Recent additions to Analog HDL specifications, the ieee 1076.1 VHDL-AMS language standard, have raised the question as to whether the new additions provide sufficient capability for controlsystemdesign. control syst...
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Recent additions to Analog HDL specifications, the ieee 1076.1 VHDL-AMS language standard, have raised the question as to whether the new additions provide sufficient capability for controlsystemdesign. controlsystems design is typically performed using signal flow based CAE packages. This paper describes the interface requirements between these packages and VHDL-AMS. Important issues concerning simulation control, model interface definitions and user interfaces are presented. The intent is to foster discussion and hopefully coordination between the controlsystemdesign package vendors and the vendors of packages that support Analog HDLs.
This paper is devoted to identification and control of the moving velocity of an autonomous vehicle and of the position and velocity of its steering angle. Trajectory tracking is also dealt with by adapting a simple b...
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This paper is devoted to identification and control of the moving velocity of an autonomous vehicle and of the position and velocity of its steering angle. Trajectory tracking is also dealt with by adapting a simple but powerful linearization method.
A Matlab toolkit for finding periodic modes in relay controlsystems is described which has an excellent GUI and graphical facilities, and allows the user to analyse complex behaviours such as multi-pulse oscillations...
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A Matlab toolkit for finding periodic modes in relay controlsystems is described which has an excellent GUI and graphical facilities, and allows the user to analyse complex behaviours such as multi-pulse oscillations. Graphical and analytical tools for finding the parameters of the limit cycles, their stability and waveforms are provided.
A classical controlsystemdesign program for Bode plot loop shaping is presented. The design philosophy attempts to enforce the integration of a consistent and feasible specification with a classical design methodolo...
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A classical controlsystemdesign program for Bode plot loop shaping is presented. The design philosophy attempts to enforce the integration of a consistent and feasible specification with a classical design methodology. The design is divided into different categories for which suitable design procedures are provided by comparison of the specified and actual performance of the system. A number of tools for design evaluation, compensator tradeoff assessment, saturation and cost of feedback measures are included.
The problems of designing mechatronic systems (e.g. heterogeneous system components and their design methods, complexity) cause the need for an open, integrated design environment. This paper details the process-orien...
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The problems of designing mechatronic systems (e.g. heterogeneous system components and their design methods, complexity) cause the need for an open, integrated design environment. This paper details the process-oriented approach of the software environment CAMeL (computer-aided Mechatronics Laboratory) to the integration of different tools and methods. Characteristic concepts and implementation features of experiments in this "laboratory in the computer" are presented. An example from the field of vehicle dynamics (vehicle convoy control) demonstrates typical experiments in the modelling, analysis and synthesis phases of the design cycle of mechatronic systems.
In this paper we describe a computational approach to the optimal output feedback control of multi-model systems by means of a unique constant output feedback matrix. Extension of the method to output feedback control...
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In this paper we describe a computational approach to the optimal output feedback control of multi-model systems by means of a unique constant output feedback matrix. Extension of the method to output feedback control of multi-model periodic systems is also presented. The power of the proposed approach is illustrated by the simultaneous stabilization and optimization of a helicopter multi-model.
Computational chains which 'remember' that a computation has already been performed and its results are available for further use have been implemented using special classes of Matlab containers. A simple vers...
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Computational chains which 'remember' that a computation has already been performed and its results are available for further use have been implemented using special classes of Matlab containers. A simple version management mechanism keeps track of any changes made to containers in the chain, and supports storage and retrieval of design data. Computational chains can be used as a basis for a more sophisticated version of management mechanism for maintaining a complete design-history database. Advantages of the computational chains become more apparent as the complexity of the work undertaken with them increases, so in this paper we describe quite a complex 'case study', which we think is a fairly typical of part of an industrial controlsystem analysis. It is based on the use of a multivariable Smith predictor for a multivariable plant which contains time delays.
controlsystemdesign problems are generally multiobjective, in that they require several, generally conflicting requirements to be simultaneously met. One procedure for multiobjective computer-aidedcontrolsystem de...
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controlsystemdesign problems are generally multiobjective, in that they require several, generally conflicting requirements to be simultaneously met. One procedure for multiobjective computer-aidedcontrolsystemdesign is the method of inequalities (MOI). In this paper, the MOI is combined with an H/sub /spl infin//-optimization loop-shaping design procedure in a mixed-optimization approach which designs for both robustness and explicit closed-loop performance. In this approach, the MOI is used to design the parameters of the weighting functions required by H/sub /spl infin//-optimization design techniques. This mixed-optimization approach has been incorporated into a MATLAB-based interactive multiobjective computer-aidedcontrolsystemdesign environment.
A knowledge-based approach to H/sup /spl infin// computer-aidedcontrolsystemdesign is considered. The system is made up of a knowledge-based expert system and a learning system. The knowledge structure comprising a...
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A knowledge-based approach to H/sup /spl infin// computer-aidedcontrolsystemdesign is considered. The system is made up of a knowledge-based expert system and a learning system. The knowledge structure comprising a design knowledge base, a general knowledge base and a meta-knowledge base is proposed to facilitate learning. Two different learning strategies, learning through critic and learning-from-discovery, are considered for refining the design knowledge base.
A simple approach for robust integrated design of multibody systems (MBS) with decentralized control structure is proposed. The basic design concept is to use optimal trade-off relations between the given bounds of di...
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A simple approach for robust integrated design of multibody systems (MBS) with decentralized control structure is proposed. The basic design concept is to use optimal trade-off relations between the given bounds of disturbances and the control force limits. The proposed criterion enables a decomposition of the overall design problem into a hierarchical sequence of design problems for the subsystems: mechanics, actuators, sensors, and controls. Several examples of two-, three-, and six-degree-of-freedom rigid MBS have been considered in order to verify the viability of the proposed design concepts.
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