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Maglev train is a new urban transportation tool. Track is considered as a component of maglev transportation system and it would directly affect the safety of train operation. An algorithm based on triple threshold filtering is put forward to conduct detection of maglev track, which can be used to filter abnormal points to judge the vertical suspected irregularity of track. In the scheme, the threshold...
This paper studied the second-order triangle formation control problem, in which there is a fixed sink and two mobile agents. In our setup, the specified triangle is characterized by only interior angles constraints. For each agent, only bearing of the sink, bearing of the other agent and the velocity of itself can be measured in its local frame. Moveover, the mobile agents exchange the measured information...
With the exploding growth of data, the computational complexity required by learning Support Vector Machine (SVM) lays a heavy burden on real-world applications. To address this issue, parallel computational techniques can be employed such as the Graphics Processing Units (GPUs) and MapReduce model. As it is well known, GPUs are microprocessors on a multi-core architecture which reveal high performance...
This electronic document is a “live” template and already defines the components of your paper [title, text, heads, etc.] in its style sheet. An electromagnetic launch system based on brushless permanent magnet linear motor is proposed. The permanent magnet linear motor is in the form of bilateral and moving magnet structure, which can reduce the normal force and avoids dragging line of power supply...
Track maintenance is very important in the public transport management activities and it requires a reliable track state database. As emerging rail transport, the maglev train lacks such a database. Special track inspection car can only work when traffic is stopped. In this way, the rail status collection efficiency is low and the maintenance cost is also increased. Track inspection device can be...
A novel 7-DOF humanoid manipulator used to play table tennis is presented and the inverse kinematics, by which the anthropomorphic solutions can be obtained, is established according to the architecture of the manipulator. The manipulator moves very fast when playing the table tennis, and thus it suffers from various joint constraints, such as angular acceleration constraint, angular velocity constraint...
Accurate estimation of longitudinal vehicle speed using general in-vehicle sensors like wheel speed sensors and accelerometers is crucial for good performance of vehicle dynamic control systems. Most of passenger vehicles are two-wheel drive, which provides speed measurement by wheel speed sensors of non-driven wheels. However, when wheels are under braking, this method is not reliable enough since...
Energy utilization efficiency (EUE) is low when an ultracapacitor bank directly supplies power for an electromagnetic aircraft launcher (EMAL). To solve this problem, a boost converter is added between the ultracapacitor bank and the linear acceleration motor of the EMAL. The difference between the terminal voltage of the ultracapacitor bank and the peak back electromotive force of the linear motor...
Ant colony algorithms as a category of evolutionary computational intelligence can deal with complex optimization problems better than traditional optimization techniques. An accelerated ant colony algorithm is proposed in this paper to tackle complex nonlinear system optimization problems by using a new objective-function-based heuristic pheromone assignment approach for pheromone update to filtrate...
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