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Current generation of industrial MPC technology has two main disadvantages: 1) it is very costly to implement and to maintain an MPC system; 2) the performance in disturbance reduction is low. To solve these two problems, an adaptive MPC technology is introduced. It consists of three modules, a Control Module, an Identification Module and a Monitor Module. It can perform various steps of an MPC project...
Loom warp tension had a significant impact on the quality of fabric. In order to better control warp tension of rapier loom and prevent negative impacts on the quality of the fabric by reason of the excessive fluctuation. This paper took let-off system of SAURER400 rapier loom as experimental subject and adopted the simulation system of MATLAB to check up the advantage and disadvantage of three kinds...
Much attention has been paid recently to control-theoretic research on what is called feedback error learning (FEL). This paper provides yet another FEL control scheme, which generalizes existing ones in two points: i) It can treat a plant which is the product of known and unknown transfer matrices, and thereby reduces the number of parameters to be learned. ii) The response model is less restrictive,...
In this paper different approach of adaptation mechanism for fuzzy model reference learning control (FMRLC) method will be introduced. In contrast to original method the proposed procedure guarantees continuity of the fuzzy controller that in reward results in its smooth input-output behaviour (mapping) that eliminates undesirable abrupt changes in the control signal. Additionally, the proposed method...
In order to overcome the shortcomings of the nonlinear, time-delay and time-varying problems in the sewage treatment system based on biological fluidized bed (BFB), a modified T-S model fuzzy adaptive control system based on genetic algorithm (GA) is proposed. In the system, firstly using GA to optimize the membership functions, then reducing the dimension of fuzzy controller and simplifying the rules...
The real time tracking control of the rolling mill hydraulic position servo system is challenging due to the difficulty in obtaining an accurate mathematical model and the fact that different sources of uncertainties exist in the adjustment process. This paper presents a new real time inverse control scheme based on the adaptive PSO-IIR filters for this hydraulic APC process. The IIR filter, whose...
Model-based test is the very useful method to verify software safety. But the traditional technology of model-based test is not suitable for safety test of safety-critical software system. This paper addresses a new approach to perform safety test of safety-critical system based on safety automaton model, which can express safety properties. By using the method, we have developed an automatic testing...
This paper presents a Simulink implementation of the CMAC controller which was proposed by J.S. Albus. The controller was implemented using the MatlAB S-function so that it can be used by a control engineer working on the Simulink platform to study the feasibility of using the CMAC controller for his control application. Simulations with various quantization levels and learning rates were done for...
This work presents a model-based networked control structure with a feedback-based communication policy for spatially distributed processes modeled by highly-dissipative nonlinear PDEs with measurement sensors that transmit their data to the controller/actuators over a resource-constrained wireless sensor network. Initially, a finite-dimensional system that captures the slow dynamics of the PDE is...
The composition and control process of the ball and beam system are introduced in the paper, a mathematical model of ball and beam system based on Lagrange equations is set up with the application of the energy balance principle concerning dynamics, and on the base of analysis on such model, the design of a controller is worked out by utilizing the techniques of adaptive neural network. A reference...
Consider an interconnection of an unknown or partially known linear plant and a known linear stabilizing controller, and assume that some knowledge of the closed-loop system is available. Suppose, on the basis of that knowledge, the use of a new controller appears attractive. We provide analysis and introduce novel tests utilizing a limited amount of experimental and possibly noisy data obtained from...
This note is concerned with the model reference adaptive tracking problem of singular nonlinear systems with nonlinear parametrization where the nonlinearity in the parameters is convex or concave. Applying the standard coordinate transformation to the singular system to yield a reduced-order normal system, we convert the model reference adaptive tracking problem of singular system into the model...
The heat exchange of distilled water unit is a very complex process.The main steam pressure and temperature are tightly coupled with the pressure of raw water, temperature and flow in the circuit, and show non-linear relationship. There are two important parameters need to be controlled in water production process: conductivity and temperature of distilled water at the exit. This is a typical double...
In this paper the operation of a recently introduced novel version of the popular “Model Reference Adaptive Controller (MRAC)” is compared with that of a simple version of its possible traditional implementations. The “traditional implementations” normally use Lyapunov's 2nd (“direct”) method for adaptive tuning of the controllers' parameters. This method yields global asymptotic stability but its...
Quality of Service (QoS) is essential to data centers, which requires effective schemes to manage the flows among numerous servers. However, existing management techniques mainly focus on the QoS issues over Internet. This paper presents a Dynamic Feedback Control flow management model for data centers, called DFC, to achieve performance improvement and fault-tolerance. Based on the new model, mechanisms...
Traffic congestion has become a major problem in today's society. It may cause a great waste of material and human casualties. We think the fixed-time-state traffic light control scheme is one important reason. An intelligent traffic light control scheme is necessary in order to give a solution to this problem. The paper proposes a model to describe a road cross. In terms of dynamic and real-time...
To solve the shortcomings of traditional PID controller in dealing with disturbance rejection and robustness and the over-reliance on mathematical model of the controlled system, a model-free adaptive control algorithm based on linearization of partial format is proposed for discrete-time MIMO nonlinear systems. In this algorithm, nonlinear system is linearized by linearization of partial format method...
System evolution, such as addition or replacement of a component, may necessitate complete re-design. Such redesign may be needed to respect new or updated requirements. The models then have to be modified. In this paper, we present a procedure for reconfiguration of a discrete event system (DES) controller. Based on supervisory control theory (SCT), the objective of this work is to show how the SCT...
In this paper, an intelligent approach based on system-centric controller to develop a power system stabilizer is proposed. The approach discuss a methodology that designs a hybrid controller with two algorithms, one a Neural Network (NN) based controller with explicit neuro-identifier, and the other, an adaptive controller evolved from a Model Reference Adaptive Controller (MRAC). This design performs...
Electrically Controlled Rotor (ECR) is a new concept rotor system which was brought forward at the beginning of the 21st century. A control strategy of the ECR system is given out in this paper. An adaptive blade pitch control strategy of the ECR system is proposed, which is based on the adaptive filter with least mean aquare (LMS) algorithm. A secondary path on-line identification method with random...
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