煤炭浮沉试验自动操作系统的研究

针对煤炭浮沉试验的现状，结合煤炭浮沉试验方法，探讨了一种新型煤炭浮沉试验自动操作装置。该装置的机械部分主要包括耐腐蚀泵、不锈钢电磁阀、振动器、搅拌器等；自动控制部分采用技术成熟、可靠的可编程控制器PLC。利用该装置可实现煤炭浮沉试验的自动操作，提高试验的自动化水平。为了达到模拟人工试验进而代替人工试验的目的，关键是寻找控制试验装置各控制部件的最优时间。

Research of automatic operation system of coal floating-and-sinking test

The paper, by using the methods of GB478-87, explored a new automatic operation device of the coal floating-sinking test based on its present conditions. The mechanical parts of the device mainly include non-corrosion pump,stainless electric-magnetic valves,vibrators and mixers etc. The PLC is used as its automatic control parts, which is ripe and reliable in technology. The device makes the operation automatically of coal floating-and-sinking test. In order to reach the goal of imitating and even replacing artificial test,it is the key to seek the optimal control time of the device's all control units.