Akiyoshi Fujisaki

Title: Akiyoshi Fujisaki: Innovator in Angle of Rotation Detection

Introduction

Akiyoshi Fujisaki is a notable inventor based in Kyoto, Japan. He has made significant contributions to the field of angle detection technology. His innovative work has led to the development of a unique angle of rotation detector, which has practical applications in various industries.

Latest Patents

Fujisaki holds a patent for an angle of rotation detector. This device features a drive unit that supplies 90-degree phase-shifted signals to a pair of stator coils. It measures an analog output from a rotor coil in a resolver. The calculating device calculates the rotational angle of the resolver using the output of an analog-to-digital converter that receives the analog output of the rotor. In one embodiment, the calculating device performs a Fourier transform to compute the phase of a fixed frequency component contained in the output of the rotor coil. In another embodiment, the drive unit supplies signals wherein f(T/2+t)=-f(t), and the calculating device performs a Fourier transform using data from successive half periods of the drive waveform. Additionally, the output of the rotor is sampled at 1/4 period of an excitation signal from the drive unit, allowing the calculating device to determine the phase difference between the excitation signal and the rotor output. In yet another embodiment, the calculating device compares the outputs at two or more points having a fixed time relationship and compares the results to stored reference data to arrive at the angle of rotation. Fujisaki has been granted 1 patent for this innovative technology.

Career Highlights

Akiyoshi Fujisaki is currently employed at Omron Corporation, where he continues to work on advancements in detection technology. His expertise and innovative mindset have made him a valuable asset to the company.

Collaborations

Fujisaki has collaborated with notable colleagues, including Tatsumi Kakimoto and Takeshi Kubo. Their combined efforts have contributed to the development of cutting-edge technologies in their field.

Conclusion

Akiyoshi Fujisaki is a distinguished inventor whose work in angle detection technology has paved the way for advancements in various applications. His contributions continue to influence the industry and inspire future innovations.