Estimation of static braking torque of elevator brake based on SVM

YING Zheng1,2, WANG Xuebin1, GUO Jifeng2

(1.National Elevator Product Quality Supervision and Inspection Center, Zhejiang Provincial Special Equipment
Inspection and Research Institute, Hangzhou 310020, China;2.College of Electrical
Engineering, Zhejiang University, Hangzhou 310027, China)

Abstract: Aiming at estimation of the static braking torques of the elevator brakes, the dynamic and static braking performance of the elevator brakes were studied respectively. Elevator brakes were tested by an elevator brake testing system for obtaining the dynamic and static braking torques of the elevator brakes. An estimation method of static braking torques of the elevator brakes based on support vector machines was proposed according to the experiment result. Mean braking torques and initial braking velocity in dynamic braking process were defined as training set input data; meanwhile static braking toques were defined as training set target data. The multivariate regression analysis based on SVM was employed to construct estimation model of static braking torque of elevator brake, the parameters of estimation model were optimized by using girdsearch algorithm. At last, the results indicate that the initial braking velocity is one of factors affect the dynamic braking performance，and the presented method is achieved easily and high accurate.

Key words: elevator brakes; supported vector machines(SVM); dynamic braking; static braking