MULTI-TIME-SCALE TERMINAL CONTROL OF MOTOR AXIS ANGULAR VELOCITY

Control Techniques for Multi-axis Real-time Dynamic Substructuring

Real-time substructuring is a novel hybrid method for the dynamic testing of complex engineering structures. This technique involves creating a hybrid model of the entire structure by combining an experimental test piece with the remainder of the structure being modelled numerically. The essence of this technique is to emulate the dynamic behaviour of the complete original structure by using re...

Optimal Control of Rigid Body Angular Velocity with Quadratic Cost

In this paper we consider the problem of obtaining optimal controllers which minimize a quadratic cost function for the rotational motion of a rigid body We are not concerned with the attitude of the body and consider only the evolution of the angular velocity as described by Euler s equations We obtain conditions which guarantee the existence of linear stabilizing optimal and suboptimal contro...

Time Varying Terminal Control

Two recent contributions to the literature (Kouvaritakis et al., 2000; Imsland et al., 2004) have shown how to use offline analysis to reduce online computation while enlarging the feasible regions of a control law. Both methods make use of an augmented system so this paper gives some proper discussion of their differences and similarities and in particular it gives new insight to the structure...

Control of integrated process networks - A multi-time scale perspective

In this paper, we analyze the dynamics of integrated process networks featuring large recycle streams and small purge streams. We consider a prototype network comprising of a reactor and a condenser, and, within the framework of singular perturbations, we establish that the dynamics of such a network exhibits three time scales. We describe a model reduction procedure which leads to an explicit ...

Lizarralde and Wen: Attitude Control without Angular Velocity Measurement