Tutomu Hamabe

Title: Tutomu Hamabe and His Contributions to Vehicle Vibration Control.

Introduction

Tutomu Hamabe is an inventor associated with Kanagawa, Japan, and Nissan Motor Company Limited. His patent work addresses active control of vibration and noise, including technologies for reducing unwanted vibration in vehicles. The supplied information lists 2 patents.

Latest Patents

Hamabe’s listed patents include “Apparatus and Method for Actively Reducing Vibration and/or Noise.” The invention determines whether higher-order divergence is occurring in a control system by evaluating two sampled values of a drive signal or residual vibration or noise signal. The samples are taken at phases approximately half a fundamental period apart, helping the system assess the stability of its vibration- or noise-reduction control.

His other listed patent, “Active Vibration Control Apparatus for Vehicle,” describes a system using an active engine mount and a controller connected to vehicle-body, passenger-compartment, and drive-force detectors. The controller adjusts the mount to reduce passenger-compartment vibration when power is being transmitted to the driving wheels, and to reduce vehicle-body vibration when it is not.

Career Highlights

The available patent information connects Hamabe’s work with Nissan Motor Company Limited. His listed inventions focus on active vibration management, applying control systems to both general vibration and noise reduction and vehicle comfort.

Collaborations

The supplied information names Kazushige Aoki and Shigeki Satoh as Hamabe’s coworkers. It does not specify their roles in the listed patents.

Conclusion

Tutomu Hamabe’s listed patent contributions center on active control methods designed to reduce vibration and noise, with particular attention to vehicle operation and passenger comfort.