dynamic environments
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2022 ◽  
Vol 169 ◽  
pp. 108648
Author(s):  
Yuping Wu ◽  
Wenjun Lv ◽  
Zerui Li ◽  
Ji Chang ◽  
Xiaochuan Li ◽  
...  

Machines ◽  
2022 ◽  
Vol 10 (1) ◽  
pp. 50
Author(s):  
Liwei Yang ◽  
Lixia Fu ◽  
Ping Li ◽  
Jianlin Mao ◽  
Ning Guo

To further improve the path planning of the mobile robot in complex dynamic environments, this paper proposes an enhanced hybrid algorithm by considering the excellent search capability of the ant colony optimization (ACO) for global paths and the advantages of the dynamic window approach (DWA) for local obstacle avoidance. Firstly, we establish a new dynamic environment model based on the motion characteristics of the obstacles. Secondly, we improve the traditional ACO from the pheromone update and heuristic function and then design a strategy to solve the deadlock problem. Considering the actual path requirements of the robot, a new path smoothing method is present. Finally, the robot modeled by DWA obtains navigation information from the global path, and we enhance its trajectory tracking capability and dynamic obstacle avoidance capability by improving the evaluation function. The simulation and experimental results show that our algorithm improves the robot's navigation capability, search capability, and dynamic obstacle avoidance capability in unknown and complex dynamic environments.


2022 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Charlott Hübel

PurposeThis paper adopts a sensemaking lens to explore the process of entrepreneurship-driven organizational transformation for sustainability.Design/methodology/approachAnalysis is based on an in-depth case study of a large European meat company. Sensemaking by top and middle managers is analyzed over the period of 18 months.FindingsThe findings show how, over time, bidirectional sensemaking, that is, sensemaking for and of sustainability-oriented entrepreneurship, directed and accelerated organizational transformation for sustainability. The case company transformed with regard to organizational strategy, structure, operations and identity. The process revealed temporally different involvement of top and middle managers in sensemaking.Originality/valueThis paper offers unique insights into fast and emergent sustainability-oriented change in an established organization within a highly topical context. The results highlight how continuous and increasingly shared sensemaking can help top and middle managers navigate organizational change for sustainability in dynamic environments over time.


Robotica ◽  
2022 ◽  
pp. 1-20
Author(s):  
Shubhi Katiyar ◽  
Ashish Dutta

Abstract Dynamic path planning is a core research content for intelligent robots. This paper presents a CG-Space-based dynamic path planning and obstacle avoidance algorithm for 10 DOF wheeled mobile robot (Rover) traversing over 3D uneven terrains. CG-Space is the locus of the center of gravity location of Rover while moving on a 3D terrain. A CG-Space-based modified RRT* samples a random space tree structure. Dynamic rewiring this tree can handle the randomly moving obstacles and target in real time. Simulations demonstrate that the Rover can obtain the target location in 3D uneven dynamic environments with fixed and randomly moving obstacles.


Author(s):  
Taewoong Ryu ◽  
Unil Yun ◽  
Chanhee Lee ◽  
Jerry Chun‐Wei Lin ◽  
Witold Pedrycz

2022 ◽  
Vol 2146 (1) ◽  
pp. 012023
Author(s):  
Binghua Guo ◽  
Nan Guo

Abstract With the continuous development of intelligent algorithms, mobile robot (hereinafter referred to as MR) technology is gradually mature, which has been widely used in a variety of industries, such as industry, agriculture, medical treatment, service and so on. With the improvement of intelligent level, people have higher and higher requirements for MRs, which requires MRs to constantly adapt to different environments, especially dynamic environments. In the dynamic environment, obstacle avoidance technology has become the focus of intelligent robot research, which needs to continuously develop a variety of algorithms. By combining a variety of algorithms, we can realize obstacle avoidance and PP (hereinafter referred to as PP) of MR, which can realize obstacle avoidance more efficiently, in real time and intelligently. Multi algorithm fusion of MR has become the main trend of obstacle avoidance in the future, which will realize PP and optimization. Firstly, this paper analyzes the differences between traditional algorithms and intelligent algorithms. Then, the kinematics model and PP algorithm of MR are analyzed. Finally, the simulation is carried out.


2022 ◽  
Vol 130 (3) ◽  
pp. 1-21
Author(s):  
Chanho Park ◽  
Hyunwoo Cho ◽  
Sangheon Park ◽  
Sung-Uk Jung ◽  
Suwon Lee
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