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Electrically excited brushless synchronous motor is a new AC motor, which has a great difference with ordinary AC motor in electromagnetic design. Based on the electromagnetic relation of electrically excited brushless synchronous machine, in this paper the design method is studied and the electromagnetic field of electrically excited brushless synchronous machine is analyzed by finite element analysis...
This paper is based on the dynamics characteristics of the air-cylinder; develop the air-cylinder piston wear ring axial deflection with LuGre model, then use the MATLAB to simulate the axial deflection and get the relevance between axial deflection and cycles. Meanwhile, set up the air-cylinder piston durability experimental platform, achieve a large number of data and compared with simulation data,...
This paper presents a broadband Ka-band single balanced monolithic mixer with double intermediate frequency (IF) output configuration. Implemented on the AlGaAs/GaAs substrate, the mixer is produced by the 0.15μm low-niose pHEMT technology. The mixer covers radio frequency (RF)/local oscillator (LO) operating frequency range from 28 to 40 GHz and IF signal bandwidth from DC to 5 GHz. Conversion gain...
In order to solve the problem of the new airport passenger throughput forecast, a new forecast model which based on airport groups is put forward in this paper. In this model, the competition ability of airports and the important factors which affect passengers travel choice are introduced into it. Then by constructing passenger utility function, the new regional airport passenger throughput can be...
This paper presents a gain-varying UIO (unknown input observer) method for actuator FDI (fault detection and isolation) problems. A novel residual scheme together with a piecewise threshold and a moving horizon threshold is proposed. This design methodology is applied to a nonlinear F16 system with polynomial coefficient models, where the F16 plant and UIOs may use different aerodynamics coefficient...
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