螺旋式微机器人的建模和运动控制使用双四边形框架和自适应滑动模式策略
Chen Zhang1, Wei Gao1, Ying Zhang1
1Department of Control Science and Engineering, Jilin University, Changchun 130022, China.
ISA transactions
|July 9, 2023
概括
这项研究提出了血液中螺旋式微机器人 (HMR) 的新控制策略,提高了它们的导航精度. 具有表面重量补偿器 (AWC-ASMC) 的自适应滑动模式控制有效地减少错误并最大限度地减少不必要的振动.
科学领域:
- 机器人技术 机器人技术 机器人技术
- 生物医学工程 生物医学工程
- 控制系统 控制系统
背景情况:
- 螺旋式微机器人 (HMR) 在血液等复杂的生物环境中面临着挑战.
- 精确的跟踪控制对于HMR在血管系统内的有效导航和操作至关重要.
研究的目的:
- 开发一种先进的控制策略,用于在模拟血液环境中精确跟踪HMR.
- 为解决由HMR重量和浮力造成的沉没和漂移问题.
- 为了减轻影响HMR运动的模型不确定性和外部干扰.
主要方法:
- 建立了一个集成的相对运动模型HMR使用双四度.
- 设计了一个原始的表面重量补偿器 (AWC) 来抵消引力和浮力效应.
- 开发了一个自适应滑动模式控制 (ASMC) 策略,称为AWC-ASMC,用于强大的跟踪.
- 利用利亚普诺夫理论来证明闭环系统的稳定性.
主要成果:
- 实际上,AWC有效地弥补了HMR的明显重量.
- 在AWC-ASMC策略显著减少相对运动跟踪错误.
- 建议的控制方法显著缓解了传统的滑动模式控制中常见的声现象.
- 数字模拟验证了开发的控制方案的有效性和优越性.
结论:
- 在具有挑战性的环境中,AWC-ASMC为螺旋式微机器人跟踪控制提供了强大的和有效的解决方案.
- 这种控制策略提高了HMR导航的准确性和稳定性,为潜在的生物医学应用铺平了道路.
- 开发的方法比微机器人系统的经典控制技术有了显著的改进.
相关概念视频
Relative Motion Analysis using Rotating Axes-Problem Solving
424
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...
424
One-Degree-of-Freedom System
519
In mechanical engineering, one-degree-of-freedom systems form the basis of a wide range of electrical and mechanical components. Using these models, engineers can predict the behavior of various parts in a larger system, which gives them insight into how different forces interact with each other.
A one-degree-of-freedom system is defined by an independent variable that determines its state and behavior. One example of a one-degree-of-freedom system is a simple harmonic oscillator, such as a...
A one-degree-of-freedom system is defined by an independent variable that determines its state and behavior. One example of a one-degree-of-freedom system is a simple harmonic oscillator, such as a...
519
Relative Motion Analysis using Rotating Axes
489
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...
489
Open and closed-loop control systems
824
Control systems are foundational elements in automation and engineering. They are broadly categorized into open-loop and closed-loop systems. These classifications hinge on the presence or absence of feedback mechanisms, significantly influencing the system's performance, complexity, and application.
An open-loop control system operates without feedback from the output. It consists of two primary elements: the controller and the controlled process. The controller receives an input signal...
An open-loop control system operates without feedback from the output. It consists of two primary elements: the controller and the controlled process. The controller receives an input signal...
824
Torque Free Motion
516
The torque-free motion refers to the movement of a rigid body in space when no external torques are acting upon it. This type of motion can be observed in environments where there are no external forces or frictions, like in outer space. For example, a rotation of Mars in space is a torque-free motion. Mars is an axisymmetric object, meaning it has an axis of symmetry along which it rotates, designated as the z-axis. The rotating frame of reference is defined such that the center of mass of...
516
Rotation with Constant Angular Acceleration - II
6.0K
Kinematics is the description of motion. The kinematics of rotational motion discusses the relationships between rotation angle, angular velocity, angular acceleration, and time. One can describe many things with great precision using kinematics, but kinematics does not consider causes. For example, a large angular acceleration describes a very rapid change in angular velocity without any consideration of its cause. Thus, rotational kinematics does not represent the laws of nature.
The first...
The first...
6.0K


