This video presents our recent research on the integration of physical human-robot interaction (pHRI) into imitation learning. First, a marker control approach for realtime human motion imitation is shown. Secondly, p...
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This video presents our recent research on the integration of physical human-robot interaction (pHRI) into imitation learning. First, a marker control approach for realtime human motion imitation is shown. Secondly, physical coaching in addition to observational learning is applied for the incremental learning of motion primitives. Last, we extend imitation learning to learning pHRI which includes the establishment of intended physical contacts. The proposed methods were implemented and tested using the IRT humanoid robot and DLR’s humanoid upper-body robot Justin.
Aiming at computing the force feel to be simulated at real time, thrust lever control loading system's simulation model is set by software called Sim Mechanics after its control mechanism being analyzed. The dynam...
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Aiming at computing the force feel to be simulated at real time, thrust lever control loading system's simulation model is set by software called Sim Mechanics after its control mechanism being analyzed. The dynamic characteristics of control systems and model torque are studied based on the simulation model. Then the counter potential, primary element to cause the surplus torque, is pointed out according to the dynamic characteristics of control. To make the loading system not only flow the model torque precisely but also retrain surplus torque effectively, the low frequency of the current loop is designed due to frequency spectrum of counter potential and follow-up component in model torque, while the medium frequency is on basis of the step component in model torque. Finally, the reasonableness of the designed current loop is verified by computer simulation of the torque output by motor and loading torque.
The paper deals with applicative aspects concerning the control of speed and position of a BLDC servo system with low - but Variable in a given range - Moment of Inertia (VMI). Detailed models of various applications,...
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The paper deals with applicative aspects concerning the control of speed and position of a BLDC servo system with low - but Variable in a given range - Moment of Inertia (VMI). Detailed models of various applications, some control solutions are discussed and developed and part of them tested on the basis of the specific features of the plants with VMI. The adopted control solutions - PI(D) control (as reference solution) and fuzzy control with homogenous and non-homogenous dynamics - are briefly presented and some approaches regarding the methods are highlighted. Due to the applicability of the methods in the field of mechatronics applications with VMI (speed and positioning control of rapid plants), the presented aspects are of permanent actuality, and they offer directions of future research.
This paper presents a design of a 23-DOF small humanoid robot with force sensors for zero moment point(ZMP) measurement. Piezoresistive strain gauges are used under the feet of the robot to measure ground reaction for...
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This paper presents a design of a 23-DOF small humanoid robot with force sensors for zero moment point(ZMP) measurement. Piezoresistive strain gauges are used under the feet of the robot to measure ground reaction force which is used to locate ZMP under the robot foot support area. The robot also uses gyroscope and acceleration sensor for motion *** robot developed is capable of all directional walking, running and performing different kung fu like *** specifications, joints distribution, walking planning of the robot, ZMP measurement scheme and vibration control using gyro sensor are discussed in this paper.
The rate of major accidents at sea tended to *** utilization of dynamic information for massive ships in the maritime search and rescue shows more and more *** paper imports GIS to emergency data management and discus...
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The rate of major accidents at sea tended to *** utilization of dynamic information for massive ships in the maritime search and rescue shows more and more *** paper imports GIS to emergency data management and discusses many GIS technologies that can be used for maritime search and *** report our experience on the development of a prototype system based on three-dimension *** show that our methodology is applicable and efficient.
A sufficient amount of studies worldwide prove an interrelation linking students’learning productivity,emotional and psychological state to physiological *** states and the interest in learning affect learning produc...
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A sufficient amount of studies worldwide prove an interrelation linking students’learning productivity,emotional and psychological state to physiological *** states and the interest in learning affect learning productivity,while physiological parameters demonstrate such *** the research by the authors of the present article confirmed these interdependencies,a Recommender System to Analyse Student’s Learning Productivity(Recommender System hereafter)has been *** Recommender System uses the Maslow’s Hierarchy of Needs and the database of the best global practices to come up with recommendations for students how to improve their learning *** research includes various scientists who conducted in-depth studies on the different and very important areas in the *** did not find any systems which would take physiological parameters of students,analyse their learning efficiency and,in turn,provide recommendations.
This paper reports a navigation and mapping data-set collected in the Croatian Kornati Archipelago during the "Breaking the Surface 2010" international Interdisciplinary Field Training of Marine robotics and...
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This paper reports a navigation and mapping data-set collected in the Croatian Kornati Archipelago during the "Breaking the Surface 2010" international Interdisciplinary Field Training of Marine robotics and Applications event. A sensor ridge including a navigation and mapping sensor suite, to be later installed in the GIRONA500 AUV being developed a the university of Girona, was attached to a motor boat to collect geo-referenced data. The sensor suite includes a Multibeam sonar profiler, an AHRS, a DGPS, a sound-speed profiler including a depth cell, a video camera and a mechanical scanning sonar profiler. The paper reports the experiment performed as well as the navigation and mapping results using: 1) GPS only (used as a ground truth), 2) Dead Reckoning only, and 3) a preliminary method fusing dead reckoning with surface registration based on a simple modification of the well known ICP algorithm. Preliminary, but promising, results show that a better performance may be achieved using the last method.
The paper concerns the result of the implementation of classic point to plane 3D data registration method with an improvement based on GPGPU parallel computation. 3D data is delivered by mobile robot equipped with 3D ...
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The paper concerns the result of the implementation of classic point to plane 3D data registration method with an improvement based on GPGPU parallel computation. 3D data is delivered by mobile robot equipped with 3D laser measurement system for INDOOR and OUTDOOR environments. Presented empirical analysis of the implementation shows the On-Line computation capability using modern graphic processor unit NVIDIA GF 580. The implementation is a part of a project “Semantic simulation engine” composed of following modules: data registration module, semantic entities identification module, semantic simulation. The goal of the project is to deliver software tools capable to create virtual model of the environment based on robot observations and perform semantic simulation, where all virtual entities correspond to real one. Possible practical application of the project are supervision and control of robotic system and mobile robot operator training using Augmented Reality techniques. Data registration module is composed of the implementation of point to point and point to plane classic methods improved by the usage of parallel computation. In this paper it has been shown that the implementation of GPGPU point to plane registration method is accurate in INDOOR structured environment but it has some difficulties in accurate alignment in OUTDOOR environment.
This study attempts to draw lessons from successful microfinance approaches exist particularly in the rural context by exploring how they have effectively reached the rural communities and met their diverse financial ...
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This study attempts to draw lessons from successful microfinance approaches exist particularly in the rural context by exploring how they have effectively reached the rural communities and met their diverse financial needs with a case study of a particular microfinance institution called SANASA Development Bank Ltd. (SDBL), which has been able to achieve an impressivesuccess in serving the rural communities in Sri Lanka. The findings of this study highlights that the peoples ownership, bank's extensive linkages with Primary Thrift and Credit Cooperative Societies (PTCCSs), products and services oriented towards the client's needs and expectations with innovative approaches have largely contributed towards successfully serving the rural markets along with a rapid growth. In addition the evidence from SDBL suggests that with a proper business framework, establishment of a profitable core business, proven management, strong donor partnerships, management information and control systems, MFIs can be successful and effectively serve the rural communities.
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