| When the vehicle is in the face of rapid change or complex conditions,the anti rollover performance and the adhesion of the vehicle are reduced,which results in the occurrence of vehicle rollover accidents.The suspension system is connected with the wheel frame structure is the key point to improve the vehicle performance.Among them,the hydraulic interconnected suspension can effectively improve the anti rollover performance of the vehicle by connecting the hydraulic devices of each wheel and coordinating the interaction force between the suspension.Therefore,it has been widely concerned by scholars at home and abroad.A new type of hydraulic interconnected energy-regeneration suspension system is proposed in this paper,which can improve the dynamic performance of the whole vehicle and recover the vibration energy of the suspension.Compared with the passive interconnected suspension,the hydraulic interconnected energy regeneration suspension structure adopts the hydraulic motor to replace the damping valve,The hydraulic rectification bridge is used to rectify the pipeline.On this basis,a constant current control feed circuit is designed.On the one hand,it can be used to recover and store the suspension vibration energy.On the other hand,the constant current value also can be changed to improve the dynamic performance of the whole vehicle.Firstly,this paper introduces the structure and principle of hydraulic interconnected energy-regeneration suspension interconnection,and constant current control circuit structure and principle of energy feedback,and analyzing the vibration energy recovery potential,laying the theoretical foundation for the design of the hydraulic interconnected energy-regeneration suspension structure.Secondly,using AMESim and MATLAB simulation,the model of the half vehicle and the whole vehicle is established.On this basis,through the simulation analysis of the suspension's the stability,the ride comfort and the energy feedback characteristics under different constant current values of the feedback circuit,considering the dynamic performance and feed energy characteristics of the hydraulic interconnected energyregeneration suspension,the constant current value of the optimal performance is determined.Thirdly,the traditional passive hydraulic interconnected suspension and the control of the hydraulic interconnected energy-regeneration suspension without adding constant current circuit are compared in this paper,carrying out the simulation and analysis of the dynamic performance and the feed energy performance of the hydraulic interconnected energy-regeneration suspension system under the optimum condition of the comprehensive performance,verifying the rationality of the design of the hydraulic interconnected energyregeneration suspension.Finally,the hydraulic interconnected energy-regeneration suspension prototype is designed to installed on the vehicle of bench test,test results show that the hydraulic interconnected energy-regeneration suspension is set at the optimum current value under the condition of the vehicle performance compared to the passive hydraulically interconnected suspension has declined slightly,and has good regenerative characteristic,consistent with the simulation results lay a theoretical foundation and practical experience for the research of vehicle application and control on hydraulic interconnected energy-regeneration suspension. |
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