Due to the largely increasing demand for electrical power, other sources of energy have to be sought and wind power is one of those. Wind farms from around the world have continued to thrive due to its cost-effectiven...
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In this paper, we deal with the position control of the quad rotor. It is possible to divide the overall quadrotor system into position, altitude, and attitude subsystems. If we divide the overall system, then each su...
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ISBN:
(纸本)9781479914951
In this paper, we deal with the position control of the quad rotor. It is possible to divide the overall quadrotor system into position, altitude, and attitude subsystems. If we divide the overall system, then each subsystem is organically connected. For the position control of the quad rotor, dynamics of each subsystem is first derived, and obtained nonlinear dyanmics are converted the Takagi-Sugeno fuzzy model. Furthermore, a robust control techniques will be proposed to handle the parameters uncertainty contained in each subsystem. Conventional robust fuzzy controller did not take into account the decay rate, but the proposed method concerns about the decay rate so that the system will converge faster. Finally, to verify the validity of the proposed method, simulation example is given in this paper.
The paper describes a virtual keyboard based on a brain - computer interface, controlled by Steady - State Visual Evoked Potentials (SSVEP). Steady-State Visual Evoked Potentials are natural responses when the retina ...
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ISBN:
(纸本)9781467344883
The paper describes a virtual keyboard based on a brain - computer interface, controlled by Steady - State Visual Evoked Potentials (SSVEP). Steady-State Visual Evoked Potentials are natural responses when the retina is excited by a visual stimulus ranging from 3.5 Hz to 75 Hz. The SSVEPs are characterized by an increase in EEG activity around the stimulus frequency. The SSVEP component has been detected using Welsch's method. The Virtual Keyboard is characterized by high signal-to-noise ratio (SNR)
The paper presents first approach to modeling of the biaxial inverted pendulum. This model was determined mathematically using the Lagrange equations based on knowledge of the potential and kinetic energy of the cart ...
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ISBN:
(纸本)9781467344883
The paper presents first approach to modeling of the biaxial inverted pendulum. This model was determined mathematically using the Lagrange equations based on knowledge of the potential and kinetic energy of the cart and placed on the pendulum. It also presents a non-linear model of a biaxial inverted pendulum built in Matlabs SimMechanics toolbox. Then the Matlab linearized model was compared with the linearized model obtained by means of the mathematical calculations.
Truss, in which one or more passive members are replaced by active members containing piezoelectric actuator, have high coefficient of the vibration damping and have simultaneously low mass. The active members enable ...
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ISBN:
(纸本)9781467344883
Truss, in which one or more passive members are replaced by active members containing piezoelectric actuator, have high coefficient of the vibration damping and have simultaneously low mass. The active members enable a generation of the forces having an effect on selected nods in the truss. Such truss is called smart truss in literature. Expected effect of the active members application is a counteraction of the external influences on the truss, for example by wind. A project of the control algorithm of such smart truss is a difficult task, because it is MIMO control object. The control algorithms, which are based on the state space model, is a promising direction in the scientific research, because designed control lows take into account the displacements and speeds of all nods of the truss. This paper presents the results of simulation research of control system with the use of LQG algorithm for exemplary truss. The application of LQG algorithm in the smart truss control could influence the increase of the vibration damping of such structure.
This paper proposes a Distributed Fault-Detection System for fault detection and prediction in electrical actuators used in pipelines for oil and gas transportation. The proposed system incorporates a signal processin...
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Radio Frequency Identification (RFID) system is used for detecting and identifying the tagged objects by electromagnetic signals. Wireless Sensor Networks (WSN), which consists of a huge numbers of nodes, can monitor ...
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Radio Frequency Identification (RFID) system is used for detecting and identifying the tagged objects by electromagnetic signals. Wireless Sensor Networks (WSN), which consists of a huge numbers of nodes, can monitor the condition of the environment including pressure, humidity, and temperature. Data is transferred via nodes to a certain location. Integration of RFID and WSN provides a new feature and improves their functionalities. In the RFID system, each tag can only communicate with a reader. By integrating RFID tags with nodes, communication of the RFID tags with each other is possible and also integration of readers with nodes facilitates negotiation of readers together. The RFID and WSN integration in supply chain provides system intelligence. In such a case, tag is embedded in objects and reader is integrated with nodes. Therefore, identification and detection of tagged items is provided by using RFID and monitoring of environment can be obtained by using WSN. The present case study is simulated in the Petri Net Toolbox in MATLAB environment. It represented the negotiation of smart devices spontaneously in managing variety of instructions in order to enhance system performance.
In this paper, subthreshold characteristics have been presented for DGMOSFET, using the analytical model based on series form of potential distribution. The analytical potential distribution model of Poisson equation,...
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作者:
Maślanka, MarcinWeber, FelixFaculty of Mechanical Engineering and Robotics
Department of Process Control AGH University of Science and Technology al. A. Mickiewicza 30 30-059 Krakow Poland Empa
Swiss Federal Laboratories for Materials Science and Technology Structural Engineering Research Laboratory Ueberlandstrasse 129 CH-8600 Duebendorf Switzerland
Magnetorheological (MR) dampers can be used not only as controllable damping devices but also to emulate a controllable positive or negative stiffness in combination with the dissipative force. However, the dissipativ...
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Continuum robots do not have any joint in contrast to traditional articulated robots. Instead, these robots can bend, twist and stretch their backbone, to shape desired configurations and end-effector position. Theref...
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Continuum robots do not have any joint in contrast to traditional articulated robots. Instead, these robots can bend, twist and stretch their backbone, to shape desired configurations and end-effector position. Therefore, exact modeling of these robots is a challenging problem, particularly in spatial deformations. This paper suggests identification of some mechanical characteristics of the backbone of continuum robots, to achieve accurate results. The importance of identification of characteristics, such as undeformed shape and modulus of elasticity, will be discussed. Then, some methods to identify these characteristics are presented. Theory of Cosserat Rod will be introduced and used for modeling continuum robotic arms in this paper. Finally, the proposed approach is used for a given robot, and the model obtained based on the identified parameters will be validated by experimental results.
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