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In order to improve the structural performance of a five-axis gantry milling machine, a design idea of adopting parallel optimum design for key components and complete machine was investigated. Using CAE (Computer Aided Engineering) software, the finite element analysis model of the five-axis gantry milling machine key components and the complete machine were established. Then the static stiffness...
An electrical model of the 104 MHz radio frequency quadrupole (RFQ) accelerator at Peking University is introduced for RF design, based on which every crucial geometrical parameter is swept and selected carefully to improve the RF properties of the RFQ such as the intrinsic quality factor and shunt impedance for reducing its power consumption. Moreover, flatness tuning of the inter-electrodes voltage...
Kinematics and dynamics analysis is a common way to analyze a mechanical system. Through the analysis the fundamental characteristics of the mechanical system can be learned. Usually when people want to analyze a mechanical system, the first thing to do is to build a 3D model using certain 3D modeling software like UG, then to import the 3D model into some analysis software. Undoubtedly the process...
In this paper a global co-simulation methodology for concurrent/simultaneous analysis of passive and active analog/digital parts is proposed. An original power-signature concept is introduced to model high-speed digital modules temporal and spatial distribution of their power switching activity through specified chip partitions. Dedicated real-world NXP-Philips-Semiconductors active modules mounted...
An electromagnetic topology model used to analyse the High Power Microwave (HPM) effect on the different electrical components is presented. The model, whose foundation is linear coupling of aperture, emphasizes on the basic concept of electromagnetic topology, the abstract in the system analysis and two parameters: the polarization of electric field and the frequency of HPM. The algorithm of graph...
Iron losses generated in PM motors can be estimated by the coupling analysis system between magnetic filed simulator and control simulator. As a result, the eddy current losses in magnets in the benchmark motor with PWM driving become more than 10 times of the result with sinusoidal current.
The sliding transformer is the central part of the contactless inductive power transfer system that can realize the safe supply for mobile devices. The mathematical model of the sliding transformer is set up according to the coupling-circuit method. The compensation topologies and resonant frequency of the transfer system are analyzed contrastively, and the simulation experiment results are given...
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