Title :
Frequency-domain design of tension observers and feedback controllers with compensation
Author_Institution :
Kun Shan Univ. of Technol., Yun Kung City, Taiwan
Abstract :
The dynamics of a web transport system are coupled and interactive among spans of web and rolls/rollers. As the process speed or variation of the speed is high, system friction and inertia of rotation of rolls could cause problems in implementation of observer techniques for tension estimation and control. In the author´s previous study (see IEEE International Conference on Industrial Electronics, Control and Instrumentation, Denver, Colorado, USA (2001)), an observer-based tension feedback controller with friction and inertia compensation was proposed. However, the gains of observer and controller were determined based on the trial-and-error approach. This paper continues the author´s previous study and presents an analytical approach for the gain design of observers in the time domain but design of controllers in the frequency domain. The linearization and decentralization techniques are implemented. Design of tension observers and feedback controllers with friction and inertia compensation is studied. Approaches for the gain design are discussed, and summarized procedures are given. The proposed analytical approach for design of tension observers and feedback controllers has been proven to be adequate by experiment.
Keywords :
angular velocity control; control system synthesis; digital control; digital signal processing chips; feedback; frequency-domain synthesis; friction; mechanical variables control; observers; process control; time-domain analysis; winding (process); compensation; decentralization techniques; feedback controllers; frequency-domain design; friction compensation; inertia compensation; linearization; observer; observer-based tension feedback controller; process speed; rolls rotation inertia; rolls/rollers; tension observers; trial-and-error approach; web transport system dynamics; Acceleration; Adaptive control; Angular velocity control; Cities and towns; Control systems; Frequency domain analysis; Friction; Prototypes; Shafts; Time domain analysis;
Conference_Titel :
IECON 02 [Industrial Electronics Society, IEEE 2002 28th Annual Conference of the]
Print_ISBN :
0-7803-7474-6
DOI :
10.1109/IECON.2002.1185519