Yu Kaile, Ren Weizheng, Zhang Yiran, Ge Yutong, Li Yuxiao
School of Electronic Engineering, Beijing University of Posts and Telecommunications, Beijing 100876, China.
School of Modern Post, Beijing University of Posts and Telecommunications, Beijing 100876, China.
Sensors (Basel). 2024 Aug 15;24(16):5293. doi: 10.3390/s24165293.
The accuracy of aerial work platform weighing is essential for safety. However, in practice, the same weight placed at different locations on the platform can yield varying readings, which is a phenomenon known as eccentric load. Measurement errors caused by eccentric loads can lead to missed detections and false alarms in the vehicle safety system, seriously affecting the safety of aerial work. To overcome the influence of eccentric load, the current engineering practice relies on multiple measurements at multiple points and averaging the results to eliminate the eccentric load, which greatly increases the work intensity of workers. To address the aforementioned issues, this paper proposes a three-dimensional force/torque shear force compensation scheme based on bending torque and torsional torque for pressure. The goal is to ensure that the sensor on the aerial work vehicle platform can accurately measure the anti-eccentric load under single-point measurement conditions. A three-box structure anti-eccentric load-weighing sensor for the aerial work platform was designed. Its structure has the advantages of high mechanical strength and no radial effect, ensuring the safety of aerial work, improvement of measurement sensitivity, and enabling of real-time and accurate acquisition of force/torque in three directions. In order to further improve the measurement accuracy of 3D force/torque compensation, a particle swarm optimization algorithm was adopted to optimize the 3D force/torque shear force compensation, thereby improving the safety of engineering operations. Through the verification of a self-made testing platform, the anti-eccentric load sensor designed in this study can ensure that the measurement error of objects at any position on the platform is less than 1.5%, effectively improving the safety of high-altitude platform engineering operations.
高空作业平台称重的准确性对安全至关重要。然而，在实际操作中，放置在平台不同位置的相同重量可能会产生不同的读数，这种现象称为偏心负载。偏心负载引起的测量误差会导致车辆安全系统出现漏检和误报，严重影响高空作业安全。为克服偏心负载的影响，目前工程实践依靠在多个点进行多次测量并对结果求平均值以消除偏心负载，这大大增加了工人的工作强度。为解决上述问题，本文提出一种基于压力弯曲扭矩和扭转扭矩的三维力/扭矩剪切力补偿方案。目标是确保高空作业车辆平台上的传感器能够在单点测量条件下准确测量抗偏心负载。设计了一种用于高空作业平台的三箱结构抗偏心负载称重传感器。其结构具有机械强度高和无径向效应的优点，确保了高空作业安全，提高了测量灵敏度，并能够实时准确采集三个方向的力/扭矩。为进一步提高三维力/扭矩补偿的测量精度，采用粒子群优化算法对三维力/扭矩剪切力补偿进行优化，从而提高工程作业安全性。通过自制测试平台的验证，本研究设计的抗偏心负载传感器能够确保平台上任意位置物体的测量误差小于1.5%，有效提高了高空平台工程作业的安全性。
