Model following control system (MFCS) can output general signals following the desired ones. In this paper, a method of nonlinear model following control system will be extended to be a nonlinear system in discrete...
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Model following control system (MFCS) can output general signals following the desired ones. In this paper, a method of nonlinear model following control system will be extended to be a nonlinear system in discrete time. the nonlinear system studied in this paper has the property of norm constraint ‖f(v(t))‖≤α+β‖v(t)‖γ, where α≥0, β≥0, 0≤γ<1. In this case, a new criterion is proposed to ensure the internal states be stable.
this paper deals withthe evaluation of innovative e-learning materials that were created within the project "Exemplary developmental projects from industry for reinforcing the practical knowledge of future mecha...
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ISBN:
(纸本)9781910810927
this paper deals withthe evaluation of innovative e-learning materials that were created within the project "Exemplary developmental projects from industry for reinforcing the practical knowledge of future mechanical engineers" at the University of West Bohemia in Pilsen (UWB) at the Faculty of Mechanical Engineering (FME) in the Department of Machine design (DMD). Under this project, e-learning study materials were created based on themes that are common in technical practice and at the same time interesting, necessary and useful for educating students at FME. this entire project was divided into 10 basic design areas, which all contain one or more design projects. Individual design projects were worked on by academics in cooperation with students, and also with help from industry practitioners, so that everything corresponds with modern norms and standards currently used in real industrial companies. E-learning materials were created for all the design projects. these materials have been implemented into the teaching of several subjects, not only in DMD for which they were originally intended, but due to the extensiveness of these materials they are also used for teaching in other departments at FME. All e-learning materials consist of several important parts, including a 3-dimensional (3D) computer-aideddesign (CAD) model, calculation, drawings, technical description, etc. All these parts are necessary for describing the structure of a machine or device in detail and for explaining all their features and functions. After completing the project and implementing the new e-learning materials into teaching, it was necessary to evaluate the success of the project and its impact on the quality and methods of teaching. Questionnaires were created and given to students for completion. We were also interested in the opinions of practitioners from the engineering industry, so we asked employees of companies we cooperate with to evaluate the study materials. Using all the
the objective of this research is to investigate the potential of quantum computing to address the complex optimization challenges in energy systems. the fundamental ideas underpinning quantum computing, as well as it...
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the research paper is directed to the cutting calculation problem concerning the CAD for windows and doors. By introducing an expert system technology to this problem, this research applies Inference mechanism to ...
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the research paper is directed to the cutting calculation problem concerning the CAD for windows and doors. By introducing an expert system technology to this problem, this research applies Inference mechanism to automatically generate the cutting calculation, thereby achieving intelligence computerization for windows and doors cutting. Meanwhile, this research proposes to introduce a neural expert system into the application module for selecting windows and door model pattern. Consequently, the selection of window and door patterns becomes more reasonable and the advantages of neural network expert system are fully played out. this paper provides a method by which the artificial intelligence technology is introduced to the exploitation of the CAD system for windows and doors, thereby significantly enhancing the intellectualization of efficiency of the CAD system.
the AR technology of artificial intelligence solves the visual, tactile, auditory, taste and other physical information that is difficult to experience within a certain time and space in the real world. through comput...
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the objective of this paper is to introduce analytical models for accurate prediction of failure probabilities of existing shield wires and to recommend a time window for wire replacement at an acceptable failure thre...
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ISBN:
(纸本)9781934325216
the objective of this paper is to introduce analytical models for accurate prediction of failure probabilities of existing shield wires and to recommend a time window for wire replacement at an acceptable failure threshold. Ductile and strength tests results and failures records of shield wires were examined to determine the trend of wires deteriorations as they age. Since most of failures occurred due to ice accretion during winter storms and wire deteriorations due to corrosion;an ice accretion model and corrosion models were used to predicts wire tensions and wire deteriorations during service life. To calculate the probability of failures, the strength and cross section area were assumed to be random variables modeled using normal distributions. the wire tensions due to ice accretions were calculated from the last 50 years of recorded winter storms. Anderson-Darling goodness of fit test was used to determine the best statistical model to fit the maximum annual wire tensions. the Gumbel distribution passes the test and was found to give stable results over wide range of tested conditions. Limit state function was developed and a computer program was written to determine the failure probabilities of shield wires using Rackwitz-Fiessler algorithm.
In this paper we present a method for detecting rounds and fillets in engineering sketches and drawings, and automatically generating a 3D model of the corresponding object, with rounds and fillets applied. this metho...
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ISBN:
(纸本)9783642135439
In this paper we present a method for detecting rounds and fillets in engineering sketches and drawings, and automatically generating a 3D model of the corresponding object, with rounds and fillets applied. this method is useful both as a component of computer-aided sketching tools and in determining design intent-although rounds and fillets are common in engineering parts, they often conceal design intent, which is more easily determined from the object's underlying polyhedral skeleton.
We describe our experiences with deploying a vehicular Internet access service on public transit buses. Our system, called WiRover, has been running on these buses since April 2010 for about 18 months till date provid...
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Grain size and its uniformity affect the deposition quality and efficiency of metal sputtering targets. Hot upsetting with flat dies has been applied to reduce the grain size however its uniformity is poor. Dead metal...
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