论文部分内容阅读
汽车驾驶室因噪声直接危害驾驶人员的身体健康 ,引起生理和心理上多种疾病 ,还会诱发交通事故 ,影响工作效率。我国运材汽车均为载重汽车 ,由于车辆本身和使用条件等方面的原因 ,驾驶室内噪声较大。本文针对我国运材生产中经常使用的两种车型驾驶室内噪声的调查为基础 ,进行有关的试验测试 ,并利用频谱和相干函数理论 ,建立了在多输入单输出情况下驾驶室内主要噪声源及试验系统模型。经过试验 ,对运材汽车驾驶室内噪声进行了评价 ,验证了所建立的系统模型的正确性 ,确定了驾驶室内噪声及其主要来源。
Car cab directly endanger the health of drivers due to noise, causing a variety of physical and psychological diseases, but also induce traffic accidents, affecting work efficiency. China’s transport vehicles are trucks, due to the vehicle itself and the reasons for the use of conditions, the cab noise. Based on the investigation of the cab noise in two kinds of vehicles commonly used in the transportation material production of our country, this paper carries out the related test and test, and establishes the main noise source and the main noise source in the cab under the condition of multiple input and single output by using spectrum and coherence function theory Experimental system model. After the test, the noise in the cab of Yun-Ti automobile was evaluated, the correctness of the established system model was verified, and the noise in the cabin and its main source were confirmed.