Distillation is the most common method for separating components in chemical unit operation. In this study, Honeywell mini batch distillation column for laboratory scale is used for separating binary mixtures, ethanol...
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Distillation is the most common method for separating components in chemical unit operation. In this study, Honeywell mini batch distillation column for laboratory scale is used for separating binary mixtures, ethanol and water. Nonlinear equations model of batch distillation column are presented in this paper based on component mass balance, vapor-liquid equilibrium and other physical characteristic. A reflux valve in the top of column is used as the input to controlthe amount of vapor into condenser and distillate product. the purity distillate is produced as the output of batch distillation column. the real nonlinear model parameters, based on experiment data, are calculated and simulated in Matlab.
Withthe development of Brain-Computer Interface (BCI) systems people with motor disabilities are able to control external devices using their thoughts. To control a device through BCI, brain activities of the user mu...
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ISBN:
(纸本)9781509050970
Withthe development of Brain-Computer Interface (BCI) systems people with motor disabilities are able to control external devices using their thoughts. To control a device through BCI, brain activities of the user must be accurately translated to meaningful commands and a design of appropiate BCI paradigms play important roles in such tasks. this work presents a design and evaluation of a BCI system that is based on P300 Event-Related Potentials (ERP) in order to control a mobile robot platform into four directions (left, right, front, back). the ultimate goal of this research is to provide convienient way of controlling a mobile robot as an assistive home technology for disabled people. Low cost EPOC Emotiv headset was used in the BCI system to acquire brain signals with a Jaguar 4x4 Wheel robot as a control platform. We discuss a set of signal processing steps employed in detail and the utility of a regularized logistic regression classifier to detect visual stimuli induced P300 ERPs and, to controlthe Jaguar robot.
Planned active debris removal and on-orbit servicing missions require capabilities for capturing objects on Earth's orbit, e.g., by the use of a manipulator. In this paper we demonstrate the application of a traje...
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ISBN:
(纸本)9789897581984
Planned active debris removal and on-orbit servicing missions require capabilities for capturing objects on Earth's orbit, e.g., by the use of a manipulator. In this paper we demonstrate the application of a trajectory optimization algorithm for free-floating satellite-manipulator systems in two cases: a planar system with 2 degrees of freedom manipulator and a spatial system with a manipulator having four degrees of freedom. For the case with planar system, results of experiments performed on an air-bearing microgravity simulator are shown. Quadratic norm connected withthe power consumption of manipulator motors has been used as a cost functional that is minimized. Optimal trajectories are compared with straight-line trajectories and it is shown that the optimization allows reduction of the power use of manipulator motors (for the planar system 30 trajectories based on randomly selected initial and final end-effector positions were analysed and the cost functional was, on average, reduced by 49.4%). the presented method could be modified by using cost functional that would, e.g., minimize disturbance on the satellite.
LiDAR sensors are unable to detect objects that are inside or behind dense smoke, fog or dust. these aerosols lead to problems for environmental modeling with mobile robotic platforms. For example, if a robot equipped...
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ISBN:
(纸本)9789897581984
LiDAR sensors are unable to detect objects that are inside or behind dense smoke, fog or dust. these aerosols lead to problems for environmental modeling with mobile robotic platforms. For example, if a robot equipped with a LiDAR is surrounded by dense smoke, it can neither localize itself nor can it create a map. Radar sensors, on the other hand, are immune to these conditions, but are unable to represent the structure of an environment in the same quality as a LiDAR due to limited range and angular resolution. In this paper, we introduce the mechanically pivoting radar (MPR), which is a 2D high bandwidth radar scanner. We present first results for robotic mapping and a fusion strategy in order to reduce the negative influence of the aforementioned harsh conditions on LiDAR scans. In addition to the metric representation of an environment with low visibility, we introduce the LRR (LiDAR-Radar-Ratio), which correlates withthe amount of aerosols around the robot discussing its meaning and possible application.
Robotic fruit harvesters typically utilize multiple-degree-of-freedom arms, often kinematically redundant. the hypothesis is that as branches constrain fruit reachability, redundancy is necessary to navigate through b...
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Robotic fruit harvesters typically utilize multiple-degree-of-freedom arms, often kinematically redundant. the hypothesis is that as branches constrain fruit reachability, redundancy is necessary to navigate through branches and reach fruits inside the canopy. Modern commercial orchards increasingly adopt trees of SNAP architectures (Simple, Narrow, Accessible, and Productive). this paper presents a simulation study on linear fruit reachability (LFR) on high-density, trellised pear trees;linear only motion was used to reach the fruits. Results based on digitized geometric tree models and fruit locations showed that 91.1% of the fruits were reachable after three "harvesting passes" with proper approach angles. (C) 2016, IFAC (international Federation Automatic control) Hosting by Elsevier Ltd. All rights reserved.
the paper describes the dynamic behavior of STATCOM device and a SVC device connected in the National Grid and shows simulation results. the operation principle of the two devices will be presented. the simulations we...
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this paper proposes a novel driving-assistance system for manual wheelchairs with consideration of both uphill and downhill conditions. On an inclined road, there is a high risk of a wheelchair moving in a direction t...
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ISBN:
(纸本)9789897581984
this paper proposes a novel driving-assistance system for manual wheelchairs with consideration of both uphill and downhill conditions. On an inclined road, there is a high risk of a wheelchair moving in a direction that the user does not intend. In our previous works, the user has driven our assistive wheelchair in the usual manner. Our proposed system estimates its user's intentions and passively works to complement their intentional force by negating the wheel traction that is generated by the road's inclination using only the servo brakes on each wheel. Nevertheless, in some cases, our system fails to assist the driving motion of its user because the user drives the wheelchair in several ways that depend upon the environmental condition, for example, during uphill or downhill driving. the required assistance is not constant according to the situation, and it is difficult to assist with one wheel-control algorithm. therefore, in this study, we first investigate the required assistance condition according to the driving situation by conducting a preliminary experiment with wheelchair users. Considering the results of this investigation, we then propose a novel user interface that intuitively shows the system information and a wheel-control algorithm that selects a suitable wheel controller according to the driving situation.
the paper describes a generic Cloud robotics teleoperation system which allows to control in real-time a robot (connected with a 4G network) having its video stream as feedback. the proposed system relies on the Azure...
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ISBN:
(纸本)9781509050932
the paper describes a generic Cloud robotics teleoperation system which allows to control in real-time a robot (connected with a 4G network) having its video stream as feedback. the proposed system relies on the Azure Cloud Platform and on recent web technologies. Particularly, we present an use case experiment in which an operator in Slovakia controls a robot situated in Italy in order to evaluate its real-time feasibility. We test the system to assess its performances providing the throughput value of the communication and the average delay between consecutive received packets on both robot and teleoperation side. Additionally, regarding the video streaming, we test several packet sizes to establish a suitable image quality. the results show how the chosen technology allows to have real-time performances in terms of video and velocity commands streaming.
Monitoring and fault diagnosis systems are vital for industrial robot systems for better awareness of system status and shortening the down time. In many cases, the monitoring systems are not upgraded after the robot ...
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ISBN:
(纸本)9781509028702
Monitoring and fault diagnosis systems are vital for industrial robot systems for better awareness of system status and shortening the down time. In many cases, the monitoring systems are not upgraded after the robot first installation, because the modifications could cause undesired disturbance for the production. However, for better monitoring and diagnostics rich information is essential that typically requires additional sensors and modifications to the robot system. this paper proposes a monitoring system that is possible to add-on to existing industrial robot system without any changes into the existing control and safety system. the statuses of all safety guard components are indirectly collected by optical sensors to ensure that safety aspects are maintained. the energy consumptions of the main components are monitored with energy analyser and nonintrusive current transformers. the proposed system also uses wireless technology for simplifying the installation. the main benefits of proposed solution are rapid deployment, easy scalability and enhanced fault diagnosis of the main components of the system.
this paper presents the Metabotix project: Teaching robotics and Programming for girls, which is being developed since 2014 at Instituto Federal de Goi5;s - Campus Luziânia, using free/open hardware and softw...
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