1517 2.DYNAMICS ANALYSIS AND COORDINATED CONTROL OF THE ENTIRE SYSTEM 2.1 Configuration and Optimization of Distributed Systems Aiming at the problem of dynamic tension control and multi driving point power collaborative distribution, in the process of conveyor belt starting and braking, under the condition of long distance and large lifting height, combined with the characteristics of large lifting height and long distance of main inclined shaft roadway in Kekegai coal mine, the distributed driving technology is adopted from the aspects of equipment safety and reliability, research and development cost, roadway support construction and operation and maintenance convenience. Table 1 compares the key parameters of head centralized drive and distributed drive, as well as their advantages and disadvantages. Table 1-Head centralized and distributed driver comparison Solution Head-focused Drive A Head-focused Drive B Distributed Drive Transport volume (t/h) 5500 5500 5500 Bandwidth (m) 2.2 2 2 Belt speed (m/s) 6.3 7.1 5.6 Drive power (kW) 4×4500 4×4500 3×3150+3×3150 Advantages Simple system, easy to manage, large potential for production increase Simple system, easy to manage, low investment Mature technology, lowest investment Disadvantages High belt strength and investment requirements Reduced lifespan of conveyor belts and idlers at high belt speeds Increased workload in central transfer stations, and substantial mining construction requirements Figure 1 shows the difference in tension distribution between the two. The calculation results show that the technology optimizes the whole machine and intermediate drive design, and the maximum tension of the conveyor is reduced by 36.7%. Figure 1-Tension comparison between head centralized drive and distributed drive 2.2 Dynamic Characteristics of Complete Machine under Complex Working Conditions To ensure the stability of the super-high-power long-distance belt conveyor during start-up, stop and operation, a dynamic model of the whole machine based on the improved three element viscoelastic model is established, and a special dynamic analysis software is developed. The dynamic characteristics of no-load, full load start-up and stop, and operation conditions are analyzed, by using this software and foreign commercial software(Mark Alspaugh, 2022). The control curve and design parameters are optimized, and the whole process of material loading and unloading is simulated. The results show that the system has a smooth start stop speed curve, stable tension control, and balanced force distribution on the drum. The drum force curve under full load starting condition is shown in Figure 2, and the soft start stop speed curve is
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