Title :
Research of orientation detection method for spherical motor and effect on PD control system based on machine vision
Author :
Zhe Qian ; Qunjing Wang ; Xiwen Guo ; Guoli Li ; Shan Ma
Author_Institution :
Sch. of Electr. Eng. & Autom., Anhui Univ., Hefei, China
Abstract :
The rotor orientation detection of spherical motor is crucial to the closed-loop control. The paper presents the method for measuring rotor orientation based on machine vision. The pattern code generation, deriving method and pattern processing algorithm are introduced. With the model built in OpenGL, measurement errors of three degrees of freedom (DOF) are derived. Resolution and accuracy of the measurement method are analyzed. Considering the measurement of time delay, the effect on PD control system with simplified dynamical model of spherical motor is presented.
Keywords :
PD control; application program interfaces; closed loop systems; computer vision; control engineering computing; electric machine analysis computing; machine control; object detection; position control; reluctance motors; rendering (computer graphics); rotors; OpenGL; PD control system; closed-loop control; deriving method; machine vision; pattern code generation; pattern processing algorithm; rotor orientation detection method; rotor orientation measurement; spherical motor; time delay measurement; variable reluctance spherical motor; Accuracy; Equations; Mathematical model; PD control; Permanent magnet motors; Reluctance motors; Rotors;
Conference_Titel :
Electrical Machines and Systems (ICEMS), 2014 17th International Conference on
Conference_Location :
Hangzhou
DOI :
10.1109/ICEMS.2014.7013865
