Second-order state estimation experiments using acceleration measurementsThe estimation of dynamic states for feedback control of structural systems using second-order differential equations and acceleration measurements is described. The formulation of the observer model, and the design of the observer gains is discussed in detail. It is shown the second-order observer is highly stable because the stability constraints on the observer gains are model independent. The limitation of the proposed observer is the need for 'nearly' collocated actuators and accelerometers. Experimental results using a control-structure interaction testbed are presented that show the second-order observer provided more stability than a Kalman filter estimator without decreasing closed-loop performance.
Document ID
19920053040
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Belvin, W. K. (NASA Langley Research Center Hampton, VA, United States)