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The pathological status of epilepsy can be revealed by the cerebral functional connectivity analysis. The majority of investigations in this field focused on the functional magnetic resonance imaging (fMRI). In consideration of the high temporal resolution of electroencephalogram (EEG) signals, a causality analysis based on the partial directed coherence (PDC) algorithms was applied to explore the...
In this paper, a semi-physical simulation platform of robot teleoperation system is designed, and a combined control approach using Jacobian matrix and Proportional-Derivative (PD) algorithm is proposed. A digital low-pass filter is designed to eliminate noise signal caused by hand-vibration of surgeons. The advantages of the proposed approach include easy implementation, real-time response and accurate...
Very fast transient over voltage (VFTO) is a kind of phenomenon which commonly occurs in gas insulated switchgear(GIS), and is also receiving more and more attention since it may endanger GIS internal insulation and secondary equipment. For this reason, combining with the VFTO phenomenon in GIS, this paper completed the numerical simulation calculation of VFTO transient process gone through by gas...
SF6 gas is an important insulated medium and is wildly used in electric power industry for gas-insulated equipment; this paper aims to deeply understand the streamer discharge mechanism in SF6, and to better use of SF6 gas in the electrical equipment. The two dimensional and self-consistent fluid model of the gas discharge is established based on the electron and ions continuity transfer equations...
By proposing a new idea of use of program slicing techniques to determine the independence of the critical safety variables. Mainly to solve the independence of critical security components within a class of critical safety variables be judged is not accurate, complex issues. This idea can intuitive and accurate calculation of the member variable for the category of a variable that is specific criticality...
Puncturing mud robot is a kind of trenchless device that can walk by itself in the earth. There are abroad appliance foreground and developing value as it can mainly pave PE pipe, PVC pipe, cable and optical fiber cable under the mud. In this paper, turning and driving capability are analyzed and through researching on impacting construction of steerable air-powered impact mole in trenchless technology...
Puncturing mud robot is a kind of trenchless device that can walk by itself in the earth. There are abroad appliance foreground and developing value as it can mainly pave PE pipe, PVC pipe, cable and optical fiber cable under the mud. Through researching on impacting construction of steerable air-powered impact mole in trenchless technology at home and abroad, the driving device of puncturing mud...
The association rule mining aims at the relationships between the items of the transaction data. Because the transaction data often has characteristics of time stamps, the support value and the confidence value of a certain rule are not quite the same in different periods of time. It is of great help to do further study and make a strategic decision to set up a Meta-association rule for the association...
A control scheme of ANN-based PID controller is developed here to reach high precision tracking control for an electro-hydraulic servo system. The PID controller is used as a feedback controller to guarantee the system stability. The cerebellar model articulation controller (CMAC) neural network is used as a feed-forward compensator to identify the inverse system dynamics model. The CMAC and the PID...
With the development and research deeply on the ocean, underwater mating technique has received wide application such as exploration of ocean bed, scientific review, sunk ship salvage, underwater manufactory, deep ocean workstation, aid submarine lifesaving and military affairs field. In this paper, through researching on mating device at home and abroad, by using rotational skirt scheme, mating device...
"Dragon of puncturing mud" Robot is one kind robot of special type, as it can pave PE pipe, PVC pipe, cable and optical fiber cable under the mud, there are abroad appliance foreground and developing value. This paper presents the characteristics of the world representative air-powered mole of which the direction is controllable. According to the turning principle of "Dragon of Puncturing...
The mining of association rules mainly aims at the strong association rules, but lacks of efficient methods to mine the rules within the item sets that occur not much frequently. With the separation of the items by their time property, this paper discusses a new method of mining the lightly-supported Boolean association rules.
With the continuous development of ocean resource, detection and action of human in the seabed will be frequent. Underwater mating technology is a key technology for the transfer of people who live in the submarine and the supply of necessary goods. In this paper a novel underwater intelligent mating device with articulated skirt is designed. Mechanical structure, sealing principle, kinematics analysis...
In sagittal plane, 8-link model of biped with toe-joint is established and predigested into inverted pendulum. Inverse kinematics of single leg is analyzed, and Lagrange locomotion equation is established. The barycenter point motion track in space is presented and the effect of the gait with toe-joint in single leg supporting phase is analyzed by kinematics and dynamics simulation in Matlab. Through...
"Dragon of Puncturing Mud" robot is a special kind of robot which integrates equipment briefness and manipulating facility of impacting mole in trenchless technology, and high reliability, better aptitude and strong self applicability of robot designing - greatly increasing trenchless technology level. The robot is mainly made up of three parts including taper head, turning device and impacting...
Sensor deployment, to a large extent, affects the performance and effectiveness of wireless sensor networks (WSN). For the conservation of energy, selecting only a subset of nodes is active and others are sleep. The problem is represented by the connected dominating set (CDS) of the graph, and the minimum connected dominating set (MCDS) is NP-hard for arbitrary graphs. The deployment is either deterministic...
Move-in-Mud Robot is one kind of special type robot under water using to salvage sunk ship and belongs to limited working robot[1,2]. It integrates creeping principle of crawling biology and robot design of high reliability, high aptitude and self-adaptability to realize robotization of perforation in mud. In this paper the system design is introduced about Move-in-Mud Robot, and which mainly includes...
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