一个几乎全球的SO3估计器,用S2进行测量
John P Swensen1, Noah J Cowan1
1Department of Mechanical Engineering, Johns Hopkins University, Baltimore, MD 21218, USA.
概括
本研究引入了用于刚性身体方向的状态估计器,使用角速度和单个单位向量测量. 它提供了一种稳定高效的定向跟踪方法,适用于医疗机器人等领域.
科学领域:
- 机器人技术 机器人技术 机器人技术
- 控制理论 控制理论
- 国家估计.
背景情况:
- 准确的方向估计对于控制旋转的刚性物体至关重要.
- 现有的方法可能会面临融合问题或需要复杂的测量.
- 应用包括航空航天,机器人和生物力学.
研究的目的:
- 开发一个几乎全球一致的状态估计器,用于刚性身体定向.
- 提供使用最小测量的可靠估计方法.
- 为了证明估计器在实际场景中的适用性.
主要方法:
- 使用角速度和单个单位向量测量.
- 采用利亚普诺夫和不变态稳定性分析.
- 在控制输入上施加非退化约束.
主要成果:
- 拟议的状态估计器几乎实现了全球趋同.
- 稳定性分析证实了估计器的稳定性.
- 该方法通过应用到针尖方向估计来验证.
结论:
- 开发的状态估计器为刚性身体定向提供了有效的解决方案.
- 这种方法在计算上是高效的,需要最小的传感器数据.
- 这项工作对加强可转向针头的控制有直接影响.
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