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首页> 外文期刊>Journal of Aerospace Sciences and Technologies >PILOT COMMAND IMPLEMENTATION IN AIRCRAFTS: A NEW APPROACH BASED ON DYNAMIC INVERSION
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PILOT COMMAND IMPLEMENTATION IN AIRCRAFTS: A NEW APPROACH BASED ON DYNAMIC INVERSION

机译：飞行员指挥命令在飞机上的实现：一种基于动态反演的新方法

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A new approach based on dynamic inversion is proposed in this paper for implementing pilot commands in an aircrafts. The command inputs from the pilot are assumed to be (ⅰ) the normal acceleration and forward velocity commands in the longitudinal mode and (ⅱ) roll rate, height and forward velocity commands in the lateral mode. A major difference here is that the second derivatives of the velocities along body y and z directions are assumed to be zero, as opposed to the first derivatives (which is used in many published literature). The new approach leads to a significant reduction of tuning parameters in the control design process, which is a major advantage. Detailed derivations of the modified approach are presented with respect to the generic aircraft dynamics model available in [16]. Extensive Six-DOF simulation studies show that, besides the above advantage, the new approach leads to two other additional advantages; namely reduced oscillatory response and reduced control magnitude. In a comparison study with an existing method using the Six-DOF model for Boeing 747 (with the numerical data available in [16]), numerical results clearly show the improved performance of this new approach. Furthermore, in lateral mode a technique for obtaining a corresponding roll rate command from the desired bank angle command is also implemented. Comparison results show improved performance of the new approach with this modification as well.
机译：本文提出了一种基于动态反演的新方法，用于在飞机上实施飞行员命令。来自飞行员的命令输入假定为（ⅰ）纵向模式下的正常加速度和前进速度命令，以及（ⅱ）横向模式下的（ⅱ）滚动速度，高度和前进速度命令。这里的主要区别在于，与一阶导数（在许多公开的文献中使用的）相反，沿体y和z方向的速度的二阶导数被假定为零。这种新方法大大减少了控制设计过程中的调整参数，这是一个主要优势。关于[16]中可用的通用飞机动力学模型，提出了改进方法的详细推导。广泛的六自由度仿真研究表明，除了上述优点之外，新方法还带来了另外两个优点：即降低了振荡响应并降低了控制幅度。在与使用六自由度模型的波音747现有方法（具有可在[16]中获得的数值数据）的比较研究中，数值结果清楚地表明了这种新方法的改进性能。此外，在横向模式中，还实现了用于从期望的倾斜角命令获得对应的侧倾率命令的技术。比较结果表明，通过这种修改，新方法的性能也有所提高。

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