Research Of Mnemonic Lifting Control System Based On Coal Shearer Test Model

With the mining and continuous improvement of mechanization and rapid development of modern automatic control technology, nowadays miner-less workface is the focus of the research, key technologies of miner-less workface include automatic lifting technology of coal shearer, self-positioning, auto-navigation technology of coal shearer and coal interface identification technology. Mnemonic lifting technology of coal shearer is one important part of the automatic lifting technology of coal shearer. For the disadvantage of the traditional manual operation method of coal shearer drums and other lifting methods, mnemonic lifting method is chosen in this paper, carrying out a pilot study and experiments on the test model of the coal shearer about this method. This research has got a certain achievements.The paper firstly expounds development trend and research condition of the coal shearer lifting technology at home and abroad. Through accessing to relevant information both at home and abroad, knows working principle of coal shearer and the lifting principle of drums of the coal shearer to lay the foundation of structure simplification and model set-up of real coal shearer; sets up the test model of mnemonic lifting system of coal shearer, analyzes the arms of the coal shearer test model and gives a mathematical description of test model and corresponding analysis of control algorithm; sets up the entire hardware platform of control system based on above analysis and gives a detailed analysis of the various parts of this system, the selection of sensors and electrical connections; programs the control system software part; gives a detailed analysis of the functions and principles of each software module; then analyzes the key issues solved during the process of software design; through hardware and software design, completes the entire control system design, produces two hardware printed circuit boards and carries out the entire system debugging and testing; summarizes the full text,induces the research content and the result,and makes the further forecast combined with existing problems,then points out that the mnemonic lifting technology of coal shearer will be worthy of further thoroughly study from now on.This thesis indicates that the mnemonic lifting technology of coal shearer can make a great progress by being combined with the development of embedded PC/104 computer technology and the application of advanced control theory and this technology can be realized in the future in the coal mining workface.