CAJ | 학술논문

针对某中型载货车在35km/h~40km/h车速附近出现的驾驶室异常共振问题，进行了道路试验，采集驾驶室内与驾驶室悬置周边位置处的振动加速度信号。通过驾驶员总加权加速度均方根值对载货车的乘坐舒适性进行了客观评价，结果表明驾驶室振动异常，乘坐舒适性能很差；通过悬架、驾驶室悬置传递函数的计算与分析，发现驾驶室后左悬置对车桥传递至驾驶室的低频振动起到极大的放大作用，是驾驶室内产生异常共振的主要原因。更换驾驶室后左悬置后，该车速段内的异常共振问题已消除。
침대모중형재화차재35km/h~40km/h차속부근출현적가사실이상공진문제，진행료도로시험，채집가사실내여가사실현치주변위치처적진동가속도신호。통과가사원총가권가속도균방근치대재화차적승좌서괄성진행료객관평개，결과표명가사실진동이상，승좌서괄성능흔차；통과현가、가사실현치전체함수적계산여분석，발현가사실후좌현치대차교전체지가사실적저빈진동기도겁대적방대작용，시가사실내산생이상공진적주요원인。경환가사실후좌현치후，해차속단내적이상공진문제이소제。
The road tests were carried out to analyze the cab abnormal resonance phenomenon of one middle truck under random road excitation which emerged around 35km/h~40km/h. The vibration acceleration signals of cab and cab mounting system were acquired. Through the calculation of driver general weighted acceleration root mean square, the ride comfort of the truck was evaluated subjectively. It was shown from the results that the cab vibrated abnormally with worse ride comfort. Through the calculation and analysis of suspension and cab mounting transmission functions, it is determined that the rear left cab mounting enlarged the low frequency vibration, and is the factor of cab resonance. After replacing the rear left cab mounting, the abnormal resonance of cab around 35km/h~40km/h was eliminated.