| The multifunctional lube oil washing machine is a high-pressure washing device for cleaning the engine and its accessories.The equipment relies on the motor oil pump to supply high-pressure oil,the overflow valve adjusts the system pressure,the servo proportional valve controls the flow,and holds a high-pressure liquid column at the front of the nozzle to clean the workpiece.Through the switching of the electric ball valve,it can be cleaned in both directions.The online pollution degree detector monitors the oil pollution.The filtration system removes contaminants.The equipment adopts closed-loop control method through PLC control,sensor feedback.and servo proportional valve executionClassical control theory is used to mathematically model the closed-loop system,and BODE criterion is used to analyze the stability of the system.Then use the AMESim software based on modern control theory to study the pressure closed-loop system,analyze the dynamic characteristics and steady-state characteristics of the system,study the feasibility scheme of the large-span pressure control system,study the system pressure,PID,electrical system performance and The effect of the accumulator on the control perfonnance of the system.The heating and energy consumption analysis of the hydraulic system based on AMESim was carried out.The temperature closed-loop system was modeled and analyzed.The temperature curve of the system was obtained.The influence of temperature sensor performance and cooler power on the system temperature control performance was analyzed.Analyze and model the energy consumption system,get the energy consumption curve,compare the energy consumption of multiple schemes,and optimize the energy consumption of the servo proportional valve scheme.The electrical system is designed and the performance of the electrical system is studied.The results show that it is feasible to use servo proportional valves for large-span,high-quality pressure control with flow.The energy consumption of the servo proportional valve scheme is very large.The proportional relief valve is used as the control element of the system pressure,which can effectively save energy.The control method that uses the combination of proportional pump and servo proportional valve has good energy saving effect.The quality of the electrical system depends on the overall performance,which is usually determined by the weakest link in the system.Electrical sampling time can reach 10ms,which meets the requirements of the hydraulic system. |
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