一个史密斯预测器被修改为为基于电荷合器件的光电子追踪系统的伪传送控制器.
Keran Deng1, Juan Tan2, Piao Chen2
1Chongqing Key Laboratory of Photo-Electric Functional Materials and Laser Technology, College of Physics and Electronic Engineering, Chongqing Normal University, Chongqing 401331, China.
Sensors (Basel, Switzerland)
|September 14, 2024
概括
一个修改后的史密斯预测器通过减少远见错误延迟来增强光电子跟踪系统 (OTS). 这种改进的控制带宽可以提高基于CCD的系统的跟踪精度和响应速度.
科学领域:
- 光电学是指光电子产品.
- 控制系统工程 控制系统工程
- 图像处理 图像处理
背景情况:
- 使用电荷合器件 (CCD) 的高精度光电子追踪系统 (OTS) 遭受了外观错误延迟.
- 这种延迟限制了控制带宽,影响了视觉跟踪响应速度和准确性.
- 由于模型的不确定性,传统的史密斯预测方法提供了有限的带宽改进.
研究的目的:
- 为OTS提出一种新的延迟补偿方法.
- 提高基于CCD的视觉跟踪系统的控制带宽和跟踪性能.
- 在高精度跟踪中克服传统史密斯预测器的局限性.
主要方法:
- 开发一个修改后的史密斯预测器,包括伪前控制.
- 将修改后的预测器集成到OTS的闭环控制中.
- 针对经典的史密斯预测器提出的方法的实验验证.
主要成果:
- 修改后的史密斯预测器显著降低了OTS的剩余错误.
- 在1Hz的最大残余误差下降了22.5%,从365到283弧秒.
- 与经典方法相比,在0.2Hz至2Hz频段内观察到的残余误差始终较低.
结论:
- 拟议的伪前修改的史密斯预测器有效地弥补了OTS的时间延迟.
- 这种方法在跟踪性能和控制带宽方面提供了实质性的改进.
- 该方法提高了高精度光电子追踪系统的准确性和响应性.
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