广西大学学报（自然科学版）
廣西大學學報（自然科學版）
엄서대학학보（자연과학판）
JOURNAL OF GUANGXI UNIVERSITY （NATURAL SCIENCE EDITION）
2014年
5期
962-970
,共9页
驾驶室悬置%空气弹簧%特性试验%模糊控制器%八自由度%仿真
駕駛室懸置%空氣彈簧%特性試驗%模糊控製器%八自由度%倣真
가사실현치%공기탄황%특성시험%모호공제기%팔자유도%방진
cab suspension%air spring%characteristic test%fuzzy controller%8 freedoms%simulation
为改善车辆平顺性，在考虑汽车驾驶室的实际位置、半浮式和全浮式驾驶室悬置的特点后，选取了全浮式空气悬置作为研究对象，并通过弹簧特性试验研究了空气弹簧静、动特性曲线；运用Matlab/Simulink建立了八自由度驾驶室空气悬置模型，以滤波白噪声生成路面输入，仿真分析了汽车在B级路面下车速20 m/s、25 m/s及路面有凸块的三种行驶状况的振动；进而设计了模糊控制器，对驾驶室前后空气悬置采取主动控制后的状况进行了仿真分析；以驾驶员、驾驶室的振动响应及悬置动挠度为指标，评价车辆平顺性的变化程度，以此来研究主动空气悬置在改善车辆平顺性方面的效果。三种行驶状况的仿真结果表明，对驾驶室前后空气悬置采取主动控制后，驾驶员加速度均方根值分别减小了8.39％、9.32％、8.55％，驾驶室质心加速度均方根值分别减小了9.64％、11.85％、9.78％，驾驶室俯仰角加速度均方根值分别减小了20.15％、10.14％、20.11％，提高了乘坐的舒适性。
為改善車輛平順性，在攷慮汽車駕駛室的實際位置、半浮式和全浮式駕駛室懸置的特點後，選取瞭全浮式空氣懸置作為研究對象，併通過彈簧特性試驗研究瞭空氣彈簧靜、動特性麯線；運用Matlab/Simulink建立瞭八自由度駕駛室空氣懸置模型，以濾波白譟聲生成路麵輸入，倣真分析瞭汽車在B級路麵下車速20 m/s、25 m/s及路麵有凸塊的三種行駛狀況的振動；進而設計瞭模糊控製器，對駕駛室前後空氣懸置採取主動控製後的狀況進行瞭倣真分析；以駕駛員、駕駛室的振動響應及懸置動撓度為指標，評價車輛平順性的變化程度，以此來研究主動空氣懸置在改善車輛平順性方麵的效果。三種行駛狀況的倣真結果錶明，對駕駛室前後空氣懸置採取主動控製後，駕駛員加速度均方根值分彆減小瞭8.39％、9.32％、8.55％，駕駛室質心加速度均方根值分彆減小瞭9.64％、11.85％、9.78％，駕駛室俯仰角加速度均方根值分彆減小瞭20.15％、10.14％、20.11％，提高瞭乘坐的舒適性。
위개선차량평순성，재고필기차가사실적실제위치、반부식화전부식가사실현치적특점후，선취료전부식공기현치작위연구대상，병통과탄황특성시험연구료공기탄황정、동특성곡선；운용Matlab/Simulink건립료팔자유도가사실공기현치모형，이려파백조성생성로면수입，방진분석료기차재B급로면하차속20 m/s、25 m/s급로면유철괴적삼충행사상황적진동；진이설계료모호공제기，대가사실전후공기현치채취주동공제후적상황진행료방진분석；이가사원、가사실적진동향응급현치동뇨도위지표，평개차량평순성적변화정도，이차래연구주동공기현치재개선차량평순성방면적효과。삼충행사상황적방진결과표명，대가사실전후공기현치채취주동공제후，가사원가속도균방근치분별감소료8.39％、9.32％、8.55％，가사실질심가속도균방근치분별감소료9.64％、11.85％、9.78％，가사실부앙각가속도균방근치분별감소료20.15％、10.14％、20.11％，제고료승좌적서괄성。
In order to improve the ride comfort of a vehicle, the full floating air suspension was a-dopted by considering the actual location of cab in commercial vehicle and the characteristics of semi and full floating suspension.The stiffness characteristic test was done to study the static and dynamic characteristic curve of air spring.A cab air suspension with 8 freedoms is established in Matlab/Simulink.And filter white noise is taken as road excitation to simulate the vibration of commercial vehicle driving in B grade road.Two fuzzy controllers to control the front and rear cab suspension was designed to simulate passive and active suspension.The vibration response of driver and cab and the suspension dynamic deflection were chosen as targets to evaluate the ride comfort of vehicle in active system has been improved or not when compared to passive system.The simulation was car-ried out to study the advantages of active air suspension in ride comfort improvement.The simulation results show that the vibration response of driver and cab is effectively reduced.The root mean square values of driver's acceleration are reduced by about 8.39%, 9.32%, 8.55%, and cab's ac-celeration by about 9.64%, 11.85%, 9.78%, and pitching angle acceleration by about 20.15%, 10.14%, 20.11%, suggesting that the ride comfort is improved.
