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Two-wheeled mobile robot is known for advantages on performing better manuever in a confined space. It is a typical mobile robot with some features such as complexity, highly nonlinear, instability, multi-variable and strongly coupling. This research is aimed to design and develop the dynamic model and balance control strategy of the robot. A Gibbs-Appell equation is applied to build the dynamic model...
The control equations use the Navier - Stokes of three-dimensional viscous, compressible, isentropic, unsteady flows, and the spatial discretization uses the cell-center finite volume method to do the numerical simulation of the propagation laws of the compression wave when the high-speed train pass through the tunnel with the vertical shaft, and the simulation results are consistent with the on-site...
Based on the single column partial differential equation model for the industry chromatographic separation, the mathematical model of the Simulated Moving Bed chromatographic separation process is established from the flow and mass conservation relations of the SMB process. Method of line is used for the numeric model computations. Simulation results show that compared with the true moving bed model,...
This paper introduced the implementation of differential quadrature phase-shift keying (DQPSK) precoder employing parallel prefix network (PPN). Kogge Stone (KS) adder is a typical parallel PPN algorithm. An ameliorated KS algorithm was proposed and realized to achieve the precoder. With 78Mb/s and 128 parallel channels, 20 Gb/s DQPSK precoder was implemented in ML523. Results showed that the minimum...
This paper based on the flow field numerical simulation method to analyze the valves used for space instrumentation ,the flow field of high-pressure unloading valve was numerical simulation upon different structural parameters,thus it achieved the result of the pressure and velocity field. the effect of flow field and pressure velocity characteristic by the structural parameters was analyzed. The...
A new analysis method of reliability test data about low-voltage electrical appliance is proposed based on grey theory, which can be applied to solve small sample size problem. The conception, that is called ??gray stability??, is first proposed and defined notion and derivation of mathematical expression. It has important engineering significance in the field of reliability. The test data about electrical...
This paper presents an approach based on idle time windows (ITWs) and particle swarm optimization (PSO) algorithm to solve dynamic scheduling of multi-task for hybrid flow-shop. The idea of ITW is introduced, then the dynamic updating rules of the sets of ITWs are explained in detail. With the sets of ITWs of machines as constraints, the mathematical model is presented for dynamic scheduling of multi-task...
In this paper, we consider the problem of designing a planar linkage that generates the scissors action needed to drive a scale changing linkage. The movement is equivalent to guiding a hinged pair of bars such that their end-points follow a line. These two bars form the input to a series of modules in a deployable, or scale changing, linkage. The driving linkage is synthesized by coordinating the...
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