动态建模和反向补偿合歇斯底里在气动人造肌肉驱动软操纵器与可变硬度的合歇斯底里
Ying Zhang1, Qiang Cheng1, Wenlin Chen2
1School of Mechanical Engineering and Automation, Northeastern University, Shenyang 110819, China.
ISA transactions
|December 2, 2023
概括
本研究提出了一种新的动态模型和软操纵器使用气动人工肌肉 (PAM) 的控制策略. 这种方法有效地解决了合歇斯底里,大大提高了这些复杂的机器人系统的定位精度.
科学领域:
- 机器人技术 机器人技术 机器人技术
- 控制系统 控制系统
- 材料科学 材料科学 材料科学
背景情况:
- 软操纵器在连续操作和可变刚度方面提供了独特的优势.
- 气动人造肌肉 (PAMs) 引入歇斯底里非线性,导致结合的性和速度依赖性特征.
- 这种非线性导致软操纵器的定位性能不准确.
研究的目的:
- 开发一个全面的动态模型,用于软操纵器与合的hysteresis.
- 根据拟议的模型,设计一个脱逆补偿和脱控制策略.
- 通过实验分析验证模型和控制策略.
主要方法:
- 一个串联的两部分动态模型被提出来预测操纵者的行为.
- 实施了脱逆补偿和脱控制方法.
- 进行实验验证,以评估性能.
主要成果:
- 拟议的动态模型准确地预测操纵者的行为,包括合歇斯底里.
- 开发的控制策略有效地减轻了合动态歇斯底里.
- 实验结果显示了高精度和强大的概括能力.
结论:
- 综合动态模型成功捕捉了软操纵器中复杂的歇斯底里.
- 分离的控制策略显著提高了定位准确性.
- 这些发现对于提高软机器人系统的性能至关重要.
相关概念视频
Mechanical Systems
209
Mechanical systems are analogous to to electrical networks where springs and masses play similar roles to inductors and capacitors, respectively. A viscous damper in mechanical systems functions similarly to a resistor in electrical networks, dissipating energy. The forces acting on a mass in such systems include an applied force in the direction of motion, counteracted by forces from the spring, a viscous damper, and the mass's acceleration. This interplay of forces is mathematically...
209
Linear Approximation in Time Domain
83
Nonlinear systems often require sophisticated approaches for accurate modeling and analysis, with state-space representation being particularly effective. This method is especially useful for systems where variables and parameters vary with time or operating conditions, such as in a simple pendulum or a translational mechanical system with nonlinear springs.
For a simple pendulum with a mass evenly distributed along its length and the center of mass located at half the pendulum's length,...
For a simple pendulum with a mass evenly distributed along its length and the center of mass located at half the pendulum's length,...
83
One-Degree-of-Freedom System
491
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...
491
Open and closed-loop control systems
759
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...
759
Stability of structures
171
In mechanical engineering, the stability of systems under various forces is critical for designing durable and efficient structures. One fundamental way to explore these concepts is by analyzing systems like two rods connected at a pivot point, O, with a torsional spring of spring constant k at the pivot point. This system is similar in appearance to a scissor jack used to change tires on a car. In this case, the arms of the linkage (equivalent to the rods in this system) are entirely vertical,...
171
Damped Oscillations
5.7K
In the real world, oscillations seldom follow true simple harmonic motion. A system that continues its motion indefinitely without losing its amplitude is termed undamped. However, friction of some sort usually dampens the motion, so it fades away or needs more force to continue. For example, a guitar string stops oscillating a few seconds after being plucked. Similarly, one must continually push a swing to keep a child swinging on a playground.
Although friction and other non-conservative...
Although friction and other non-conservative...
5.7K


