Assessment and selection of suppliers are two most important tasks in the purchasing part in supply chain management. Supplier selection can be considered to be a single or multi-objective problem. From another point of view, it can be a single or multi-sourcing problem. In this paper, an integrated AHP and Fuzzy TOPSIS model is proposed to solve the supplier selection problem. This model makes...

Effective learning by demonstration techniques enable complex robot behaviors to be taught from a small number of demonstrations. Demonstrations are obtained based on a selection algorithm, which governs which states are labeled by the human teacher. In this work, we examine selection algorithms used by the robot to request demonstration examples. Previous approaches typically rely on a fixed c...

This paper describes how fuzzy control can be applied to sonar based obstacle avoidance of HelpMate mobile robot. Behavior-based fuzzy control for HelpXlate mobile robot was designed. The design and implementation of fuzzy control system is described. The fuzzy controller provides the mechanism for solving sens(,r data fi'om all sonar sensors which present differ<,.t infl)rmation. Behavior-base...

Reactive deliberation is a novel robot architecture that has been designed to overcome some of the problems posed by dynamic robot environments. It is argued that the problem of action selection in nontrivial domains cannot be intelligently resolved without attention to detailed planning. Experimental evidence is provided that the goals and actions of a robot must be evaluated at a rate commens...

Detection and removal of antipersonnel landmines is a serious problem of today. There is a dire need for low-cost mobile robots for the purpose of mine detection and disposal. A de-mining mobile robot has to be cost effective compared to local labor costs. Presently commercially available mobile robots consist of mainly custom made parts. The design and manufacturing of such parts make the robo...

Undesirable chatter is one of the key problems that restrict improvement robot milling quality and efficiency. The prediction stability, which used to guide selection process parameters, an effective method avoid in milling. Due weak stiffness robot, deformation caused by forces becomes unavoidable problem, will change tool–workpiece contact area affect stability prediction. However, it often s...

During the past fifteen years, robot work cells have become a standard component of many industrial production systems. Up to now, the design of a robot work cell or a automated work station for a specific manufacturing process is a demanding task, although tools have been already developed for different design steps. The problem is that each tool is suitable only for one design step such as as...

This paper addresses the optimal control and selection of gaits in a class of dynamic locomotion systems that exhibit group symmetries. We study near-optimal gaits for an underwater eel-like robot, though the tools and analysis can be applied more broadly to a large family of nonlinear control systems with drift. The approximate solutions to the optimal control problem are found using a truncat...

Localization under appearance changes is essential for robots during long-term operation. This paper investigates the problem of place recognition in environments that undergo dramatic visual changes. Our approach builds upon previous work on graph-based image sequence matching and extends it by incorporating a hashing-based image retrieval strategy in case of localization failures or the kidna...

Modern robotics applications require robots to be able to communicate with humans seamlessly and effectively. We propose a structured algorithm for natural language generation in the context of indoor route instructions that allows a robot to combine metrical, topological and semantic information about the surrounding environment while generating natural language instructions. Our method learns...