1. Absolute acceleration feedback control of structures
- Author
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Lap-Loi Chung, Lai-Yun Wu, T.G. Jin, and C.S. Yeh
- Subjects
Acceleration ,Matrix (mathematics) ,Quadratic equation ,Computer simulation ,Control theory ,Control (management) ,Process (computing) ,Control engineering ,State (computer science) ,Accelerometer ,Mathematics - Abstract
Publisher Summary Direct absolute acceleration feedback control is considered to be unfeasible even though accelerometers are favorable sensors for measuring the dynamic structural responses from the viewpoint of measurement. Absolute acceleration feedback control becomes feasible when the feedback data is extended to cover the absolute accelerations of the previous time steps. Multi-step acceleration feedback control algorithm is derived through an optimization process such that a certain prescribed quadratic performance index is minimized. Control forces are simply generated from absolute acceleration information of the current and previous time steps multiplied by the pre-calculated optimal feedback gain matrix. The control effectiveness of the proposed control algorithm is verified through numerical simulation to be close to that of state feedback control algorithm. Simple on-line calculation and availability of accelerometers make the proposed control algorithm favorable to real-time control implementation.
- Published
- 1995
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