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- W2332315462 abstract "This paper discusses the design of a tendon vibration control system for a flexible beam hanged vertically, to investigate the feasibility of the tendon control system for a cantilever beam-like flexible space structure. A continuous body, such as a beam, has an infinite number of vibration modes, and it is impossible to consider all of them for the control system design. Therefore, the control design must be based on a reduced order model with a finite degree of freedom set up through the mode truncation. This incurs the instability of the closed loop system due to the effects of the neglected vibration modes, i.e., the residual modes. This phenomenon is called the spillover, and it is one of the essential problems in the controller design. The controller should be designed such that the stability of the total system may be guaranteed. First, the DVFB (Direct Velocity Feedback) is applied. This feeds back the rate sensor signal located at the point of the actuator and stabilizes the whole system like a passive damper. However, the performance of the controller is not satisfactory in the case of the single-input single-output system. Next, in order to attain a high performance controller, a state feedback controller based on a reduced order model is applied, i.e., the HAC (High Authority Control), which results in a spillover instability of the whole system. The spillover instability is caused mainly by the very low damping of the residual modes. Considering this fact, a hierarchical controller called the LAC/HAC (Low Authority Control/High Authority Control) is applied, consisting of the DVFB (LAC) for the damping augmentation of the residual modes and HAC. As a result, the closed-loop system becomes stable and high performance is achieved." @default.
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- W2332315462 date "1989-01-01" @default.
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- W2332315462 title "An approach to the design of a tendon vibration control system for flexible beams." @default.
- W2332315462 doi "https://doi.org/10.1299/kikaic.55.1345" @default.
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