Vehicle vibration presents challenges to a packaged product that is inevitable in any distribution environment. Typically products are tested in only a single, vertical axis; researchers have shown that there is energy in all six axes of motion. In this work, we study the recording methods of the six degrees of freedom (6DOF) motion of a transport vehicle. Using a co‐planar sensor array, three tri‐axial linear accelerometers and three angular rate sensors mounted in a L shape are used to calculate the rotational accelerations that occur in the back of a vehicle. Missing from prior work is a scientific study designed to determine the minimum sensor spacing necessary to accurately capture the yaw, pitch, and roll of transport vehicles. A sensitivity study is conducted to determine the effect of the misplacement and misorientation of sensors on the angular acceleration calculation. A laboratory study is used to determine the distance error begins to accumulate in the angular acceleration calculation in response to a sinusoidal input. A field study is conducted to calculate the rotational motions of a vehicle on a rough road. It is found that a mounting fixture is valuable in assuring the necessary sensor placement accuracy needed to accurately determine angular accelerations of a truck. Additionally, laboratory and field analysis show that as the sensor spacing location approaches the origin sensor, angular acceleration calculation error increases due to a loss in distinctiveness. It is desired for a close sensor mounting array, but there is a trade off between measurement accuracy and compactness of the recording array. A limit exists where the sensors can not be mounted in close proximity.

中文翻译：

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共面传感器间距对确定车辆角加速度的影响

车辆振动给包装产品带来了挑战，这在任何分销环境中都是不可避免的。通常，产品仅在单个垂直轴上进行测试；研究人员表明，所有六个运动轴都具有能量。在这项工作中，我们研究运输车辆的六自由度（6DOF）运动的记录方法。使用共面传感器阵列，三个三轴线性加速度计和三个安装在L型中的角速度传感器形状用于计算发生在车辆后部的旋转加速度。先前的工作缺少一项旨在确定准确捕获运输车辆的偏航，俯仰和横滚所需的最小传感器间距的科学研究。进行了敏感性研究，以确定传感器的位置错误和方向错误对角加速度计算的影响。实验室研究用于确定距离误差在正弦输入中响应角加速度计算中开始累积。进行了现场研究以计算车辆在崎road不平道路上的旋转运动。已经发现，安装夹具对于确保准确确定卡车的角加速度所需的必要传感器放置精度是有价值的。另外，实验室和现场分析表明，随着传感器间距位置接近原点传感器，由于独特性的损失，角加速度计算误差会增加。期望紧密的传感器安装阵列，但是在测量精度和记录阵列的紧凑性之间需要权衡。存在不能将传感器紧密安装的限制。