In this paper, a control strategy based on nonlinear ∞ approach is applied in a biped robot with torso, knees, and feet, that presents a passive dynamic walking. To obtain an anthropomorphic gait, the Foot Rotation I...
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Rigid legislation requirements on vehicle emissions and customer demands on comfort and efficiency have lead to a continuously increasing complexity of modern engine management systems, accompanied by a growing number...
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Three dimensional printing (3DP) process is me of the RP process technology that can fabricate three dimensional parts by jetting UV resin through piezo nozzle of print head in 3D SFFS using UV resin technology. As th...
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ISBN:
(纸本)9784907764289
Three dimensional printing (3DP) process is me of the RP process technology that can fabricate three dimensional parts by jetting UV resin through piezo nozzle of print head in 3D SFFS using UV resin technology. As this technology uses multi-nozzle, it can make high speed fabrication. It sends 3D computer-aideddesign (CAD) data to a print head and it produces 3D Solid Freeform Fabrication (SFF). In this research, the pattern driver which is developed. In this research, controls each piezo nozzle of multi-print. The three dimensional freeform data is used to jet resin on build tray of SFF system. And z table is controlled so that piles up regular thickness. The x-y table of SFFS to move the multi-print head should satisfy high speed and high accuracy. The proposed print head consists of 4-heads for UV resin and 4-heads for support material for fast fabrication. The system between controlsystem and multi-print head for the SFFS is also integrated.
Energy consumption of control actuators is an important issue in space systems, due to considerable cost of transferring supplies to orbit. In this paper, a chattering avoidance sliding mode controller is developed fo...
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During the last decade, Support Vector Machines (SVM) have proved to be very successful tools for classification and regression problems. The representational performance of this type of networks is studied on a cavit...
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A new design of GPS remote time and frequency calibration system is presented. Its hardware was composed with a time interval counter card, a GPS receiving modular and a controller. The counter card was manufactured w...
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ISBN:
(纸本)9781424406463
A new design of GPS remote time and frequency calibration system is presented. Its hardware was composed with a time interval counter card, a GPS receiving modular and a controller. The counter card was manufactured with modeled number GT200 by Guide Technology, Inc. The Trimble ThunderBolt GPS disciplined clock was used as the GPS receiving modular. A personal computer with Redhat Linux operation system was utilized for the controller. The software is written by C language which controlled the GPS modular, the counter card, and data collecting. The characteristic of the counter card and GPS receiving modular were performed. A series of test were executed to valuate this system. The short baseline common clock test with hydrogen maser was studied for the system noise level. The direct phase comparison in laboratory, GPS short baseline test in laboratory, and GPS field test within 10km between hydrogen maser and cesium dock were also experimented. Two methods were applied to evaluate the system performance and there were GPS all-in-view and phase difference comparison. The later one could illustrate the short-term frequency stability. The former method could demonstrate the longer term stability and time characteristic of the clock at remote site. The accuracy and stability of the experimental result of the short baseline common clock with hydrogen maser reached to a few parts of 10(-13) and the TDEV values were lower than the ITU-T G.811 requirements. The designed system with the capability could be applied for the remote time/frequency calibration and for the monitoring the performance of the primary reference clocks(PRC) of the digital telecommunication network, too.
A new design for a model-free learning adaptive control (MFLAC), based on pseudo-gradient concepts with compensation using neural network, is presented in this paper. A radial basis function neural network using diffe...
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In this work, the problem of force/position tracking for a robotic finger in compliant contact with a surface under non-parametric uncertainties is considered. In particular, structural uncertainties are assumed to ch...
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