Guangdong University of Technology

Other

Hao Peng

Zhijun Yang

Youdun Bai

Qian Li

Guanxin Huang

Ruiwen He

Shengqiang Wei

Jianhua Deng

Jing Zhong

A rigid-flexible coupling high-accuracy galvo scanning motor comprises: a stator, a rotor rotating relative to the stator, bearing seats and at least two groups of encoders. The rigid-flexible coupling bearings are installed on the rotating shaft of the rotor; each of the rigid-flexible coupling bearings comprises: a rigid bearing and a flexible hinge ring which is elastically deformable, and the flexible hinge ring is fixed in an inner ring of the rigid bearing; the at least two groups of encoders comprise: a first group of encoders and a second group of encoders; the first group of encoders is used to measure a rotation angle of the rotating shaft; and the second group of encoders is used to measure a rotation angle of the inner ring of the rigid bearing. A friction dead zone is avoided through the elastic deformation of the flexible hinge ring, thereby reducing a disturbance bandwidth.

Rigid-flexible coupling high-accuracy galvo scanning motor and control method thereof

A rigid-flexible coupling motion platform driven by a ball screw includes a base, a linear guide rail fixed to the base, a rigid-flexible coupling platform, a servo motor, a ball screw, a guide rail sliding block, a displacement sensor and a driving controller. The rigid-flexible coupling platform includes a frame and a workbench. The frame and the workbench are connected through a flexible hinge; the servo motor is configured to drive the ball screw; the workbench is connected with the ball screw; the frame is connected with the linear guide rail by the guide rail sliding block; the displacement sensor is configured to feed back the position of the workbench; and the driving controller controls the ball screw to drive the workbench to move according to different control modes. The advantages of the ball screw drive and the rigid-flexible coupling motion platform are fully combined, and the positioning precision of the platform is greatly improved.

Rigid-flexible coupling motion platform driven by ball screw and control method thereof

The disclosure provides a method and device for reliability assessment of a wide area protection system, solving the technical problem that a reliability research result of a current wide area protection system is only limited to reliability research of a communication network thereof, but a reliability analysis model for an overall system does not exist. The method provided by the disclosure includes: S, acquiring an information acceptance rate d of a wide area monitoring center of a wide area protection system; S, obtaining the accuracy p(d) of wide area protection initiation, the accuracy p(d) of fault area positioning and the accuracy p(d) of fault element recognition according to the information acceptance rate d; and S, multiplying the accuracy p(d) of wide area protection initiation, the accuracy p(d) of fault area positioning and the accuracy p(d) of fault element recognition to obtain the decision accuracy Pof the wide area protection system.

Method and device for reliability assessment of wide area protection system

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Guangzhou, China

Hao Peng