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In the modern industry, human-robot collaboration is becoming more and more important. With the quick development of the small production, the demand of flexibility is growing heavily. Gesture recognition is important for the collaborative work of humans and robots. In industrial applications, the performance of such systems affects the safety of human workers and their manufacturing efficiency. In...
Body segment inertial parameters of an exoskeleton and human being are of crucial importance for the development of model-based controllers and for the monitoring of rehabilitation processes. These parameters are usually provided using Computer Aided Design (CAD) models or averaged Anthropometric Tables (AT) for human. However, CAD models are often not sufficiently accurate and particularly if the...
This paper addresses the problem of grasping unknown objects with a humanoid robot. Conventional approaches fail when the shape, dimension or pose of the objects are missing. We propose a novel approach in which the grasping problem is solved by modeling the object and the volume graspable by the hand with superquadric functions. The object model is computed in real-time using stereo vision. Pose...
The computer-based real-time simulation of an electro-mechanical system using not only automatically fed pre-defined simulation conditions, but real life input signals to the system to enhance user control options is proposed. The introduced system is a robotic assistive technology for repair and maintenance of electrical power transmission lines in live condition. The setup is assisted by a simulation...
The purpose of this paper is to propose a method for simulation of a manipulator robot with six degrees of freedom. This method is oriented to solve the problem of absence of real robots which will operate it in validation of mathematical modeling and control of the nonlinear systems. It described in the first part the geometry of the robot manipulator, then the method is used to create this simulator...
Laughing response plays an important role in supporting human interaction and communication, and enhances empathy by sharing laughter each other. Therefore, in order to develop communication systems which enhance empathy, it is desired to design the media representation using the pupil response which is related to affective response such as pleasure-unpleasure. In this paper, we aim to enhance empathy...
The paper presents automated estimation techniques for robot parameters through system identification, for both PID control and future implementation of intelligent control laws, with the aim of designing the experimental model in a 3D virtual reality for testing and validating control laws in the joints of NAO humanoid robots. After identifying the maximum likelihood model, the PID amplification...
We propose a modeling and simulation method to control the pose of a projector mounted on a simple robotic device to be deployed in SAR (spatial augmented reality) application where a virtual content should be projected over a desired target area in the real world. For this purpose, the principal axis and four edges of a frustum, which are the key geometric features of projection, are kinematically...
In this article, a nonlinear adaptive impedance control strategy is proposed to adjust the impedance of a one-degree of freedom Falcon robot to a pre-defined nonlinear impedance which is an approximate mathematical representation of the sino-nasal tissue. Further developments can be used for a training simulator system for the otolaryngology surgery training purposes. The stability of the proposed...
This article focuses on a newly built research platform (a robot). Using its vision system, it can identify round objects that are randomly scattered on a table. Then, using its gripper they are picked and placed inside a basket. The control system is tuned such that, the succession of operations runs fast and safe. In this paper we present how this has been achieved: going from concepts to design,...
When an offline programming method is employed for an industrial robot, accurate work piece localization is critical as there always exist discrepancies between the actual and nominal work piece locations. By drawing upon the mathematical tools from group theory and differential geometry, three fundamental error models (i.e., point-to-point, line-to-line, and plane-to-plane models) are formulated...
The aim of this article is the simulation and the control of three degree of freedom robotic arms using brushless DC motors. The two arms are used to maintain the stability of the robot in presence of external disturbances. We used an analytical approach based on the inverse dynamic model to determine the necessary configurations of the arms to stabilize the robot. The control of robotic arm is achieved...
Tools can afford similar functionality if they share some common geometrical features. Moreover, the effect that can be achieved with a tool depends as much on the action performed as on the way in which it is grasped. In the current paper we present a two step model for learning and predicting tool affordances which specifically tackles these issues. In the first place, we introduce Oriented Multi-Scale...
This paper describes a novel offline approach to estimate the parameters of a nonlinear system using the optimal control theory. In the conventional methods, only the output is considered in the identification process and the problem is stated as a nonlinear optimization problem. Nevertheless, the proposed method here is based on the least square error of both output and input. To do this, the problem...
Motion-copying system (MCS) enables to preserve and reproduce the human motion faithfully, and various studies about MCS have been accomplished. Thereby, the concept of the motion database is created, and it is considered that preservation and reproduction of the motion data will spread in the various field including the industry, art and medical care. Then, The demand for processing the saved motion...
A rail-guided robotic system is currently being designed for the inspection of ballast water tanks in ships. This robotic system will manipulate sensors toward the interior walls of the tank. In this paper, the influence of rail compliance on the end-effector position error due to ship movement is investigated.
The paper presents an analysis of dynamic singularities in n-link pendulum-like models that are controlled using input-output feedback linearisation. The dynamic singularities are caused by the decoupling matrix being singular for particular configurations. The examples include 3-link planar pendulum, 3-link 3D pendulum and a simplified humanoid-like robot model. Partial stabilisation results are...
The paper deals with an effective approach of the robust controller design, based on the fuzzy logic. We developed algorithms with variable sampling for trajectorytracking. The proposed controller design and sampling algorithms are verified on the case study of the chosen mechatronic system. All numerical and graphical results are obtained in Co-simulation of combination two different modeling systems...
This paper presents the use of computed tomography image (CT) to generate a 3D workspace in the area of skull base. Our ultimate goal is to develop a surgical robotic system to aid in the endoscopic transsphenoidal surgery. The 3D workspace can benefit both aspects of robot design and intra operative navigation system. In our system, the 3D model of a skull base area is created by the 3DSlicer program...
Expansion Rod Capturing Nozzle Device is developed to achieve the function of capturing the non-cooperative satellite by locking the main engine nozzle. Nozzle structure is captured by the device through its throat, so the size and mass are small. The overall structure design of the device and the operating principle of the Expansion Rod mechanism are described. A method of Meshing Profile Modeling...
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