1456 results about "Stabilization control" patented technology

The invention provides a control method for simultaneously stabilizing a laser wavelength and power and discloses a control device of simultaneous stabilization of the laser wavelength and the power, wherein the device is formed through using the method. A wavelength monitoring loop and a power monitoring loop are established. An apparatus signal processor adopts a proportional integral control (PIC) method to control the laser wavelength and the output power. Through using a proportional integral control flow to simultaneously monitor the laser wavelength and the power, and independent and integrated control, defects generated through using the prior art can be overcome, wherein the defects comprises that: wavelength control precision is low; a frequency stabilization control circuit is complex; practicality is low; and the laser wavelength and the output power can not be simultaneously stabilized. The control device for simultaneously stabilizing the laser wavelength and the power of the invention possesses characteristics of a simple structure, high precision and a low noise. And the device is easy to be realized. By using the method and the device of the invention, a simple and practical laser light source with a simultaneously stable frequency and the power is provided for a plurality of types of the lasers in the application and optical precision measurement field.

The invention discloses a stabilization control system based on four-wheel drive for an electric vehicle. In the stabilization control system, a first stabilization control unit judges whether lateral acceleration is smaller than a preset acceleration threshold; if not, the first stabilization control unit calculates a transverse load transfer rate according to a lateral acceleration signal and judges the state of the electric vehicle according to the transverse load transfer rate; if the electric vehicle is in a first tendency, a second stabilization control unit controls a vehicle body of the electric vehicle to maintain stable; if the electric vehicle is in a second tendency, the first stabilization control unit controls a motor to apply a braking force to an outer front wheel of the electric vehicle through a motor controller; and if the electric vehicle is in a third tendency, the first stabilization control unit controls the motors to apply braking forces to the outer front wheel and an inner rear wheel of the electric vehicle through the motor controllers. In the stabilization control system, the first stabilization control unit takes corresponding vehicle stabilization measures according to different states of the electric vehicle, so that the vehicle body is stabilized. The invention further discloses a stabilization control method based on the four-wheel-drive for the electric vehicle, as well as the electric vehicle.

A stability control apparatus, includes: a grip detector that changes an output based on a grip force applied in a direction hindering a slippage of a wheel, acting on a contact face between the wheel supported by a wheel supporting rolling bearing unit and the road surface, the wheel supporting rolling bearing unit for supporting freely rotatably the wheel to a vehicle body; and a controller that performs a control for keeping a running stability of the vehicle in response to an input of a detection signal of the grip detector.

In an inverted pendulum type mobile unit that performs inverted pendulum stabilization control and traveling control based on a velocity target value as an input variable, a change in tilt angle of a vehicle body occurring during traveling is smoothed. The target value generating portion in the inverted pendulum type mobile unit generates the velocity target value VREF of the mobile unit and the tilt angular rate target value ωREF of the vehicle body so that a second-order time derivative of VREF is continuous and ωREF is continuous with respect to time. The controller in the inverted pendulum type mobile unit calculates a torque command value Tcom for the motor drivers using VREF and ωREF as a control target to allow the mobile unit to travel at VREF while maintaining the state where the gravity center of the vehicle body or the gravity center of total mass of the vehicle body and a subject supported on the vehicle body is located above the rotation center of the wheels.