Conditioning technique, a general anti-windup and bumpless transfer method
Automatica (Journal of IFAC)
A unified framework for the study of anti-windup designs
Automatica (Journal of IFAC)
Digital Control and Estimation: A Unified Approach
Digital Control and Estimation: A Unified Approach
Computer Controlled Systems: Theory and Design
Computer Controlled Systems: Theory and Design
Windup prevention for stable and unstable MIMO systems
International Journal of Systems Science - Special issue: Anti-windup
Discrete-time and sampled-data anti-windup synthesis: stability and performance
International Journal of Systems Science - Special issue: Anti-windup
Adaptive neural network control of uncertain nonlinear plants with input saturation
CCDC'09 Proceedings of the 21st annual international conference on Chinese Control and Decision Conference
Fuzzy PD system in adaptive control systems having input saturation
Control and Intelligent Systems
Brief Windup prevention for unstable systems
Automatica (Journal of IFAC)
Technical communique: VSS global performance improvement based on AW concepts
Automatica (Journal of IFAC)
A non-square sector condition and its application in deferred-action anti-windup compensator design
Automatica (Journal of IFAC)
| Hi-index | 22.15 |
This contribution distinguishes between two conceptually different windup phenomenons, namely controller and plant windup. Even in the absence of dynamic controller elements, saturating nonlinearities can trigger undesired oscillations. This effect is obviously due to inappropriate plant states, and is therefore called plant windup. Based on the frequency response of the linear part, a design aid for plant windup prevention is presented. It facilitates the search for suitable closed-loop dynamics, or for an appropriate additional dynamic network. State and disturbance observers add dynamic elements to the compensator, and in the presence of very slow or unstable controller modes, the well-known reset windup or integral windup occurs. This effect, the controller windup, is related to mismatched controller states. By feeding the limited plant input signal into the observer it is completely removed, so that the remaining effects of input saturation are solely attributable to plant windup. Various known windup prevention techniques can be explained within the presented framework.