基于模糊控制技术的精确空降系统设计

发布时间：2018-06-22 12:15

本文选题：空降单元 + 不确定性　；参考：《西南交通大学》2017年硕士论文

【摘要】：精确空降是指确保空降人员或者空降物尽可能地降落到目标区域内,该目标区域是以目标点为中心、既定的空投精度为半径的圆形范围。空降对天气和地面条件有着很高的要求,风速、能见度等对空降也会产生很大的影响。一般情况下,空降兵在短暂的空降时间内基本依靠自身来判断所处的高度等数据,但在能见度低或夜间环境下,空降兵对这些重要数据的判断会变得非常困难,这也将影响空降人员的安全以及降落点的精度,导致有效战斗力无法快速集结形成。为此本文深入研究空降单元的降落过程,发现该过程有着很多的不确定性,受到风速等诸多因素的影响和干扰。而模糊控制能够对精确模型难以建立的复杂对象实现有效控制,对参数的变化不敏感,具有强鲁棒性,适合解决时变、非线性等传统方法难以有效解决的复杂系统控制问题,因此基于模糊控制策略的构架,对空降单元进行控制。本文建立空降单元运动过程的Simulink模型,对控制对象进行模糊化,设计出模糊控制器的隶属函数、模糊规则等,反复验证得到控制效果较好的模糊控制器,并编写出C语言文件验证该控制算法。基于模糊控制器策略,分析空降单元的运动情况,比较有无控制器的降落精度,并进行多工况的讨论,推导出该控制器作用下的边界条件。其结果表明,在模糊控制器的作用下,存在诸多不确定性、难以建立精确模型的控制对象能够具有良好的抗干扰能力,使空降单元能够能见度低或夜间环境下进行作业,并拥有良好的降落精度。
[Abstract]:The exact airborne is to ensure that the airborne personnel or airborne objects fall into the target area as much as possible. The target area is the center of the target and the circular range of the air drop precision is a radius. The air drop has a high requirement for the weather and ground conditions, and the wind speed and visibility will also have a great influence on the airborne. The airborne troops basically rely on themselves to judge the height and other data in the short flight time, but in the low visibility or night environment, the judgment of the airborne soldiers to these important data will become very difficult. This will also affect the safety of the airborne personnel and the precision of the landing point, which leads to the failure of the effective fighting capacity to quickly gather. In this paper, the landing process of the airborne unit is deeply studied. It is found that the process has many uncertainties and is influenced and disturbed by many factors such as wind speed, and the fuzzy control can effectively control the complex objects which are difficult to set up by the exact model. It is not sensitive to the change of the parameters, and has strong robustness. It is suitable for solving time-varying, nonlinear transmission. It is difficult to solve the complex system control problem which is difficult to solve effectively. Therefore, based on the framework of the fuzzy control strategy, the airborne unit is controlled. In this paper, the Simulink model of the motion process of the airborne unit is set up, the control object is fuzzed, the membership function of the fuzzy controller, the fuzzy rules are designed, and the control effect is proved repeatedly. A good fuzzy controller, and a C language file is compiled to verify the control algorithm. Based on the fuzzy controller strategy, the motion of the airborne unit is analyzed, the landing precision of the controller is compared, and the multiple working conditions are discussed, and the boundary conditions under the controller are derived. The results show that, under the action of the fuzzy controller, there are various factors. With many uncertainties, the control objects which are difficult to establish an accurate model can have good anti-interference ability, make the airborne unit have low visibility or work in the night environment, and have good landing precision.
【学位授予单位】：西南交通大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：V244.21;TP273.4

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