Navigation of mobile robot in cluttered environment

Now a day’s mobile robots are widely used in many applications. Navigation of mobile robot is primary issue in robotic research field. The mobile robots to be successful, they must quickly and robustly perform useful tasks in a complex, dynamic, known and unknown surrounding. Navigation plays an important role in all mobile robots activities and tasks. Mobile robots are machines, which navigate around their environment extracting sensory information from the surrounding, and performing actions depend on the information given by the sensors. The main aim of navigation of mobile robot is to give shortest and safest path while avoiding obstacles with the help of suitable navigation technique such as Fuzzy logic. In this, we build up mobile robot then simulation and experiments are carried out in the lab. Comparison between the simulation and experimental results are done and are found to be in good

Virtual obstacles for sensors incapacitation in robot navigation : a systematic review of 2D path planning

The field of mobile robot (MR) navigation with obstacle avoidance has largely focused on real, physical obstacles as the sole external causative agent for navigation impediment. This paper has explored the possible option of virtual obstacles (VOs) dominance in robot navigation impediment in certain navigation environments as a MR move from one point in the workspace to a desired target point. The systematically explored literature presented reviews mostly between the years 2000 and 2021; however, some outlier reviews from earlier years were also covered. An exploratory review approach was deployed to itemise and discuss different navigation environments and how VOs can impact the efficacy of both algorithms and sensors on a robotic vehicle. The associated limitations and the specific problem types addressed in the different literature sources were highlighted including whether or not a VO was considered in the path planning simulation or experiment. The discussion and conclusive sections further recommended some solutions as a measure towards addressing sensor performance incapacitation in a robot vehicle navigation problem.The Department of Industrial and Systems Engineering, University of Pretoria.https://www.mdpi.com/journal/sensorsam2023Industrial and Systems Engineerin

Neural Network based Robot 3D Mapping and Navigation using Depth Image Camera

Robotics research has been developing rapidly in the past decade. However, in order to bring robots into household or office environments and cooperate well with humans, it is still required more research works. One of the main problems is robot localization and navigation. To be able to accomplish its missions, the mobile robot needs to solve problems of localizing itself in the environment, finding the best path and navigate to the goal. The navigation methods can be categorized into map-based navigation and map-less navigation. In this research we propose a method based on neural networks, using a depth image camera to solve the robot navigation problem. By using a depth image camera, the surrounding environment can be recognized regardless of the lighting conditions. A neural network-based approach is fast enough for robot navigation in real-time which is important to develop the full autonomous robots.In our method, mapping and annotating of the surrounding environment is done by the robot using a Feed-Forward Neural Network and a CNN network. The 3D map not only contains the geometric information of the environments but also their semantic contents. The semantic contents are important for robots to accomplish their tasks. For instance, consider the task “Go to cabinet to take a medicine”. The robot needs to know the position of the cabinet and medicine which is not supplied by solely the geometrical map. A Feed-Forward Neural Network is trained to convert the depth information from depth images into 3D points in real-world coordination. A CNN network is trained to segment the image into classes. By combining the two neural networks, the objects in the environment are segmented and their positions are determined.We implemented the proposed method using the mobile humanoid robot. Initially, the robot moves in the environment and build the 3D map with objects placed in their positions. Then, the robot utilizes the developed 3D map for goal-directed navigation.The experimental results show good performance in terms of the 3D map accuracy and robot navigation. Most of the objects in the working environments are classified by the trained CNN. Un-recognized objects are classified by Feed-Forward Neural Network. As a result, the generated maps reflected exactly working environments and can be applied for robots to safely navigate in them. The 3D geometric maps can be generated regardless of the lighting conditions. The proposed localization method is robust even in texture-less environments which are the toughest environments in the field of vision-based localization.博士(工学)法政大学 (Hosei University

A Consolidated Review of Path Planning and Optimization Techniques: Technical Perspectives and Future Directions

In this paper, a review on the three most important communication techniques (ground, aerial, and underwater vehicles) has been presented that throws light on trajectory planning, its optimization, and various issues in a summarized way. This kind of extensive research is not often seen in the literature, so an effort has been made for readers interested in path planning to fill the gap. Moreover, optimization techniques suitable for implementing ground, aerial, and underwater vehicles are also a part of this review. This paper covers the numerical, bio-inspired techniques and their hybridization with each other for each of the dimensions mentioned. The paper provides a consolidated platform, where plenty of available research on-ground autonomous vehicle and their trajectory optimization with the extension for aerial and underwater vehicles are documented

Automation and Control

Advances in automation and control today cover many areas of technology where human input is minimized. This book discusses numerous types and applications of automation and control. Chapters address topics such as building information modeling (BIM)–based automated code compliance checking (ACCC), control algorithms useful for military operations and video games, rescue competitions using unmanned aerial-ground robots, and stochastic control systems

Otonom Araçla Genetik Algoritma Kullanılarak Haritalama ve Lokasyon

Teknolojik gelişmeler ve bu zamana kadar biriken bilgilerin ışığında otonom sistemlerde muazzam bir ilerleme kaydedilmiştir. Bu sayede otonom sistemler çarpışmadan kaçınma, trafik işareti tespiti, haritalama vb. sayısız akıllı işlevleri gerçekleştirebilmektedir. Gerçek zamanlı otonom araçların en zorlu problemi aracın kendi kendine haritalandırma ve lokasyon işlemlerini yapabilmesidir. Genetik Algoritma (GA) kullanarak optimize edilmiş lokasyon uygulaması ile otonom araçlar için sürüş güvenliğinin artması beklenmektedir. Bu çalışmada lazer tabanlı bir lokalizasyon ve haritalama tekniğinin üzerine odaklanılmıştır. Gerçekleştirilen sistemde sanal bir test ortamı kurulmuş ve bir otonom araç üzerinde denemeler yapılmıştır. Çalışma kapsamında sanal makineler oluşturularak üzerlerine Linux işletim sistemi kurulmuştur. Sonra bu sanal makinelere ROS ortamında TurtleBot3 kurulmuş ve iç mekân lokalizasyonu yapılarak bir harita elde edilmiştir. Bu harita genetik algoritma ile en kısa mesafelerin bulunmasını sağlamak için kullanılmaktadır. Gözlemler neticesinde simülasyon ortamındaki robot yüksek başarımla istenilen konuma gidebildiği sonucuna ulaşılmıştır