Reduced-Order Observer Design for Servo System Using Duality to Discrete-Time Sliding-Surface Design
- Resource Type
- Periodical
- Authors
- Mehta, A. J.; Bandyopadhyay, B.; Inoue, A.
- Source
- IEEE Transactions on Industrial Electronics IEEE Trans. Ind. Electron. Industrial Electronics, IEEE Transactions on. 57(11):3793-3800 Nov, 2010
- Subject
- Power, Energy and Industry Applications
Signal Processing and Analysis
Communication, Networking and Broadcast Technologies
Servomechanisms
Sliding mode control
Design methodology
Observers
Control systems
Riccati equations
Laboratories
State feedback
Robust control
Permission
Duality between reduced order observer and sliding surface design
reduced order observer
servo system
variable structure systems
- Language
- ISSN
- 0278-0046
1557-9948
This paper presents a design method of a discrete-time reduced-order observer using the duality to discrete-time sliding-surface design. First, the duality between the coefficients of the discrete-time reduced-order observer and the sliding-surface design is established, and then, the design method for the observer using the Riccati equation is explained. A discrete-time sliding-mode controller based on the proposed observer is designed and tested on a laboratory-type experimental servo system. The results show the efficacy of the reduced-order observer designed by the duality concept.