Output details

Partial pole placement in structures by the method of receptances: theory and experiments

Significance of output:

Pole placement is a way of designing feedback control systems, for example, to control vibrations on helicopters and spacecraft. Partial pole placement involves shifting the damping and natural frequencies of some modes (poles) while other poles remain unchanged. The multiple-input state feedback method proposed and applied in this paper is applicable, for the first time, to the most general case of non-collocated sensors and actuators. Experimental tests on (i) a lightweight composite beam with macro fibre composite actuators and sensors and (ii) a modular test structure in two configurations using electromagnetic actuators and piezoelectric accelerometers are presented. A significant advantage of the proposed method is revealed in the experiments, where the receptance is generalised to the transfer function between outputs and inputs of any measurable quantities so that actuator dynamics may be included .