This paper focuses on the application of wheeled-legged robots for extraterrestrial exploration. To address the stability and terrain adaptability issues during planetary surface exploration, a novel motion control st...
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ISBN:
(纸本)9798350388084;9798350388077
This paper focuses on the application of wheeled-legged robots for extraterrestrial exploration. To address the stability and terrain adaptability issues during planetary surface exploration, a novel motion control strategy integrating body attitude control and support force control is proposed based on kinematic inverse solution. This strategy adjusts the body posture by dynamically regulating the length of each leg to ensure sufficient wheel-ground contact force while traversing rough terrains. The paper also conducts simulation and tests of the wheeled-legged robot in typical terrains. Results demonstrate that the proposed algorithm effectively overcomes terrain variations and enhances stability during the robot's movement.
The traditional control method of wheeled robot has the problem that system is unstable due to the inconsistency between the actual state and the target state. Therefore, this paper proposes a double closed-loop contr...
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ISBN:
(纸本)9789819607976;9789819607983
The traditional control method of wheeled robot has the problem that system is unstable due to the inconsistency between the actual state and the target state. Therefore, this paper proposes a double closed-loop control strategy based on trajectory tracking considering global stability. Initially, a comprehensive kinematics model is formulated. Based on the kinematics model of the system, the controller is designed to ensure the Lipchitz condition of position tracking closed-loop system, so as to ensure that stability of the system. Subsequently, the stability of the controller is validated through the application of Lyapunov stability theory. Finally, the effectiveness of the control strategy is verified by simulations.
Mobile robots with wheeled, legged and hybrid bases are currently used in industrial and service sectors for diverse applications. In this paper, a comparative study of various hybrid path planning algorithms for avoi...
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ISBN:
(纸本)9798350373141;9798350373158
Mobile robots with wheeled, legged and hybrid bases are currently used in industrial and service sectors for diverse applications. In this paper, a comparative study of various hybrid path planning algorithms for avoiding static obstacles were carried out for determining a most efficient path planning algorithm for a given task. A modified Probabilistic Road Map (PRM) approach was combined with different versions of A* algorithm to create different hybrid path planning algorithms. The nodes and connections were created using a PRM approach and optimal paths were constructed using different versions of the A* algorithm. This paper compared computational time, memory consumed and path length for determining a suitable hybrid algorithm for a given task. The selected hybrid algorithms were evaluated by simulating an obstacle avoidance task of a mobile robot in a structured environment.
Due to the wide variety and small number of aerospace products, the assembly process of related products becomes very complicated. In order to achieve the production requirements of safer, more efficient, better produ...
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This article presents a comprehensive analysis of the safety issues associated with LNG receiving terminals, which play a crucial role in the natural gas supply chain. Given the rapid growth of the LNG industry, ensur...
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Managing diabetes effectively is vital to prevent complications such as heart disease, nerve damage, and kidney issues. This research shows that weight control and tailored interventions can improve blood sugar and me...
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The proceedings contain 8 papers. The topics discussed include: intelligent robotic chess system;study on the mechanical system of a docking robot with fork-holding of two sides for palletized goods on a conveyor line...
ISBN:
(纸本)9798400716706
The proceedings contain 8 papers. The topics discussed include: intelligent robotic chess system;study on the mechanical system of a docking robot with fork-holding of two sides for palletized goods on a conveyor line;3D printed myoelectric hand orthosis with force control;development and control of a 5-DOF robotic arm using forward kinematics and IoT integration;creating trustworthy patrol robot with an ethical design approach;research on detection strategy for EL defects in PV module based on YOLOv5 and improved multi-NMS;detection of osseous metastasis from bone scintigrams using a combined global and local patch-based deep learning model;and a weighted ensemble domain generalization method via multi-level invariant feature learning for rotating machinery fault diagnosis.
Manipulators are used extensively in industrial and service sectors due to their capability to carry out a task effectively. This paper presents a kinematic modelling, a workspace analysis, a static structural analysi...
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ISBN:
(纸本)9798350373141;9798350373158
Manipulators are used extensively in industrial and service sectors due to their capability to carry out a task effectively. This paper presents a kinematic modelling, a workspace analysis, a static structural analysis and a simulation study of a simple 3 degrees-of-freedom (DoF) Cartesian manipulator developed for pressing buttons of an elevator. Denavit-Hartenberg approach was used for determining kinematic equations, which allowed constructing a manipulator workspace. A static structural analysis in ABAQUS determined stresses and deformations acting at manipulator links. The dimensions and material for fabricating the manipulator were selected using static structural analysis. Simulations with virtual human models from LIRS-HMLG library were carried out in Gazebo to study motion capabilities and range of the manipulator, and evaluate its performance in a human-robot interaction scenario.
This study explores an attitude balance control method for a Wheeled Quadruped Robot (WQR) traversing unilateral obstacle scenarios with varying slopes. By incorporating a force feedback mechanism, this method enables...
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In this paper, a novel data-driven optimal control approach is proposed for servomechanisms with unknown models. At first, an adaptive state error feedback control policy is designed by recurrence formula with data to...
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