Search Result of "Peter Heinrich Meckl"

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ที่มา:วิทยาสารเกษตรศาสตร์ สาขา วิทยาศาสตร์

หัวเรื่อง:ไม่มีชื่อไทย (ชื่ออังกฤษ : Integrating an Input Shaper with a Quantitative-Feedback-Theory-Based Controller to Effectively Reduce Residual Vibration in Slewing of a Two-Staged Pendulum with Uncertain

ผู้เขียน:Imgดร.วิทิต ฉัตรรัตนกุลชัย, รองศาสตราจารย์, Imgภูวดล โพธิ์แดง, ImgPeter Heinrich Meckl



In this study, a control system was proposed consisting of an outside-of-the-loop input shaper and a feedback controller based on quantitative feedback theory. The input shaper convolves the reference input with a properly designed impulse sequence to generate a shaped reference input that reduces the excitation in the system’s modal frequencies, resulting in less residual vibration. Recently, the input shaper has been placed inside-of-the-loop to attenuate noise-induced vibration under hard nonlinearity. However, this setting cannot reduce the vibrations induced from plant-input and plant-output disturbances as well as from plant model uncertainty. A controller was designed to meet various disturbance rejection specifications, when plant uncertainty is also taken into account. The input shaper was then designed using the closed-loop natural frequencies and damping. Together, the proposed control system could effectively reduce residual vibrations especially those induced from disturbances and uncertainty. The control system was applied to a two-staged pendulum where all masses were lumped together to create a simplified model used in controller design, and the inertia forces of both links and payload were treated as plant-input disturbance. Simulation and experimental results indicated that the control system was very effective in residual vibration reduction in the presence of uncertainty and disturbances.

Article Info
Agriculture and Natural Resources -- formerly Kasetsart Journal (Natural Science), Volume 048, Issue 1, Jan 14 - Feb 14, Page 150 - 166 |  PDF |  Page