Title :
Experimental verification of saturation reducing, zero vibration command shapers
Author :
Robertson, Michael J.
Author_Institution :
Weapons & Syst. Eng. Dept., United States Naval Acad., Annapolis, MD, USA
Abstract :
Command shapers are used to create inputs that will move flexible systems without residual vibration. Originally developed for linear systems, command shapers use superposition of the inputs to cancel vibration and control the system response. Nonlinearities in the system degrade the performance of traditional command shapers. The presence of ldquohardrdquo nonlinearities such as actuator saturation, distort the desired commands before they reach the plant. Command shapers that avoid saturating the actuators, thus allowing the desired command to reach the plant in the original form, have been developed for a mass under PD control. These shapers are easier to compute than previously shown results. Simulations and experiments verify the efficacy of the new shapers.
Keywords :
PD control; control nonlinearities; linear systems; vibration control; PD control; experimental verification; flexible systems; linear systems; saturation reducing; system nonlinearities; system response; zero vibration command shapers; Actuators; Adaptive control; Control systems; Degradation; Equations; Linear systems; Oscillators; PD control; Shape control; Vibration control;
Conference_Titel :
American Control Conference, 2009. ACC '09.
Conference_Location :
St. Louis, MO
Print_ISBN :
978-1-4244-4523-3
Electronic_ISBN :
0743-1619
DOI :
10.1109/ACC.2009.5160438