The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
A robotic wiring harness assembly system, basing on vision and force/torque sensors, is developed to realize mating of electric connectors. In this system, cameras are firstly used to detect the position and the pose of a grasped connector, and then the corresponding bias is calculated roughly to guarantee the connector can be contacted with the other opposite part. After that, a force/torque sensor...
Recently, a human and robot cooperated new working style is under the growing demand in the manufactory to meet the High-Mix, Low-Volume production need of the society. In this paper, a Human and Robot Cooperation (HRC) approach is proposed. Firstly, a Non-deterministic Finite State Machine (NDFSM) and Petri-net (PN) Dual Layer Architecture (NPDLA) is proposed for human worker and robot respectively...
An upper limb robotic exoskeleton of three degrees of freedom (DOF) is designed for the patients who survived stroke and the elderly who have not enough strength to move their limbs freely. Particular attention is paid to the realization of a intention-driven robotic control approach, by which the robotic exoskeleton can assist the user moving his/her arm freely to where he/she intends to go. A force...
When a human manipulates an object with a power assist robot, the human feels a scaled-down effect of the load and the forces required to manipulate the object also reduce. We determined in our previous research that the power assist robot reduces the weight of the lifted object to 40% of its actual weight. However, the root cause of reduced heaviness of objects manipulated with power assist robots...
In recent years, considerable amount of research has been dedicated to the integration of artificial cognitive functionalities into informatics. With the immense growth in volume of cognitive content handled by both artificial and natural cognitive systems, the scientific treatment of new and efficient communication forms between such cognitive systems is inevitable. In this paper, we provide the...
In this study, we propose new type of a low-cost flexible tactile sensor which can detect 3-axial force and suitable for intelligent robot fingers. In order to propose innovative device, problems of previous studies about materials and structures were analyzed and fabrication process is used by the polymer micromachining technique. The designed tactile sensor is comprised of several micro force-sensing...
Vascular disease is a major cause of death, therefore it is desirable to develop robots and simulation tools for catheter trajectory evaluation. Until now trajectory completion duration, catheter tip location, wall deformation, morphology and stress applied to blood vessel phantom wall were identified as evaluation parameters during endovascular surgery simulation. For that purpose image processing...
This paper designed a wall-climbing robot for painting the hull surface. The robot walked with caterpillar, permanent adsorption and driven by AC servo motor, the paint system was controlled by solenoid valve and pressure pump. Control system uses the supervisory computer and lower computer of two-stage distributional control mode. And the robot itself is equipped with a visual system to observe the...
An automatic exchange device for manipulators is proposed based on multi-sensor considering the application background of the space robot in this paper. A micro-regulator is installed in the robot's wrist. Rough positioning with vision guiding, precise positioning by optical guiding, posture adjustment and active-passive hybrid compliant control strategy are used in docking. Both geometric constraint...
In this article, fuzzy control theory is used to solve the robot's obstacle avoidance problem. The inputs and the outputs of the fuzzy logic control system are selected suitably to establish the fuzzy control rules and the fuzzy-controller. Computer simulation results show that, by using this algorithm, the robot can avoid the obstacle accurately, and arrive at the destination quickly.
This paper concerns a robot system fit for detecting mine disaster information on the basis of the working principle of detecting robot system. It introduces in details the structure of the system; the technologies of passing through obstacles, obstacles avoidance by using sensors; the collection of information and wireless transmission modules, including gas sensors, temperature sensors, network...
Sensorless Brushless DC motors have been a research focus home and abroad, because their characteristics of small volume, high reliability, strong anti-interference and the ability to overcome inaccurate commutation caused by mechanical installation. This article will carry on a research on the operation principles and performance characteristics of sensorless DC motors and methods that terminal voltage...
One of the current challenges in the development of robot control systems is making them capable of intelligent and suitable responses to changing environments. But, the control of the robot's behavior in uncertain and dynamic environments is very challenging when the problem is how to guarantee the robot's safety by minimizing the interaction with other actors. The most popular methods are based...
Distributed systems are employed in countless applications such as information systems, robotics, etc. Lack of central control makes the design of such systems a challenging task because of possible unwanted behavior at runtime, commonly known as emergent behavior. Developing a methodology to detect emergent behavior in the pre-implementation stages of the software development life-cycle of distributed...
The problem of global positioning using a rigorous Bayesian framework based on the theory of random finite sets and their corresponding density functions is covered in this condensed tutorial. The positioning scenario considered involves a number of anonymous beacons with known position relative to which the agent can measure its position. Since the beacons are anonymous, determining the agents position...
A partially observable Markov decision process (POMDP) is proposed to perform multi-view classification of underwater objects. The model allows one to adaptively determine which additional views of an object would be most beneficial for reducing classification uncertainty. Acquiring additional views is made possible by employing a sonar-equipped autonomous underwater vehicle (AUV) for data collection...
Wireless actuators are small scale devices that can receive/accept instructions and act on their environment. The IP Multimedia Subsystem (IMS) is a key component for 3G networks. It aims at seamless provisioning of multimedia services. Combining actuation capabilities with IMS capabilities will certainly enable novel value added services. This paper proposes an architecture for the integration of...
A local positioning system (LPS) for tracking mobile robots using a newly developed ultra-wideband (UWB) ranging radio technology is presented in this paper. However, measured ranges from these radios often have uncertain biases and large sporadic errors due to multipath and attenuation effect. A fuzzy neighborhood tracking filtering technique was developed to deal with the range outlier problems...
This article use intelligent method based on fuzzy neural network for real-time robot path planning. The constructed fuzzy neural network has six inputs and two outputs. The six inputs are the obstacle distance information detected by the five sonar sensors installed on the robot and the target point relative to the robot orientation information; Obstacle information obtained from the five sensors...
The coal mine detect and rescue robot is used for detecting the explosion environment of coal mine and rescuing miners who are trapped in the underground coal mine after gas explosion. Coal mine is a dangerous place in which many fatal factors menace miners' life, especially when blasts occurred. Rescue crews usually don't know the actual situation of the mine tunnel under such circumstances. Therefore...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.