Application Of Digital Hydraulic Transformer In Circuit Of Hydraulic Elevator

The research of this topic is the application of digital hydraulic transformer in the hydraulic lift elevator circuit.It is a new energy-saving control system proposed under the research goal of reducing the installed power and energy consumption of hydraulic elevators.The system uses bladder type accumulators commonly used in hydraulic systems as energy storage components and uses digital hydraulic transformers as energy conversion devices to reduce installed power and energy consumption.This paper mainly introduces the theoretical analysis,numerical calculation,virtual simulation and experimental bench construction of the hydraulic elevator elevator based on digital hydraulic transformer.This paper first proposes a new hydraulic secondary component-digital hydraulic transformer DHT(Digital Hydraulic Transformer),and describes the circuit design,system parameters and control system working principle of hydraulic elevator based on digital hydraulic transformer.The physical model of the hydraulic system is built in the AMESim system modeling software,and the digital signal processing model is built in MATLAB/Simulink,so that the two are co-simulated to analyze the energy consumption of the system and the characteristics of the accumulator,and the system speed and load performance are investigated.Parameters and so on.Finally,the construction of the hydraulic system experimental platform was explained,including the selection of the valve in the hydraulic elevator system prototype,the design of the valve block,and the selection of hydraulic cylinders and accumulators,and then conducted experimental testing and research.Comparing the theoretical analysis results,this paper concludes that the study of hydraulic elevator elevator control system based on digital hydraulic transformer and accumulator has energy-saving effect,and puts forward suggestions and prospects for further research work.