Makoto Yajima's contributions to the field of motor technology, particularly through his patented deceleration apparatus, highlight his innovative spirit and dedication to improving industrial applications. His work continues to influence the efficiency of AC servo motors in various industries.