This paper investigates a control strategy which uses an identified reference model to produce appropriate chaotic and nonchaotic reference trajectories. Although it is possible to dispense with the reference model in...
详细信息
This paper investigates a control strategy which uses an identified reference model to produce appropriate chaotic and nonchaotic reference trajectories. Although it is possible to dispense with the reference model in many applications, it is often desirable to obtain a model of the system in order to guarantee that the reference signal is a genuine trajectory of the system to be controlled and to reduce the effects of transients and the control effort. The influence of measurement noise and the relation between the control effort and the dynamics of the uncontrolled system are also discussed. Examples which use the Duffing-Ueda system and a discrete reference model identified from input/output records with no a priori information, are included to illustrate the main points of the paper.
Since cranes usually possess double pendulum dynamics, the mass of the payload often changes and there are frequently lifting/lowering operations simultaneously. Moreover, most crane systems are driven by motors, whos...
详细信息
In designing controllers for complex dynamical systems there are needs that are not sufficiently addressed by conventional control theory. These relate mainly to the problem of environmental uncertainty and often call...
详细信息
In designing controllers for complex dynamical systems there are needs that are not sufficiently addressed by conventional control theory. These relate mainly to the problem of environmental uncertainty and often call for human-like decision making requiring the use of heuristic reasoning and learning experience. Learning is required complexity of a problem or the uncertainty thereof prevents a priori specification of a satisfactory solution. Such solutious are then only possible through accumulating information about the problem and using this information to dynamically generate an acceptable solution. Such systems can be referred to as intelligent controlsystems. In recent years, 'intelligent control' has come to embrace diverse methodologies combining conventional control theory and emergent techniques based on physiological metaphors, such as neural networks, fuzzy logic, artificial intelligence, genetic algorithms and a wide variety of search and optimisation techniques. The paper reviews aspects of these emergent techniques, in particular, fuzzy logic, neural networks and genetic algorithms that pertain to realisation of intelligent controlsystems. The fundamental concepts and design techniques of each paradigm are discussed, providing a compact reference for their application.
This paper presents an investigation into the performance evaluation issues involved in real-time parallel signal processing and control. Issues such as algorithm partitioning, mapping, interprocessor communication, g...
This paper presents an investigation into the performance evaluation issues involved in real-time parallel signal processing and control. Issues such as algorithm partitioning, mapping, interprocessor communication, granularity, regularity, compiler efficiency for numerical computation, and code optimization with several signal processing and control algorithms are investigated and presented. Several algorithms are considered and implemented on a number of uniprocessor and multiprocessor, homogeneous and heterogeneous, parallel architectures, A comparative performance evaluation of the architectures is made, demonstrating the critical problems encountered in real-time parallel signal processing and control. (C) 1997 Academic Press.
While the $$H_\infty $$ observer-based control has found widespread application in the literature for integer-order systems, researchers have shown less interest in addressing the same issue within the fractional-orde...
While the $$H_\infty $$ observer-based control has found widespread application in the literature for integer-order systems, researchers have shown less interest in addressing the same issue within the fractional-order framework. In this context, this study delves into the application of $$H_\infty $$ observer-based control for the Hadamard fractional-order system (HFOS) described by the Takagi–Sugeno fuzzy models (TSFM). Using Lyapunov approach and by employing a matrix decoupling technique, LMI based conditions ensuring the existence of an observer and controller, are proposed. To minimize the impact of disturbances on the controlled output, $$H_\infty $$ optimization technique is used. The validity of our approach is substantiated through an example, underscoring the robustness and reliability of our proposed findings.
LiDAR-camera extrinsic calibration (LCEC) is the core for data fusion in computer vision. Existing methods typically rely on customized calibration targets or fixed scene types, lacking the flexibility to handle varia...
详细信息
In Part 1 of this paper the concept of a bound for the output frequency response magnitude characteristics of nonlinear systems was proposed, and general calculation and analysis procedures were developed. In this, Pa...
详细信息
In Part 1 of this paper the concept of a bound for the output frequency response magnitude characteristics of nonlinear systems was proposed, and general calculation and analysis procedures were developed. In this, Part 2 of the paper, a new recursive algorithm for the computation of the gain bounds for the generalized frequency response functions of the polynomial nonlinear autoregressive model with exogenous input is proposed, and effective procedures for the practical computation of the new bound are developed. Simulated examples are included to verify the effectiveness of the proposed procedures.
This paper focuses on good practice in terms of pedagogies rather than technical content, but with reference to a controlengineering curriculum. A new lecturer will need to ask questions not only about the content of...
详细信息
This paper focuses on good practice in terms of pedagogies rather than technical content, but with reference to a controlengineering curriculum. A new lecturer will need to ask questions not only about the content of a course but also, how should that content be delivered? The paper presents arguments for a holistic or blended approach to student development and illustrates how that can be wrapped around technical learning outcomes. A core part of this approach is effective use of modern technologies (Rossiter, 2011). This paper provides a summary of good practice and an illustrative benchmark module.
The author looks at the history of automaticcontrol in four main periods as follows: early control up to 1900; the pre-classical period 1900-1940; the classical period 1935-1960; and modem control post 1955. This art...
详细信息
The author looks at the history of automaticcontrol in four main periods as follows: early control up to 1900; the pre-classical period 1900-1940; the classical period 1935-1960; and modem control post 1955. This article is concerned with the first three of the above; other articles in this issue deal with the more recent period.
A generic supervisory systems architecture is presented for control of two different types of systems;medical systems and industrial systems. It is structured in a hierarchical manner, consisting of a basic-level fuzz...
详细信息
A generic supervisory systems architecture is presented for control of two different types of systems;medical systems and industrial systems. It is structured in a hierarchical manner, consisting of a basic-level fuzzy logic controller supervised by a higher level decision-maker, which employs fuzzy logic theory to represent the human expertise used in supervising the plant including both the controller and the process. The supervisory level tasks consist of tuning, generating control rules, fault detection and diagnosis, together with an alarm and monitoring system. The paper is concerned more with the fault detection and diagnosis methods incorporated in the system. Simulation results for a medical system application are presented.
暂无评论