Abstract
Aiming at the tracking control problem of electro-hydraulic servo system with uncertainties and nonlinearities, the second-order sliding mode (SOSM)control algorithms based on time optimal control and Lyapunov function are researched. The problems existed in the existing time-optimal sliding mode control law are analyzed, and an improved SOSM control algorithm with nearly time-optimal control is developed to effectively reduce chattering and enhance responding speed without losing robustness of the system. Taking the steering system model of practical transporting and lifting machinery as example, the simulation study on the algorithm is carried out, and its effectiveness is confirmed.
| Original language | English |
|---|---|
| Pages (from-to) | 72-75 |
| Number of pages | 4 |
| Journal | Jixie Gongcheng Xuebao/Journal of Mechanical Engineering |
| Volume | 41 |
| Issue number | 3 |
| DOIs | |
| State | Published - Mar 2005 |
Keywords
- Chattering
- Electro-hydraulic servo system
- Robustness
- Sliding mode control
- Time optimal
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