Related Experiment Video
Updated: May 8, 2025
10:32
Robotic Mirror Therapy System for Functional Recovery of Hemiplegic Arms
Published on: August 15, 2016
15.4K
A Whole-Body Coordinated Motion Control Method for Highly Redundant Degrees of Freedom Mobile Humanoid Robots
Hao Niu1, Xin Zhao1, Hongzhe Jin2
1School of Mechanical, Electronic and Control Engineering, Beijing Jiaotong University, Beijing 100044, China.
Biomimetics (Basel, Switzerland)
|December 27, 2024
Summary
This study introduces a novel whole-body control algorithm for mobile humanoid robots, optimizing arm potential energy for smoother, human-like movements. The method effectively manages robot redundancy and enhances task performance in complex environments.
Area of Science:
- Robotics
- Artificial Intelligence
- Control Systems
Background:
- Mobile humanoid robots with wheeled chassis and dual arms are crucial for complex tasks in industrial and domestic settings.
- Bipedal walking limitations necessitate alternative configurations for enhanced mobility and task execution.
- High redundancy in these robots presents a significant challenge for coordinated motion control.
Purpose of the Study:
- To develop a whole-body coordinated motion control algorithm for mobile humanoid robots.
- To address the redundancy issue using arm potential energy optimization.
- To enable realistic and efficient humanoid movements through human arm modeling.
Main Methods:
- Constructed gravity and virtual torsional spring potential energy models for robot arms.
- Developed an optimization index function based on arm potential energy.
- Utilized a neural network with variable stiffness to mimic human arm properties.
- Employed a posture mapping method to translate human arm models to the robot.
- Integrated task-space and joint-space planning for comprehensive motion control.
Main Results:
- Validated the effectiveness of the proposed control algorithm through simulations.
- Demonstrated smooth motion and maintenance of a low potential energy state.
- Confirmed that robot movements align with human arm operational characteristics.
- Successfully executed tasks including single-arm manipulation, object retrieval, and dual-arm carrying.
Conclusions:
- The arm potential energy optimization approach effectively manages redundancy in mobile humanoid robots.
- The algorithm enables human-like movements, enhancing the robot's adaptability and performance.
- This method offers a promising solution for advanced humanoid robot control in diverse applications.
Related Concept Videos
01:24One-Degree-of-Freedom System
434
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...
434
01:24Muscle Coordination and Action
1.2K
Muscle coordination is a complex and finely tuned process essential for smooth and purposeful movements like flexion, extension, adduction, abduction, and rotation. The human body orchestrates the actions of various muscles working in concert, each with a specific role. Four functional types describe how muscles work together: agonist, antagonist, synergist, and fixator.
Agonists
Agonist muscles, often called prime movers, are the primary muscles responsible for producing a specific movement....
Agonists
Agonist muscles, often called prime movers, are the primary muscles responsible for producing a specific movement....
1.2K
01:27Movement Joints in Buildings
90
Movement joints in buildings are essential design elements that accommodate inevitable motions caused by various factors such as temperature changes, moisture content variations, and structural deflections. These motions, if not considered in design and construction, can lead to unsightly or dangerous damage. Movement joints are incorporated in different forms to manage these stresses and allow materials to move without causing distress.
The simplest type of movement joints, working joints, are...
The simplest type of movement joints, working joints, are...
90
01:06Virtual Work for a System of Connected Rigid Bodies
345
Virtual work is a powerful method used to solve problems involving several connected rigid bodies. When the system is in equilibrium, virtual work is zero. This allows the calculation of the resulting forces when a system undergoes a virtual displacement. When attempting to analyze such a system, first, use a free-body diagram, where an independent coordinate represents the configuration of the links, and mark its deflected position resulting from the positive virtual displacement.
Next,...
Next,...
345
01:22Planar Rigid-Body Motion
352
Understanding the movement of a rigid body in planar motion involves recognizing that every particle within this body is traversing a path that maintains a consistent distance from a specific plane. This concept is fundamental in the study of physics and mechanical engineering, and it allows us to comprehend better how objects move in space.
Planar motion is typically divided into three distinct categories. The first is rectilinear translation, demonstrated by a subway train that moves along...
Planar motion is typically divided into three distinct categories. The first is rectilinear translation, demonstrated by a subway train that moves along...
352
01:30Three-Dimensional Force System:Problem Solving
577
A three-dimensional force system refers to a scenario in which three forces act simultaneously in three different directions. This type of problem is commonly encountered in physics and engineering, where it is necessary to calculate the resultant force on the system, which can then be used to predict or analyze the behavior of the object or structure under consideration.
To solve a three-dimensional force system, first resolve each force into its respective scalar components. Do this using...
To solve a three-dimensional force system, first resolve each force into its respective scalar components. Do this using...
577