| Multiple actuator synchronization control is the important technology and difficult problem of the fluid transmission and control. Accuracy of synchronization control size to some extent determines the performance advantages and disadvantages of multi-element device or system. Copper anode synchronous lifting equipment is an important part of the preparation of copper anodes for electrolytic refining unit, used to receive or complete block of copper anode lifting work, it has loads of features. So requesting synchronization control of high precision to ensure its actions stability and reliability. The hydraulic synchronous control of itself is a certain degree of difficulty, and the lifting device loads much larger, proning to eccentric load, which is difficult to maintain synchronization with accuracy. Therefore, this paper has a good theoretical and practical engineering significance. The paper has analyzed the copper anodes synchronization lifting installment principle of work, according to the actual technological requirement and the production demand, designed has used the copper anodes synchronization lifting installment mechanism which the hydraulic cylinder actuated. The device uses two hydraulic cylinders combined with four steering column structure, lifting weight of6tons.The paper describes the evolution of electro-hydraulic proportional control technology, domestic and foreign research on synchronous control of hydraulic cylinder and the research at home and abroad. Using the battery solution proportional control to design the synchronized lifting installment hydraulic control system, this system pressure is16Mpa, the current capacity is30L/min, using a battery solution proportion flow valve achievement to control the part. Introducing the synchronization control precision concept, theoretically has analyzed the influence synchronization control precision factor,establishing the lifting installment mathematical model. Applying simulink simulation software for the simulation. Simulation results show that the synchronized lifting devices synchronize with less precision, anti-jamming ability problems, such as weak, poor performance, which require the use of appropriate control strategies to improve system performance.Papers based on the analysis of various control strategies, combining characteristics of synchronous lifting device, using model reference adaptive control to the device of electro-hydraulic proportional control system.The paper has analyzed this control strategy feasibility and serviceability. A theoretical analysis on the model reference adaptive control strategy of the electro-hydraulic proportional control system, establishing the mathematical model of the entire control system. According to the copper anodes production unit and synchronized lifting installment of the actual parameter, using the simulation software of Matlab Simulink to carry on the simulation and the research to the entire control system. The simulation result indicates that, this control system stability is good, system has achieved the steady state at1.5s, the system speed of response is quick, the responsing time is1.2s. The synchronization control precision is high, can reach0.05mm, enhancing the battery solution proportional control copper anodes synchronization lifting installment control performance, which has satisfied the copper anodes synchronization lifting control actual production request. |
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