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| Content Provider | IET Digital Library |
|---|---|
| Author | Ma, Teng Wang, Bin Zhang, Zhe Ai, Bo |
| Abstract | In this study, the stability analysis and controller design of a hydropower unit's governing system (HUGS) were studied based on a Takagi–Sugeno (T–S) fuzzy model and constant sampled-data control. First, according to the T–S fuzzy theory, the non-linear Francis hydro-turbine governing system under rigid water hammer is linearised and then the approximate linear system was obtained. Second, a fuzzy sampled-data controller was designed in the case of periodic sampling, and the closed-loop sampling system was discretised. After constructing the Lyapunov function and using the forward difference method, the stabilisation condition was given with less conservatism in a symmetrical linear matrix inequality form. Finally, the numerical simulation results showed that under four different sampling periods, the HUGS can quickly achieve stability and that it has different stability performance. In addition, the superiority of the controller was verified in comparison with traditional proportional–integral–derivative control and fuzzy control techniques. |
| Starting Page | 3508 |
| Ending Page | 3517 |
| Page Count | 10 |
| ISSN | 17521416 |
| Volume Number | 14 |
| e-ISSN | 17521424 |
| Issue Number | Issue 17, Dec (2020) |
| Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/iet-rpg/14/17 |
| Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/10.1049/iet-rpg.2020.0660 |
| Journal | IET Renewable Power Generation |
| Publisher Date | 2020-12-18 |
| Access Restriction | Open |
| Rights Holder | © The Institution of Engineering and Technology |
| Subject Keyword | Algebra Approximate Linear System Closed Loop System Closed-loop Sampling System Combinatorial Mathematics Constant Sampled-data Control Control System Analysis Control System Synthesis Delay Different Sampling Periods Different Stability Performance Discrete Control System Francis Hydropower Unit Fuzzy Control Fuzzy Control Technique Fuzzy Sampled-data Controller Fuzzy Set Theory HUGS Hydraulic Turbines Linear Matrix Inequalities Linear System Lyapunov Method Nonlinear Control System Nonlinear Francis Hydro-turbine Governing System Optimal Control Periodic Sampling Sampled Data System Stability Stability Analysis Stability in Control Theory Symmetrical Linear Matrix Inequality Form Synthesis Method Takagi–Sugeno Fuzzy Sampled-data Model-based Less Conservative Stability Criterion Three-term Control Time Varying System Traditional Proportional–integral–derivative Control T–S Fuzzy Theory |
| Content Type | Text |
| Resource Type | Article |
| Subject | Renewable Energy, Sustainability and the Environment |
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