The Research Of Large Time-Delay Skip Welght-fixed Leading System In Vertical Shaft

Research on load accuracy of skip weight-fixed loading system in vertical shaft, analysisthe effect of large time-delay and remaining coal flow during the gate close process, and otherdestabilizing factors on the accuracy of load in loading system. By way of combining theoryand experiment, proposed some control methods, solve the problem of actual load weight andthe settings do not matched, reduce the weighting error and improve the accuracy of load.Firstly, build up the model of weighing process, and using Matlab/simulink simulationtool simulate the process on computer. By improving the control method to ensure theaccuracy of the actual load weight to the settings, calculated the strobe closing amount ofadvance in different loading speeds.Secondly, design and construct the laboratory table of weight-fixed system. Includingmechanical design, sensor signal amplifier circuit board production, data collection andprocessing, PC computer and the realization of lower machine communication, PCmonitoring software design and so on. Provide experimental platform for following theorystudy.Finally, based on the theory of linear extraction of least square method and Smithpredictor control theory, put forward suitable control method for weight-fixed loading system,and verification of the control method by experiment. And then change the mechanicalstructure of laboratory table, collect large amounts of experimental data, and analysis andresearch this data, proposed suitable mechanical structure which can reduce the weightingerror of weight-fixed loading system.The subject proposed a series of measures to reduced the weighting error of weight-fixedloading system by simulation and experiment, greatly improves the weighting accuracy ofweight-fixed loading system, provide the basis for the design of skip weight-fixed loading system in vertical shaft.