A pattern-recognition method for flatness defect based on CMAC neural network is proposed, and a flatness fuzzy controller based on the pattern-recognition results is designed in this paper. Pattern-recognition and controller are designed into a single unit, in which CMAC recognizes the membership grade relative to six basic modes of common flatness defect and realizes the seeking function of t...

Abstract: In this paper, an approach to design and implement a real-time system based on a RISC microcontroller dedicated to a DC motor speed control, is proposed. A polynomial RST controller based on the flatness property of linear systems is implemented in C/C++ embedded programming language. The flatness property is used in order to design a robust controller with high performance in terms o...

Nacelle-based lidar systems are offering a good opportunity for new wind turbine control strategies, since inflowing wind information can be used in the controller. The benefits of lidar-assisted collective pitch feedforward control have been presented over the last years and was successfully demonstrated in several field testings, latest results see [1, 2]. This controller yields an improved r...

Abstract: In recent years, the increasing penetration level of wind energy into power systems has brought new issues and challenges. One of the main concerns is the issue of dynamic response capability during outer disturbance conditions, especially the fault-tolerance capability during asymmetrical faults. In order to improve the fault-tolerance and dynamic response capability under asymmetric...

Closed-loop flow control is gaining more and more interest in the last few years. Whereas most of the published results are based on simulation studies, this work explores the synthesis of black-box model based closed-loop controllers for separated, wall-bounded shear flows in experiments. In this paper we compare a linear robust controller with a flatness based approach. To consider both the u...

In this contribution, we present a constructive method to derive flat sampled-data models for continuous-time systems through an implicit Euler-discretization. We show how the model can be used subsequently flatness-based controller design, and illustrate our results with well-known planar VTOL aircraft example.

This paper deals with the thickness and flatness control problem in heavy plate mills. After a short description of the industrial plant the first part of the paper is concerned with a new control strategy for the improvement of the thickness homogeneity over the plate length. This model–based concept takes into account valuable information from previous passes which, together with accurate mat...