抽油机, 扭矩, 软测量, 粒子群优化最小二乘支持向量机(PSO_LSSVM)

A new model of the torque soft measurement method was presented based on PSO_LSSVM.This method used particle swarm optimization algorithm to replace the previous cross-validation method for model parameter’s optimization, in order to avoid the blindness of the parameter choices and improve efficiency.It is verified by simulation, the soft measurement model for torque of pumping unit based on PSO_LSSVM can effectively address the deficiencies of traditional measurement methods and obtain better measurement accuracy and speed , possessing benefits of an outstanding ability for small-sample study and being easy to compute. 