Kinematic Analysis and Simulation of a Novel Continuum Robot for Search and Rescue

2013 ◽  
Vol 644 ◽  
pp. 265-270
Author(s):  
Guang Zhu Meng ◽  
Ling Yu Sun ◽  
Ming Lu Zhang ◽  
Xian Chun Meng ◽  
Hong Mei Wang

In this paper, a novel continuum robot for search and rescue is presented. A detailed formulation of fundamentally new kinematic model is then introduced. Kinematic analysis adopt product of exponentials formula, compare with conventional D-H method, this method is concise and simplicity. Finally, the forward kinematic simulation is completed by Matlab software.

2013 ◽  
Vol 303-306 ◽  
pp. 1695-1701 ◽  
Author(s):  
Guang Zhu Meng ◽  
Ling Yu Sun ◽  
Ping Peng ◽  
Xian Chun Meng ◽  
Hong Mei Wang ◽  
...  

In this paper, a novel continuum robot for search and rescue is presented. A forward kinematic model is derived by product of exponentials formula, compare with conventional D-H method, this method is concise and simplicity. Finally, based on the differential kinematics using the chain rule, the overall Jacobian of the robot is established. This approach can be generally applied to various continuum robots, regardless of the specific actuation system used.


Author(s):  
Pan Yang ◽  
Feng Gao

This paper presents kinematic analysis of a 3-degree of freedom parallel mechanism for hexapod walking-operating multifuctional robot. Each leg of the robot consists of three limbs: universal joint – prismatic joint chain (1-UP) and universal joint – prismatic joint – spherical joint chain (2-UPS) and at the end of the leg there is passive spherical joint to adjust to the uneven ground. In this paper, first the forward kinematic model is built and it shows that the model has close-form solution. Then the work space is discussed in which the robot feet trajectories can be projected. It can be shown that the current trajectories of the feet only take very small work space. After that force analysis is performed and the results show that the payload capability of the mechanism is very high. Experiments of the prototype show that the robot can walk easily with more than 150 kg loads while the step size is more than 0.5 m.


Robotica ◽  
2019 ◽  
Vol 38 (8) ◽  
pp. 1463-1477 ◽  
Author(s):  
Houssem Saafi ◽  
Houssein Lamine

SUMMARYThis paper investigates a comparative kinematic analysis between nonredundant and redundant 2-Degree Of Freedom parallel manipulators. The nonredundant manipulator is based on the Five-Bar mechanism, and the redundant one is a 3-RRR planar parallel manipulator. This study is aimed to select the best structure for a haptic application. This latter requires a mechanism with a desired workspace of 10 cm × 10 cm and an admissible force of 5 N in all directions. The analysis criteria are the accuracy of the forward kinematic model and the required actuator torques. Thereby, the geometric parameters of the two structures are optimized in order to satisfy the required workspace such that parallel singularities are overcome. The analysis showed that the nonredundant optimally designed manipulator is more suitable for the haptic application.


Author(s):  
Mazhar Ul Haq ◽  
Zhao Gang ◽  
Shaban Usman ◽  
Anees Ur Rehman ◽  
S.M. Aftab

IPMC is becoming an increasingly popular material among scholars, engineers and scientists due to its inherent properties of low activation voltage, large bending strain, flexibility, softness, suitable response time which make them a strong candidate to be applied as artificial muscle in biomimetic land and underwater applications. The applications of IPMC have been growing due to progression in its manufacturing techniques, development of more accurate response models and control techniques, and recently more sophisticated IPMC actuator applications have been performed. In this paper, a new application of IPMC is proposed to actuate aileron fins of a micro scanning device towed underwater by a surface vessel to control its depth and to stabilize it against roll motion that can mimic pectoral fins of fish that steer them up and down by changing their angle of rotation and their dorsal fins that keep them upright against roll. Same is applicable for autonomous underwater vehicles. Secondly, a three link mechanism is presented to actuate aileron fin through IPMC actuator. Three dimensional model of the mechanism is developed in Pro-Engineer CAD software tool and its kinematic analysis is performed. Thirdly, forward kinematic model of proposed mechanism, based on geometric coordinate, is presented. Lastly, results of kinematic analysis of proposed mechanism are compared to that of model to verify its design and kinematics. Encouraging results decoy the research team to manufacture the mechanism and to perform experiments for its practical application.


2020 ◽  
Author(s):  
Sadaf Zeeshan ◽  
Tauseef Aized

Abstract One of the most challenging areas in robot design is its kinematic analysis for proper and efficient path planning. In agricultural robots, this study is even more crucial due to the uneven terrain and unstructured environment. In agricultural robots, work has been done on fruit harvesting robots yet its commercial recognition is still underway. Further research needs to be done in this field to make the fruit harvesting robots more commercially acceptable. In this paper, a 6 degree of freedom (DOF) orange harvesting robot is designed and its kinematic analysis is done. Forward kinematic is done using Denavit-Hartenberg (DH) parameters while the inverse kinematics is done using algebraic method. The calculated formulas are verified by simulation on RoboAnalyzer software. The algorithm for inverse kinematics using probabilistic approach did not generate any error and worked successfully generating 16 results within the workspace. The simulated dynamic results also supported the kinematic model. The kinematic study validates the model design and calculations, whereas, its simulation verifies the path planning and reachability of oranges on the trees within the confined workspace.


2013 ◽  
Vol 433-435 ◽  
pp. 121-124
Author(s):  
Hua Yan Pu ◽  
Juan Zhang ◽  
Wen Chuan Jia ◽  
Jun Luo

One-degree-of-freedom ten-bar mechanism is a novel mechanism designed to clear loose debris for the search and rescue robot, which involves only one motor to generate the sweep motion. This paper established the kinematic model for the mechanism. The effects of the adjustable parameters on the tips trajectory are analyzed. From the results, a set of optimal parameters are obtained.


2016 ◽  
Vol 2016 ◽  
pp. 1-7 ◽  
Author(s):  
Yingzhong Tian ◽  
Mingxuan Luan ◽  
Xu Gao ◽  
Wenbin Wang ◽  
Long Li

This paper presents the kinematic analysis of a continuum bionic robot with three flexible actuation rods. Since the motion of the end-effector is actuated by the deformation of the rods, the robot structure is with high elasticity and good compliance and the kinematic analysis of the robot requires special treatment. We propose a kinematic model based on the geometry with constant curvature. The analysis consists of two independent mappings: a general mapping for the kinematics of all robots and a specific mapping for this kind of robots. Both of those mappings are developed for the single section and for the multisections. We aim at providing a guide for kinematic analysis of the similar manipulators through this paper.


2013 ◽  
Vol 816-817 ◽  
pp. 821-824
Author(s):  
Xue Mei Niu ◽  
Guo Qin Gao ◽  
Zhi Da Bao

Kinematic analysis plays an important role in the research of parallel kinematic mechanism. This paper addresses a novel forward kinematic solution based on RBF neural network for a novel 2PRRR-PPRR redundantly actuated parallel mechanism. Simulation results illustrate the validity and feasibility of the kinematic analysis method.


2017 ◽  
Vol 116 ◽  
pp. 262-272 ◽  
Author(s):  
Anirban Nag ◽  
Santhakumar Mohan ◽  
Sandipan Bandyopadhyay

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