Other

Guangdong University of Technology

Yaobin He

Xin Chen

Zhijun Yang

Youdun Bai

Qian Li

Xun Chen

Guanxin Huang

Han Sun

Baisheng Wu

A control method for converting time-varying system into a time-invariant system, comprises: using (n&#x2212;1)to 0order signals of an n-order time-varying, system as feedback to set up a closed loop control for the time-varying system; acquiring real-time values of the coefficients in each order of the time-varying system through a sensor, and calculating variations between the real-time values and the initial values of the coefficients in each order through a controller; amplifying and summing the parameters of every order to obtain a measured disturbance; inputting the measured disturbance, a control signal from a controller and an n-order signal into an extended state observer through to estimate the rest disturbance; summing up the measured and estimated disturbances to obtain total disturbances; and adjusting the above parameters in each order through the controller to convert the time-varying system into the tune-invariant system.

Control method for converting time-varying system into time-invariant system

The present invention also discloses a multi-DOF (Degree of Freedom) large-stroke high-precision motion platform system using the guide mechanism. A large load-bearing guide mechanism comprises: a rigid frame for generating a large-stroke displacement to realize high-speed motion; a core motion platform connected with a motion portion of a non-contact actuator, connected with the rigid frame by a primary flexible hinge group and a secondary flexible hinge group, and used for generating a small-stroke precise displacement by elastic deformation of the flexible hinge groups under driving of the actuator.

Large load-bearing guide mechanism and multi-DOF large-stroke high-precision motion platform system

Growing community of inventors

Guangzhou, China

Yaobin He