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By reasonably predigesting the characteristics of the subminiature rotorcraft, a model for a subminiature rotorcraft is established and the linear time-invariant attitude dynamics with physical parameter of the subminiature rotorcraft at hover is obtained. A subspace-based state space system identification method and analysis of model uncertainty is applied to the model of rotorcraft. At last, the...
The theory of connection has been used to solve many problems in engineering. economics, and in management; in this paper, firstly, the theory of connection is introduced. Secondly, a new toolbox of functions for modeling and simulation is presented. Thirdly, the theory is used to solve a planning and scheduling problem with the help of the toolbox of functions. The scope of this paper is limited...
When designing the portable pipe thread shaping machine, we adopt the non-shaft decelerator and the working mode including thread chaser rotating and pipe shaft feeding, which can machine nonlinear round pipe thread. We have also built the mathematical modeling of the optimized design for the decelerator and obtained the optimal parameters after finding its solution with optimal toolbox of Matlab...
Summary form only given. The problem of electric energy quality, despite of its long-term history, continues to be of current importance. On the basis of many years' studies it is possible to establish that the facts of deterioration of electric energy quality take place in network systems of practically all purposes and kinds of voltage. The reason of proceeding deterioration of electric energy quality...
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