PID×(<i>n</i>-2)/2 Stage PDA Cascade Robust Controllers

Pda Pda Pda

Maximally Robust Controllers for Multivariable

The set of all optimal controllers which maximize a robust stability radius for unstructured additive perturbations may be obtained using standard Hankel-norm approximation methods. These controllers guarantee robust stability for all perturbations which lie inside an open ball in the uncertainty space (say, of radius r1). Necessary and sufficient conditions are obtained for a perturbation lyin...

Robust Combination of Local Controllers

Finding solutions to high dimensional Markov Decision Processes (MDPs) is a difficult prob­ lem, especially in the presence of uncertainty or if the actions and time measurements are contin­ uous. Frequently this difficulty can be alleviated by the availability of problem-specific knowledge. For example, it may be relatively easy to design controllers that are good locally, though having no glo...

Robust nonlinear controllers for bioprocesses

In this paper, we propose to track a pre-described profile for the substrate concentration inside a continuous and well mixed bioreactor where a single bioreaction takes place. The proposed approach uses a high gain based controller in order to achieve the control objective. Two main characteristics of the proposed controller are worth to be mentioned. The first one lies in the fact that its ga...

A Fast and Robust License Plate Detection Algorithm Based on Two-stage Cascade AdaBoost

License plate detection (LPD) is one of the most important aspects of an automatic license plate recognition system. Although there have been some successful license plate recognition (LPR) methods in past decades, it is still a challenging problem because of the diversity of plate formats and outdoor illumination conditions in image acquisition. Because the accurate detection of license plates...