scholarly journals Seeking Multiple Solutions: An Updated Survey on Niching Methods and Their Applications

2017 ◽  
Vol 21 (4) ◽  
pp. 518-538 ◽  
Author(s):  
Xiaodong Li ◽  
Michael G. Epitropakis ◽  
Kalyanmoy Deb ◽  
Andries Engelbrecht
Robotica ◽  
2009 ◽  
Vol 28 (4) ◽  
pp. 493-507 ◽  
Author(s):  
Saleh Tabandeh ◽  
William W. Melek ◽  
Christopher M. Clark

SUMMARYInverse kinematics (IK) is a nonlinear problem that may have multiple solutions. A modified genetic algorithm (GA) for solving the IK of a serial robotic manipulator is presented. The algorithm is capable of finding multiple solutions of the IK through niching methods. Despite the fact that the number and position of solutions in the search space depends on the position and orientation of the end-effector as well as the kinematic configuration (KC) of the robot, the number of GA parameters that must be set by a user are limited to a minimum through the use of an adaptive niching method. The only requirement of the algorithm is the forward kinematics (FK) equations which can be easily obtained from the Denavit–Hartenberg link parameters and joint variables of the robot. For identifying and processing the outputs of the proposed GA, a modified filtering and clustering phase is also added to the algorithm. For the postprocessing stage, a numerical IK solver is used to achieve convergence to the desired accuracy. The algorithm is validated on three KCs of a modular and reconfigurable robot (MRR).


2018 ◽  
Author(s):  
Michael H. Azarian

Abstract As counterfeiting techniques and processes grow in sophistication, the methods needed to detect these parts must keep pace. This has the unfortunate effect of raising the costs associated with managing this risk. In order to ensure that the resources devoted to counterfeit detection are commensurate with the potential effects and likelihood of counterfeit part usage in a particular application, a risk based methodology has been adopted for testing of electrical, electronic, and electromechanical (EEE) parts by the SAE AS6171 set of standards. This paper provides an overview of the risk assessment methodology employed within AS6171 to determine the testing that should be utilized to manage the risk associated with the use of a part. A scenario is constructed as a case study to illustrate how multiple solutions exist to address the risk for a particular situation, and the choice of any specific test plan can be made on the basis of practical considerations, such as cost, time, or the availability of particular test equipment.


2016 ◽  
Vol 2 (2) ◽  
pp. 333
Author(s):  
Michael Johnsn Nabie ◽  
Kolawole Raheem ◽  
John Bijou Agbemaka ◽  
Rufai Sabtiwu

2021 ◽  
pp. 207-218
Author(s):  
Safia Benmansour ◽  
Atika Matallah ◽  
Mustapha Meghnafi

Sign in / Sign up

Export Citation Format

Share Document