对于机器人超声波测试的G3-连续五进制B-Spline轨迹的双目标优化
1School of Mechanical Engineering, Beijing Institute of Technology, Beijing 100081, China.
Sensors (Basel, Switzerland)
|September 27, 2025
概括
本研究介绍了一种G3连续轨迹规划方法,使用五进制B-spline曲线进行稳定和准确的机器人超声波测试. 该方法优化了复杂表面的机器人扫描路径,提高了非破坏性测试的效率.
科学领域:
- 机器人和自动化 机器人和自动化
- 非破坏性测试 不破坏性测试
- 计算几何学的计算几何学
背景情况:
- 超声波测试的机器人扫描面临着运动不稳定性和在复杂的自由形状表面的低精度的挑战.
- 现有的方法与高曲率和不规则形状作斗争,导致轨迹突变和振荡.
研究的目的:
- 开发G3连续轨迹规划和优化方法,用于复杂的自由形状表面的机器人超声波测试.
- 在自动化非破坏性测试中增强运动稳定性和检测准确性.
主要方法:
- 利用五角形B线曲线来表示机器人扫描轨迹,确保G3连续性 (位置,速度,加速,冲击).
- 构建了一个复合目标函数,平衡轨迹平滑度 (加速积的平方) 和表面拟合误差 (平均平方误差).
- 使用数值优化算法来解决目标函数并推导出最佳轨迹.
主要成果:
- 提出的方法实现了G3连续性,确保了高阶的几何连续性和机器人扫描的稳定运动.
- 优化的轨迹显示了轨迹突变和振荡的显著缓解,改善了合适的准确性.
- 模拟和实验结果验证了该方法对高效,高精度的自动超声波测试的有效性.
结论:
- 基于五边形B线的G3连续轨迹规划方法为复杂的曲线工件的机器人非破坏性测试提供了可靠的策略.
- 这种方法提高了运动稳定性和表面贴合精度,为更高效的自动检查铺平了道路.
相关概念视频
Three-Dimensional Force System:Problem Solving
1.3K
A three-dimensional force system refers to a scenario in which three forces act simultaneously in three different directions. This type of problem is commonly encountered in physics and engineering, where it is necessary to calculate the resultant force on the system, which can then be used to predict or analyze the behavior of the object or structure under consideration.
To solve a three-dimensional force system, first resolve each force into its respective scalar components. Do this using...
To solve a three-dimensional force system, first resolve each force into its respective scalar components. Do this using...
1.3K
Orthogonal Trajectories
8
Orthogonal trajectories describe the geometric relationship between two families of curves that intersect each other at right angles. One illustrative case involves a family of parabolas that open sideways along the x-axis. These curves share a common shape but differ by a scaling parameter, resulting in a set of curves that all pass through the origin and widen at different rates.Determining Orthogonal TrajectoriesTo identify the orthogonal trajectories for these parabolas, the first step...
8
Relative Motion Analysis using Rotating Axes-Problem Solving
704
Consider a crane whose telescopic boom rotates with an angular velocity of 0.04 rad/s and angular acceleration of 0.02 rad/s2. Along with the rotation, the boom also extends linearly with a uniform speed of 5 m/s. The extension of the boom is measured at point D, which is measured with respect to the fixed point C on the other end of the boom. For the given instant, the distance between points C and D is 60 meters.
Here, in order to determine the magnitude of velocity and acceleration for point...
Here, in order to determine the magnitude of velocity and acceleration for point...
704
Two-Dimensional Force System: Problem Solving
1.2K
Solving problems related to two-dimensional force systems is an essential aspect of mechanics and engineering. By applying the principles of vector analysis and force equilibrium, one can determine the effect of multiple forces acting on an object in a two-dimensional space.
The first step to solving a two-dimensional force system problem is to draw a free-body diagram of the object under consideration. This diagram helps identify all the external forces acting on the object, including their...
The first step to solving a two-dimensional force system problem is to draw a free-body diagram of the object under consideration. This diagram helps identify all the external forces acting on the object, including their...
1.2K
Kinematic Equations: Problem Solving
27.3K
When analyzing one-dimensional motion with constant acceleration, the problem-solving strategy involves identifying the known quantities and choosing the appropriate kinematic equations to solve for the unknowns. Either one or two kinematic equations are needed to solve for the unknowns, depending on the known and unknown quantities. Generally, the number of equations required is the same as the number of unknown quantities in the given example. Two-body pursuit problems always require two...
27.3K
Equation of Motion: General Plane motion - Problem Solving
486
Consider a lawn roller with a mass of 100 kg, a radius of 0.2 meters, and a radius of gyration of 0.15 meters. A force of 200 N is applied to this roller, angled at 60 degrees from the horizontal plane. What will be the angular acceleration of the lawn roller?
The friction between the roller and the ground is characterized by two coefficients. The static friction coefficient is 0.15, while the kinetic friction coefficient is 0.1. These values are crucial in understanding the interaction between...
The friction between the roller and the ground is characterized by two coefficients. The static friction coefficient is 0.15, while the kinetic friction coefficient is 0.1. These values are crucial in understanding the interaction between...
486


