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Sample and Hold Inputs Theory and Applications, and Fault Detection for SSCDS
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| 자료유형 | 학위논문 |
|---|---|
| 서명/저자사항 | Sample and Hold Inputs Theory and Applications, and Fault Detection for SSCDS. |
| 개인저자 | Wang, Yingxu. |
| 단체저자명 | Michigan State University. Mechanical Engineering - Doctor of Philosophy. |
| 발행사항 | [S.l.]: Michigan State University., 2019. |
| 발행사항 | Ann Arbor: ProQuest Dissertations & Theses, 2019. |
| 형태사항 | 113 p. |
| 기본자료 저록 | Dissertations Abstracts International 81-04B. Dissertation Abstract International |
| ISBN | 9781085665766 |
| 학위논문주기 | Thesis (Ph.D.)--Michigan State University, 2019. |
| 일반주기 |
Source: Dissertations Abstracts International, Volume: 81-04, Section: B.
Advisor: Zhu, George. |
| 이용제한사항 | This item must not be sold to any third party vendors. |
| 요약 | The disadvantages of non-minimum-phase (NMP) systems for control applications are well known. Prior research has shown that a NMP system can be discretized to an minimum-phase (MP) system using either a zero-order hold or square-pulse sample and hold input. First the research focused on the MP characteristics of the discrete-time system that obtained from a continuous-time single-input-single-output NMP system by using different sample and hold inputs. Two new sample and hold inputs (forward and backward triangular) are studied in addition to the square pulse. Numerical simulations were adopted for studying the MP property of the resulting discrete-time system as a function of sample and hold parameters. The simulation results show that it is possible to find a smaller sampling period that results in an MP discrete-time system using the proposed sample and hold inputs compared to zero-order hold. The q-Markov Cover system identification with pseudo-random binary signal (PRBS) was then used for a hardware-in-the-loop (HIL) simulation study. A resistor-capacitor filter was used to represent the implementation error of the sample and hold input due to unmodeled actuator dynamics. HIL simulation results show that the proposed sample and hold input scheme is robust to actuator modeling error. The MP properties of the discrete-time systems with three sample and hold inputs are compared. The results show that the forward triangle sample and hold input has the best performance due to its robustness to unmodeled actuator dynamics and the capability of retaining MP property of the discretized system at small sampling periods.Based on the analytical result, the advantages of using the SHIs for the single inverted pendulum through simulations and experiments were studied. In particular, it is shown that the performance of the stabilized closed-loop system can be improved by designing an dual-loop controller based on the MP discrete system obtained using the SHIs. Simulation results in the presence of Coulomb friction show that the additional controller reduces cart oscillations significantly |
| 일반주제명 | Mechanical engineering. Agriculture. Agricultural engineering. |
| 언어 | 영어 |
| 바로가기 | 
: 이 자료의 원문은 한국교육학술정보원에서 제공합니다. |
