Location History:
- Kadoma, JA (1977)
- Hirakata, JP (1983 - 1988)
- Osaka, JP (1987 - 1990)
Company Filing History:
Years Active: 1977-1990
Title: Innovations and Contributions of Takashi Dohi in Motor Control Technology
Introduction
Takashi Dohi, based in Hirakata, Japan, is a distinguished inventor with an impressive portfolio of 19 patents. His work primarily revolves around sophisticated motor control technologies, which have significant applications in various industries, particularly in the manufacturing sector.
Latest Patents
Among his notable innovations, Dohi's latest patents include an "Apparatus for controlling AC servo motor" and a "Motor controller for a sewing machine." The apparatus for controlling an AC servo motor intelligently manages the rotational speed of synchronous motors driven by inverters. It incorporates a current detector that monitors input current and interrupts the energization of motor switches when the current exceeds a set threshold. This design is further enhanced by a second timer circuit to effectively manage the switching between motor phases, ensuring optimal performance.
In addition, his motor controller for a sewing machine demonstrates a clever approach to managing motor speed. It initiates a counting mechanism for pulse signals emitted during motor rotation upon receiving a stop signal and detecting the needle position. The controlled slowing down of the motor speed based on counted signals is crucial for ensuring precision and safety in sewing applications.
Career Highlights
Takashi Dohi has made significant strides in the field of motor control at Matsushita Electric Industrial Co., Ltd. His contributions have helped the company maintain its reputation for innovation in electronic machinery and automation. Dohi's patents reflect his adeptness at merging advanced technology with practical applications, ultimately enhancing operational efficiency in machines.
Collaborations
Throughout his career, Dohi has collaborated with esteemed colleagues, including Shigeo Neki and Nozomu Shinozaki. These collaborations have fostered a dynamic exchange of ideas and advancements in motor control technology, contributing to notable innovations within their organization.
Conclusion
Takashi Dohi's contributions to the realm of motor control through his numerous patents exemplify his commitment to innovation and technological advancement. His work not only advances the capabilities of machinery but also paves the way for future developments in the industry. As he continues to innovate, his impact on motor control technology will undoubtedly leave a lasting legacy in engineering and manufacturing.