Syudy On Active Control For The Regenerative Suspension-brake System

As the energy crisis and environmental pollution problems getting serious, people’srequirements of the energy saving and environmental protection of auto industry areincreasing. In the background of the third generation of battery technology not breakingthrough the bottleneck, open up new energy regeneration or feedback approach is aneffective means of current automobile industry technology’s capability. Recently, thebrake energy recovery research has made great progress, but research can be applied tothe suspension fed massive vehicle and road conditions complex type vehicle load isrelatively less. And the energy feedback device’s add is bound to have effects on theoriginal body of the vehicle suspension structure, layout, dynamic performance andother factors, so how to improve vehicle fuel economy, while taking into account andimproving vehicle ride comfort, handling and stability, such as dynamic performance,have become a hot and efforts to resolve the difficulties of everyone’s attention.Currently the major mainstream automobile manufacturers are conducting researchrelated to design strategies for energy management control and braking control strategy.This paper presents that a new structure can be fed suspension, leaf springs on thetruck parallel accumulator, the uneven road vibration excitation converted and stored aspotential energy required for braking pressure. Braking systems in parallel partialpressure piping, pressure reaches the upper limit control law based on the high-pressuregas into the engine intake system booster or direct release; insufficient pressure from theaccumulator pressure energy priorities supplemental braking, engine power as anauxiliary. This is not only regenerative energy-saving design, leaf spring suspensionsystem also provides additional damping characteristics conducive to attenuate vibrationenergy and improves ride comfort. Therefore, the actual energy regenerative strategyalso suspension damping control strategy, the algorithm and semi-active suspension aresimilar but more complicated, so it is the research focus and difficulty.Based on the project funded by the National Natural Science Foundation of China(50905091), and the brothers on the basis of existing research results, for heavy goodsvehicles suspension feeder can brake system designed amplification mechanism and its simulation modeling and analysis using ADAMS, the establishment of a road vehicleincentive model and nonlinear models, the introduction of a suspension Lord, from theideological integrated control strategy, carried out ceiling, designed to shed integratedcontroller, and the establishment of the ceiling in the Matlab/Simulink environment, toshed integrated control simulation diagram suspension, has been integrated controlsuspension and passive suspension displacement body acceleration and tire comparisonchart, the results show: this control method not only can effectively improve vehicleride comfort but also handling stability. Vehicle provides a new way of energy saving,active vibration control for suspension and a new method of the active controlsuspension vibration and it has a good level of theory and market value.