In this paper an application of genetic algorithms for on-line multi-objective optimisation is considered. Two different multi-objective evolutionary computational techniques are implemented for optimal selection of g...
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In this paper an application of genetic algorithms for on-line multi-objective optimisation is considered. Two different multi-objective evolutionary computational techniques are implemented for optimal selection of gas turbine engine real-time model structure. The real engine data was used for identification and optimisation of the engine model parameters. The results of genetic algorithm application for engine model on-line optimisation are discussed.
The main characteristic of the walking robots is that they are able to move away on not arranged, horizontal and rough terrain. The movement of the walking robots can be divided in two modes: - under condition of the ...
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The main characteristic of the walking robots is that they are able to move away on not arranged, horizontal and rough terrain. The movement of the walking robots can be divided in two modes: - under condition of the static stability, - under condition of the dynamic stability. The loss of static or quasi-static stability may be produced in two cases, namely: - the vertical projection of the gravity center is out of support polygon, - one or more tangential components of reaction forces from support points are greater than the friction forces. The movement of the walking robot under dynamical stability conditions may be realized when the forward average speed is greater than a certain limit. In the work are analyzed the possibilities of determination of the limit conditions for the stable displacement of the quadrupedal walking robots.
The problem of robust output feedback stabilization is studied. The new robust stability LMI condition including guaranteed cost and the respective simple control design procedure is developed. Though the proposed con...
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Assembly and disassembly tasks are examples of "unfriendly" operations for humans. This paper presents research efforts in order to improve the operations of mobile structures for difficult environments. The...
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The problem of robust output feedback stabilization is studied. The new robust stability LMI condition including guaranteed cost and the respective simple control design procedure is developed. Though the proposed con...
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The problem of robust output feedback stabilization is studied. The new robust stability LMI condition including guaranteed cost and the respective simple control design procedure is developed. Though the proposed condition is sufficient, it is supposed not to be overly conservative. To reduce the conservatism parameter-dependent Lyapunov function is employed and an extra degree of freedom is included by using previous results of (Oliveira et al., 1999) and introducing other additional slack matrix and scalar parameters. The example is given to analyse and compare the obtained results with other ones.
The current paper presents an overview of a general architecture that provides remote access to industrial plants. In this paper the components of the architecture are described in detail, focusing on the key element ...
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The current paper presents an overview of a general architecture that provides remote access to industrial plants. In this paper the components of the architecture are described in detail, focusing on the key element of the architecture, which is the Application Server. This architecture has been applied to a case study consisting of a manufacturing cell to provide users located anywhere on the Internet remote access to the system under control.
Assembly and disassembly tasks are examples of "unfriendly" operations for humans. This paper presents research efforts in order to improve the operations of mobile structures for difficult environments. The...
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Assembly and disassembly tasks are examples of "unfriendly" operations for humans. This paper presents research efforts in order to improve the operations of mobile structures for difficult environments. The operation of autonomous mobile robots in a real-world unstructured environment requires consideration of multiple issues. The controller must be able to operate under conditions of imprecision and uncertainty (e.g. prior knowledge about the environment is incomplete, uncertain, and approximate, the dynamics of real-world environments is complex and unpredictable). To cope with these difficulties, the controller must be able to respond reactively to unforeseen events as soon as they are perceived.
When the process uncertainty size increases, even linear minimum phase systems must sacrifice desirable aggressive feedback control benefits to avoid an excessive 'cost of feedback', while preserving the robus...
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Tracking feedback control trade-offs increase dangerously with arbitrarily large uncertainties in the process mode!. This is shown by the bounds in the QFT domain. In this context, the paper develops a theory on the c...
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Software testing is a very important phase for software project process. It is a very difficult job for a software manager to allocate optimally the financial budget to a software project during testing. This article ...
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Software testing is a very important phase for software project process. It is a very difficult job for a software manager to allocate optimally the financial budget to a software project during testing. This article considers the problem of optimal allocation of the software testing cost. There exist several models focused on the development of software costs measuring the number of software errors remaining in the software during testing. The purpose of this paper is to use these models to formulate the optimization problems of resource allocation: Minimization of the total number of software errors remaining in the system;On the condition of assuming that a software project consists of some independent modules, the presented approach extends previous works by defining new goal functions and extending the primary assumption and precondition.
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