KEYWORDS: Control systems, Systems engineering, Analytical research, Telecommunications, Communication engineering, Systems modeling, Databases, Testing and analysis, Barium, Transponders
Aiming at the problems of backward test method, long test period and low test efficiency of communication-based train operation control system, the formalized generation method of CBTC (Communication Based Train Control) system engineering acceptance test sequence was studied. The first is to divide the test line into several test sections; the second is to analyze the constraints of the test cases and the characteristics of the test lines; the third is to design the matching algorithm and the connection algorithm, and to convert the constraints of the test cases and the characteristics of the lines into a formal language; It is to design test sequence generation software to generate several executable test sequences. Through the result analysis, the test sequence generated by this method meets the test requirements of the CBTC system, can cover all test cases, and greatly improves the test efficiency.
KEYWORDS: Calcium, Control systems design, Raw materials, Photonic integrated circuits, Human-machine interfaces, Frequency converters, Control systems, Automatic control, Electrodes, Frequency conversion
There are some technical problems in the preparation of mixed charge for calcium carbide furnace, such as cumbersome operation, inaccurate ratio and uneven mixing. Based on the analysis of burden proportioning calculation, working principle of batching equipment and batching operation requirements, this paper designs a control system based on frequency converter, PLC and HMI by using frequency converter frequency modulation and master-slave following method, which well meets the requirements of accurate preparation, mixing uniformity and multi batch operation of calcium carbide furnace mixture. The practical application in the production field shows that the designed control system has the advantages of accurate burden ratio, simple operation, high production efficiency and reliability.
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