Research on sand temperature control of sand mixing tank of 3D printing equipment
A scheme is given to add a heater to the mixing tank of the 3D printing equipment to con-trol the temperature of the mixed sand.The heater heats the tank body of the mixed sand tank,and the temperature of the tank body increases,so that the temperature of the mixed sand increases,so as to achieve the purpose of controlling the temperature of the mixed sand.The thermal analysis of the system was carried out,the transfer function form of each link was deduced,and the parameters of each trans-fer function were determined by combining theoretical calculation and system identification.Through sim-ulation,it is shown that PID control has better control accuracy than switch control,and the temperature of the mixed sand can fluctuate in the range of 3.1 ℃ when the raw sand temperature is disturbed.Finally,the experimental results verify the effect of switch control,which proves that the scheme pro-posed in this paper is feasible and the model established in this paper is in line with the actual situa-tion.
3D printingTemperature controlTransfer functionThermal analysisSimulation
万方数据
维普
