Machinery Design and Manufacture 

About: Machinery Design and Manufacture is an academic journal. The journal publishes majorly in the area(s): Finite element method & Software. Over the lifetime, 2081 publications have been published receiving 3110 citations.

Mobile robot path planning based on improved genetic algorithm

Abstract: It makes some improvements on the Genetic Algorithm based on the deficiencies of tra-ditional Genetic Algorithm used in the robot path planning,which is that the use of principle of Minkowshi to expand the obstacles,then to select real feasible region to initial population,which can improve the speed of evolution;the introduction of the concept of similarity in the selection operator,then to expand the type of parent,which can avoid local optimal solution quickly;and the application of the dynamic mutation probability in the crossover operator,which improves the quality of individual;the method is correct and ef-fective through the simulation,which proves the improved Genetic Algorithm can converge more quickly to the global optimal solution.

Research on coordinated simulation of robot arm based on MATLAB and ADAMS

Abstract: To improve the design efficiency of robot arm,a virtual simulation system was built by making full use of the virtual simulation technology First,a three-dimensional model of the robot arm with four-freedom was built in Solidworks software;and then,the model was imported into the dynamic simulation software Adams for kinematic and dynamic simulation;At last,through the interface modular part (Adams/control)of Matlab and Adams,robot arm control system was established by using simulink module of Matlab software and coordinated simulation of four-freedom was successfully implemented The simulation results indicate that the coordinated simulation system of the robot arm has preferable dynamic re-sponse characteristics and nicer locus-tracking ability

Investigation on correlation betwe en ECG indexes and driving fatigue

Abstract: Driving fatigue is an important cause Of traffic accidents,and it is important to evaluate the degree of driving fatigue by quantum parameters.In this paper,7ECG indexes are checked on their correla tion with driving fatigue intensity,so a s to f ind the effective parameter for driving fatigue assessment.The ECG data are collected from 16subjects under90minutes simulated driving operat ion,with for driving fatigue assessment the15minutes data at the beginning and end of the experiment are analyzed separ ately.is revealed that four ECG indexes are signif cantly related to the degree of driving fatigue.The standard deviation(SD)of RR intervals and the powervalue of Low Frequency(LF)of Heart Rate Variability(HRV)and the value of LF /HF increase ob-viously,while the power value of Hig h Frequency(HF)decreases markedly.It is suggested that these four ECG indexes can be used to evaluate the degree of driving fatigue quantificat ionally.

Calibration of binocular stereo-vision system

Abstract: The estimation of the fundamental matrix is a crucial issue in machine vision which is important matrix for stereo-vision and image motion analysis.While binocular vision system is calibrated,single camera projection matrix is decomposed into rotation matrix and translation vector with conventional means.The epipolar line equation of projection point and fundamental matrix are obtained via solution of anti-symmetric matrix,thus relative location of cameras is obtained

Mechanical analysis of wheel-soil interaction of lunar rover

Abstract: The structure of wheel and its mechanical behavior in soil is crucial to the performance of the whole lunar rover, and the knowledge of these is helpful to improve the design of the lunar rover. Based on the press-sinkage and shear model of the soil, this paper constructs the force balance equation of the wheel, analyses effect of the wheel's driving state and its structure parameters to the performance of the wheel, which is helpful to design a test-bed and improve the design of the wheel.