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This paper proposes an on-line maximum efficiency control method for a dual-motor drive system. By using the on-line feedback signals and doing simple computations, the output torque of each motor can be determined. Then, a maximum efficiency operation of the whole system can be achieved. The efficiency of the whole system, which includes motor efficiency and inverter efficiency, is investigated....
In this paper, the cloud services optimization problem considering energy consumption cost is discussed. The queue model is presented for customer request service on data center. Since the server energy utility is based on the CPU core frequency, the novel trade-off optimization model between services revenue and energy loss cost is proposed in the paper, including allocating the dynamic CPU frequency...
The paper is to resolve the robustness problem of the camera self-calibration progress based on Kruppa equation. By simplifying the Kruppa equations and defining the target function firstly, then obtaining the initial values by three linear independent translational motion of the camera secondly, we refine the initial values through optimizing the nonlinear target function. At last, extensive simulations...
Machinability evaluation and examination is fundamental for process planning while an effective weight method is one of the primary concerns of machinability evaluation and examination in process planning. In this paper, a new improved approach for calculating the weights of extracted indices in machinability evaluation and examination in process planning is proposed based on the conventional Delphi...
The task of evaluation for students' learning achievement needs to consider several aspects about students' learning performance such as practices, examinations, and observations. Traditionally, such evaluation usually calculates a final score by means of weighted average method after awards numerical scores, and then determines a grade according to a set of crisp established criteria. However, this...
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