求助，急需将论文摘要翻译成英文！请英语高手帮忙，要完全翻译！不要机器翻译，非常感谢！

MATLAB Applications in Signal Processing

This paper discusses the MATLAB in signal processing. The focus of this paper is to use the contents of MATLAB programming and visualization tools to generate the necessary signal, then its sampling, spectral analysis, and finally then restore it into original signals and draw the relevant graph. Through the above process to achieve grasp the basic concepts of digital signal processing, basic theory and basic methods, learn how to use MATLAB for signal analysis and processing purposes. MATLAB from MathWorks has introduced a set of powerful scientific and engineering calculation software, which not only has to Matrix-based features powerful mathematical calculations and analysis, but also the visual and graphic rich performance features and easy programming capacity. MATLAB to matrix operations, numerical analysis, graphics, programming and other functions together organically, as we provide a strong signal of calculation and programming tools.

Keywords: MATALBsignalprocessing

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Coupler buffering device is and the important connection parts among the motorcycle, the car and the vehicle. Besides the use for connection, it still can be used to keep a certain distance between vehicles, to relax vehicle longitudinal force between the impact between vehicles, etc. Coupler buffering device have certain elastic deformation under longitudinal force, and can restrain relative displacement between vehicles, therefore, it is called the elastic constraints between vehicles.

The method of using Simulink diagram is used to analyze the vehicle longitudinal force in this paper. In the use of Simulink, we must grasp the use of look-up table, manual switching, output port, multiplication, gain, peace, integrator function , and the use of oscilloscope skillfully to use graphics, adjust the waveform parameter required size, records of experimental data, etc. Make full use of Matlab and Simulink the same data to conduct necessary data processing. For import data to Matlab, it is needed to grasp the simple calculation, complete data calculation and order statistics.

In the simulation of Coupler buffering device, this paper will put body movement of 1M1T emu train and 2M1T into the working condition, braking condition and idle line condition, and the concrete parameters of three conditions is analyzed and discussed respectively. Because of the feature of coupler buffering device for flexibility, damping and absorbing the part of impact energy, the stiffness coefficient K and the damping coefficient C are discussed in the paper. The researches on rigidity coefficient K are divided into stiffness of non-equivalent set frictions and stiffness of equivalent set frictionsthe researches discuss the impact of the three-characteristic of buffering device to the producing of the longitudinal force.

For the working condition, braking condition and idle line condition, the paper also carries on the simulation analysis respectively. Under the same conditions, parameters, such as the speed, Itinerary of buffering device and coupler force, from the three conditions are compared. And the motor cars into 1M1T, 2M1T various groups are discussed, the characteristics of different groups and changes in vertical force are analyzed.

Keywords: Coupler buffering deviceDiagram methodStiffness coefficientDamping coefficient

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