Adaptive backstepping pitch control of direct drive hydraulic pump-controlled-motor system

作者：Gu Yajing; Yin Xiuxing; Liu Hongwei^*; Li Wei; Lin Yonggang; Xu Quankun

来源：Acta Energiae Solaris Sinica, 2016, 37(12): 3219-3225.

• Hydraulic pump
• Inversion control
• Nonlinearity
• Pitch
• Uncertainty

To solve the problems of high energy consumption and complex control mechanism in conventional pitch system, a closed loop direct- drive hydraulic pump-controlled-motor pitch system was proposed, which used closed hydraulic circuit structure of variable speed servo motor driving dosing pump. Aiming at nonlinearity and uncertainty existing in pitch system, the adaptive inversion controller was designed based on backstepping technique and combining with the adaptive algorithm. The stability of system was verified through special Lyapunov functions. The simulation check was carried out based on practical measuring data. The results show this pitch system has good adaptivity, robustness and higher pitch angle control precision, which can stabilize output power of the unit.

• 出版日期2016
• 单位浙江大学