预定义的时间滑动模式控制四旋翼的位置和态度,具有可变的指数系数
Lifeng Hou1, Jianhua Zhang2, Zhanyang Yu3
1Shijiazhuang College of Applied Technology, Shijiazhuang, 050800, China.
Scientific reports
|November 12, 2025
概括
本研究介绍了四旋翼机的新预定义时间控制方法,确保更快,稳定地接近目标,即使系统动态发生变化. 新的算法比现有的控制策略更强大.
科学领域:
- 机器人和控制系统 机器人和控制系统
- 非线性动力学是一种非线性动力学.
- 人工智能在控制中
背景情况:
- 四旋翼系统需要强大的控制稳定性和轨迹跟踪.
- 现有的控制方法经常与表现出可变动态或实现快速融合的系统作斗争.
- 滑动模式控制 (SMC) 提供了稳定性,但可能面临聊天和融合时间问题.
研究的目的:
- 为四旋翼系统开发新的预定义时间滑动模式控制 (SMC) 算法.
- 为了应对四旋翼动力学中可变指数系数的挑战.
- 为了确保系统的稳定性,并实现预先定义的时间趋同到一个想要的目标.
主要方法:
- 开发一种新的预定义时间滑动模式控制算法.
- 将预定义时间的神经网络集成到滑动模式控制框架 (PTNN-SMC).
- 使用利亚普诺夫方法进行稳定性分析,以保证预先定义的时间趋同.
- 对各种非线性系统进行了广泛的数值模拟.
主要成果:
- 拟议的PT-SMC和PTNN-SMC算法成功实现了四旋翼系统的预定义时间融合.
- 对具有可变指数系数的系统表现出适应性.
- 稳定性分析证实了开发的控制器的理论能力.
- 与传统的SMC和神经网络控制相比,数值模拟显示出更高的性能.
结论:
- 新的预定义时间控制策略为四旋翼系统的融合速度和稳定性提供了显著的改进.
- 开发的算法有效地处理具有可变系数的非线性动态.
- 这项研究为先进的四旋翼控制应用提供了一个强大的框架.
相关概念视频
Absolute Motion Analysis- General Plane Motion
513
Visualize a drone, with its propellers spinning rapidly, hovering mid-air. The fascinating movements and operations of this drone can be comprehended by applying the principle of general plane motion.
As the drone's propellers rotate, an upward force is generated that counteracts the force of gravity, enabling the drone to lift off from the ground. This initial movement of the drone is along a straight path, representing a form of translational motion. In this phase, every point on the...
As the drone's propellers rotate, an upward force is generated that counteracts the force of gravity, enabling the drone to lift off from the ground. This initial movement of the drone is along a straight path, representing a form of translational motion. In this phase, every point on the...
513
PID Controller
634
Proportional-Integral-Derivative (PID) controllers are widely used in various control systems to enhance stability and performance. In a thermostat, it adjusts heating or cooling based on the temperature difference between the actual and desired levels. They are often used in automotive speed systems, effectively managing sudden speed changes while maintaining a constant speed under varying conditions. On the other hand, PI controllers, commonly employed in voltage regulation, enhance stability...
634
Relative Motion Analysis using Rotating Axes
868
Consider a component AB undergoing a linear motion. Along with a linear motion, point B also rotates around point A. To comprehend this complex movement, position vectors for both points A and B are established using a stationary reference frame.
However, to express the relative position of point B relative to point A, an additional frame of reference, denoted as x'y', is necessary. This additional frame not only translates but also rotates relative to the fixed frame, making it...
However, to express the relative position of point B relative to point A, an additional frame of reference, denoted as x'y', is necessary. This additional frame not only translates but also rotates relative to the fixed frame, making it...
868
Relative Motion Analysis using Rotating Axes-Problem Solving
689
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...
689
Relative Motion Analysis using Rotating Axes - Acceleration
736
Consider a component AB undergoing a linear motion. Along with a linear motion, point B also rotates around point A. To comprehend this complex movement, position vectors for both points A and B are established using a stationary reference frame. The absolute velocity of point B is determined by adding the absolute velocity of point A, the relative velocity of point B in the rotating frame, and the effects caused by the angular velocity within the rotating frame.
Time differentiation is...
Time differentiation is...
736
Time and frequency -Domain Interpretation of Phase-lag Control
381
Phase-lag controllers are widely used in control systems to improve stability and reduce steady-state errors. A dimmer switch controlling the brightness of a light bulb serves as a practical example of phase-lag control, gradually adjusting the bulb's brightness. Mathematically, phase-lag control or low-pass filtering is represented when the factor 'a' is less than 1.
Phase-lag controllers do not place a pole at zero, but instead influence the steady-state error by amplifying any...
Phase-lag controllers do not place a pole at zero, but instead influence the steady-state error by amplifying any...
381


