The Research On Boom Potential Energy Regeneration Of Hybrid Excavator

The energy regeneration technology is an important direction of the hydraulic excavator energy saving research. With the successful application of hybrid power technology in the automobile vehicle, it has laid the foundation for construction machinery to promote the hybrid power technology. The hybrid power excavator boom potential energy regeneration is still in its infancy at present. In order to recover the boom potential energy of the hybrid power excavator, this dissertation researches from the aspects of program design, control method, parameter match and experimental design, which can provide reference for the design of the hybrid power excavator potential energy regeneration system.The domestic and foreign energy saving research status of hydraulic excavators and the existing hybrid power excavator potential energy regeneration system are analyzed. Based on the hydraulic accumulator and super capacitor, the composite potential energy recycling program is designed. According to the actual working condition of the excavator, it proposes single energy regeneration and double energy regeneration modes, and gives the appropriate control methods.Established and derived the mathematical model of the boom potential recycling programs, the mechanical-electro-hydraulic co-simulation model of the potential energy regeneration system is built up by using the Pro/e, ADAMS, and AMESim software. The method of multi-objective optimization is used to match the parameters of the hybrid power excavator potential energy regeneration system for the first time. The comparison analysis of simulation model between the situation with parameters or not shows that the matching effect works well, and the rate of potential regeneration is89.97%.The demand torque of the motor is controlled segmentedly by using the matched parameters. The classic PID control is used to optimize the segmentary control strategy and simulated respectively. The results of simulation show the rate of potential energy regeneration are91.14%and95.18%, which indicate that the strategy of the motor demand torque control is effective.Experimental prototype data and simulation data are analyzed contrastively, which verify the correctness of the simulation model. The potential energy regeneration system test platform is built up with the existing experimental conditions. The data collection procedure used to the experimental test, is programmed in the Labview programming environment. Analyzed the test data, it proves that the potential energy regeneration system and the control method is feasible, and conclude that the rate of the potential energy regeneration platform is47.69%.