Title :
A Hankel singular value approach for identification of low level dynamics in flexible structures
Author :
Gawronski, W. ; Hadaegh, F.Y. ; Scheid, R.E.
Author_Institution :
Jet Propulsion Lab., California Inst. of Technol., Pasadena, CA, USA
Abstract :
The intensity of dynamics in a flexible structure is characterized by its Hankel singular values. Low level dynamics may be caused by generic properties of a structure or by its actuator and sensor configurations. In the latter case, it is shown that the dynamics can significantly be amplified by small perturbations of actuator and/or sensor configurations. In the presented examples, the variations of sensor configuration of 0.05 or less caused an increase of Hankel singular values of order 1000. This approach is useful for model reduction and model order determination in the presence of noise
Keywords :
dynamics; identification; Hankel singular value; dynamics; flexible structures; identification; model order; model reduction; Actuators; Damping; Flexible structures; Laboratories; Noise measurement; Noise reduction; Propulsion; Reduced order systems; Sensor phenomena and characterization; Sensor systems;
Conference_Titel :
Decision and Control, 1990., Proceedings of the 29th IEEE Conference on
Conference_Location :
Honolulu, HI
DOI :
10.1109/CDC.1990.203461
