Boundary Control of a Flexible Manipulator Based on a High Order Disturbance Observer with Input Saturation
| Autor: | Zhengtao Wei, Ti Chen, Dongping Jin, Hao Wen, Junteng Ma |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
0209 industrial biotechnology
Partial differential equation Article Subject Spacetime Invariance principle Computer science Mechanical Engineering Hyperbolic function 02 engineering and technology Geotechnical Engineering and Engineering Geology Condensed Matter Physics 01 natural sciences lcsh:QC1-999 020901 industrial engineering & automation Mechanics of Materials Control theory 0103 physical sciences Disturbance observer 010301 acoustics lcsh:Physics Civil and Structural Engineering |
| Zdroj: | Shock and Vibration, Vol 2018 (2018) |
| ISSN: | 1875-9203 1070-9622 |
| DOI: | 10.1155/2018/2086424 |
| Popis: | This paper studies a new boundary control strategy for a flexible manipulator subject to unknown fast time-varying disturbances. The flexible manipulator essentially is an infinite dimensional continuum. Hence, a continuous function of space and time can be employed to describe the position of such a distributed parameter structure, the motion of which can be described by partial differential equations (PDEs). To cope with fast time-varying external disturbances, a high order disturbance observer is adopted. A control strategy based on such a disturbance observer is proposed for the rest-rest maneuvering of the flexible manipulator. Moreover, a smooth hyperbolic function is included in the controller to satisfy the requirement of input saturation. The stability of the boundary control is analyzed using LaSalle’s invariance principle. Finally, the performance of the presented boundary controller is verified through comparison with that of employing a constant disturbance observer via numerical simulations. |
| Databáze: | OpenAIRE |
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