Hirokazu Sakuma

Title: Hirokazu Sakuma: Innovator in Position Detection Technologies

Introduction

Hirokazu Sakuma is a prominent inventor based in Tokyo, Japan. He has made significant contributions to the field of position detection technologies, holding a total of 11 patents. His innovative work focuses on methods that enhance the accuracy and efficiency of position detection systems.

Latest Patents

One of Sakuma's latest patents is a position detection error correcting method. This method corrects position detection errors using limited storage capacity by calculating correction values through four simple arithmetic operations at startup. This approach reduces startup time delays and minimizes storage consumption, even in scenarios with steep error variations. The correction values are expressed through a periodic function, with parameters stored in non-volatile memory. At startup, these parameters are read, and corresponding correction values are calculated and stored in random access memory. The output values are then used to derive corrected position values.

Another notable invention is a rotary encoder designed to generate a sine wave signal for each revolution of a motor shaft. This encoder includes a calculation mechanism to determine the rotation angle based on the sine wave signal. It features an EEPROM that divides the error value of the rotation angle into multiple regions, allowing for precise error correction based on the rotation angle.

Career Highlights

Hirokazu Sakuma has worked with several esteemed companies, including Mitsubishi Electric Corporation and Mitsubishi Denki Kabushiki Kaisha. His experience in these organizations has allowed him to develop and refine his innovative technologies in position detection.

Collaborations

Sakuma has collaborated with notable colleagues such as Takashi Okamuro and Yoichi Ohmura. Their combined expertise has contributed to advancements in the field of position detection.

Conclusion

Hirokazu Sakuma's contributions to position detection technologies demonstrate his commitment to innovation and excellence. His patents reflect a deep understanding of the complexities involved in accurate position detection, making him a significant figure in this field.