Abstract
A hybrid control method for passive electro-hydraulic servo loading system was proposed based on new compensation structure and nonlinear PID controller. The new compensation scheme used loading motor output shaft angle displacement for the surplus torque feed-forward compensator, which can reduce the system order while effectively eliminated surplus torque. A nonlinear PID controller with regulatory factor was researched, which can overcome the contradiction of conventional PID controller in between rapidity and stability. The simulation and experimental results indicate that the hybrid controller has higher loading spectrum tracking accuracy.
| Original language | English |
|---|---|
| Pages (from-to) | 2411-2414+2418 |
| Journal | Zhongguo Jixie Gongcheng/China Mechanical Engineering |
| Volume | 19 |
| Issue number | 20 |
| State | Published - 25 Oct 2008 |
Keywords
- Electro-hydraulic servo loading
- Feed-forward compensation
- Hybrid control
- Nonlinear PID
- Surplus torque