Title :
An experimental verification of the reduced order transfer function of a piezoelectric laminate beam
Author :
Moheimani, S. O Reza
Author_Institution :
Dept. of Electr. & Comput. Eng., Newcastle Univ., NSW, Australia
Abstract :
Piezoelectric materials are finding increasing applications in active vibration control of structures. A widely used modelling technique for piezoelectric laminates is the assumed modes method which results in an infinite-dimensional model of the composite structure. For control design purposes, such a model is simplified by removing higher frequency modes which lie out of the bandwidth of interest. Truncation can considerably perturb the in-band zeros of the truncated model. The paper suggests a method of minimizing the effect of the removed higher order modes on the low frequency dynamics of the truncated model of a piezoelectric laminated beam by adding a zero frequency term to the low order model of the laminate. Simulations and experimental results are presented
Keywords :
control system synthesis; flexible structures; multidimensional systems; piezoelectric actuators; piezoelectric materials; piezoelectric transducers; reduced order systems; transfer functions; vibration control; active vibration control; assumed modes method; composite structure; higher order modes; in-band zeros; infinite-dimensional model; low frequency dynamics; modelling technique; piezoelectric laminate beam; reduced order transfer function; truncated model; Bandwidth; Flexible structures; Frequency; Laminates; Piezoelectric actuators; Piezoelectric materials; Sensor phenomena and characterization; Structural beams; Transfer functions; Vibration control;
Conference_Titel :
Decision and Control, 1999. Proceedings of the 38th IEEE Conference on
Conference_Location :
Phoenix, AZ
Print_ISBN :
0-7803-5250-5
DOI :
10.1109/CDC.1999.831318
