Aisin Seiki Kabushiki Kaisha

Hideya Kurachi

Manabu Kato

Toshihiro Kobayashi

Takayoshi Tsuzuki

Chiaki Sumi

Masayuki Sato

Hiroshi Kajino

Katsuyoshi Mizumoto

Toru Watanabe

Nobuyasu Kimura

Koji Goto

A terminal control system is provided that has a main control device, a plurality of terminal devices controlled by the main control device, and communication lines for connecting the main control device and each of the terminal devices so as to allow bidirectional communication, wherein the configuration is simple, communication time is short, and highly reliable bidirectional communication is possible. The terminal control system comprises a main control device, a plurality of terminal devicescontrolled by the main control device, and communication linesfor connecting the main control device and each of the terminal devices so as to allow bidirectional communication, wherein control data is simultaneously and collectively sent from the main control deviceto a plurality of the terminal devices, and terminal data for each of the terminal devices is independently sent from each of the terminal devicesto the main control device

Terminal control system

The angular speed sensor device includes a drive frame and a detecting frame which are supported on a silicon substrate in a floating mode. The drive frame and the detecting frame are provided with an angular speed about the z-axis when the drive frame and the detecting frame are driven to vibrate in the x-direction, the resulting Corliolis force causing the detecting frame to oscillate in the y-direction. Such a y-direction oscillation of the detecting frame is detected as a displacement signal. On the basis of the displacement signal, the applied angular speed is calculated. The angular speed sensor device includes detecting electrodes and which drive the detecting frame to vibrate in the y-direction when a drive signal is fed to each of the detecting electrodes and which changes the electrostatic capacitance between the detecting frame and each of the detecting electrodes and On the basis of the drive signal and the displacement signal which are fed to each of the detecting electrodes and , the resonant frequency of the detecting frame when it is driven to vibrate in the y-direction and the corresponding Q-value are determined.

Angular speed sensor device

An actuator for an oscillator which is capable of minimizing the fluctuation of the detection error of the oscillation condition of an electrostatic driven oscillator and shortening rise time of the oscillation amplitude of the electrostatic driven oscillator during starting. An actuator oscillates a drive frame and a detecting frame in the X-direction by outputting the drive signal to an electrode and detects the displacement of the drive frame in the X-direction as the displacement signal. The actuator generates a direct-current voltage component of the drive signal controlled to be increased or decreased based on the detected displacement signal and an alternating voltage component of the drive signal having a constant amplitude to maintain the constancy of the oscillation amplitude of the drive frame based on the detected displacement signal. During starting, the actuator generates an alternating voltage component of the drive signal having a larger amplitude compared to at normal operation condition.

Actuator for oscillator

An actuator for an oscillator which can control the fluctuation of the oscillation of an electrostatic driven oscillator such as the detection error by controlling the fluctuation of the amount of the noise mixed into a displacement detecting signal. An actuator oscillates a drive frame and a detecting frame in the X-direction by outputting the drive signal to a drive electrode to detect the displacement of the drive frame in the X-direction as a displacement detecting signal. The actuator generates a direct-current voltage component of the drive signal increased or decreased based on the detected displacement signal and the alternating voltage component of the drive signal having a constant amplitude to maintain the oscillation amplitude of the drive frame constant.

An oscillation type angular velocity sensor includes an oscillator, as exciting device for exciting the oscillator, a detecting device for detecting the direction of oscillation of the oscillator which occurs by a Coriolis force acting on the oscillator when an angular velocity is applied thereto and a correction device adhered to a portion of the oscillator for correcting the direction of the oscillation of the oscillator by varying the elasticity of the portion of the oscillator.

Oscillation type angular velocity sensor

A sensor for detecting rotational movement includes a cylindrical shaped resonator having an outer surface, a first pair of diametrically opposed driving electrodes provided on the outer surface of the resonator, a second pair of diametrically opposed driving electrodes provided on the outer surface of the resonator, a device for generating concurrently a first force and a second force at each of the first driving electrodes and each of the second driving electrodes, respectively, in such a manner that the first force reverses its direction along the radius of the resonator at a regular interval, the second force reverses its direction along the radius of the resonator at a regular interval, and the direction of the first force is opposite to the direction of the second force.

Growing community of inventors

Aichi-ken, Japan

Hideya Kurachi