Rail Vehicle Shock Absorber Based On The Er And Dsp Technology

The electro rheological(ER) technology is an advanced study with so much superior advantages and applications that it has been given much attention all over the word .The core of ER technology is ER fluid which viscous co-efficient changes rapidly, continuously and reversible under electronic field. Vehicle damper using ER fluid can produce continuous and controllable damping forces for Vehicle's best ride comfort and road holding, so many scientist focus on it. Today's researches are on control features on condition that vehicle's passive damper is replaced by ER damper operated by external energy source. The main tasks of the paper are described as follows:1. Research on ER fluidThe mechanism and variety of ER fluid are introduced in details; the function of various components and its effect are analyzed; all kinds of factors are discussed; the performance of feree is studied in the opinion of engineering.2. Research on ER fluid damperIntroduced the ER fluid damper's working principium, structure and characteristic, selected a kind for study, constructed mathematical model base on the analyses of the performance of force.3. Introduced the kinds of suspension, According to the Modern Controller Theory, constructing the Semi-Active suspension and Active suspension control equation, and make out the MATLAB program for emulation, by the emulation verify the mathematical model.4. The DSP'S structure, characteristic, abundant hardware resources and efficient code are introduced in detail; the control elementary diagram and system frame are given, designed the hardware circuit diagram, make out the program.