论文部分内容阅读
本文叙述了轮式拖拉机前挢动态特性的测试过程,由此推算出地面作用于前轮胎的真实外载,为轮式拖拉机总体动力学的研究、轮胎特性的研究和滚动阻力、侧向力的计算提了一定的依据。 文中提出了利用活塞式发动机的已知加速度曲线进行系统标定的方法,对加速度传感器的标定有一定的参考价值。 本试验应用快速富里叶变换(FFT)进行数字功率谱分析,以减少运算次数和提高运算精度。
This paper describes the testing process of the dynamic characteristics of wheeled tractor beforehand, and deduces the real external load acting on the front tires from the ground. It is the research on the overall dynamics of wheeled tractors, the research of tire characteristics and the rolling resistance, lateral force Calculated to provide a certain basis. In this paper, a method of system calibration based on the known acceleration curve of piston engine is proposed, which is of certain reference value to the calibration of accelerometer. This test uses fast Fourier transform (FFT) for digital power spectrum analysis to reduce the number of operations and improve the accuracy of the operation.