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Both the plant parameter4 and delay time of the system may vary in the time-varying system, which makes system identification relatively complex. In this paper, a new system identification algorithm based on subspace method and cross-correlation function is proposed to identify system parameter and time-delay simultaneously. The time delay is identified with the calculation of the cross-correlation...
In order to meet the requirement of high-compact and hard-real-time outdoor navigation system, to solve the problem of invalid satellite navigation during GPS-denied period, a multi-sensors integrated navigation system is designed in this study. The system is fused with accelerometer, gyroscope, satellite receiver, binocular vision camera and barometer. The Kalman Filter, which is designed for model...
We investigated the behavior of a spherical intruder in a 3-D vertically vibrating small granular system. Vibration was represented as z=Asin(2πft). The surface formation and the rising time of the intruder, trise, were proven to be influenced by both vibration and system parameters. We focused on the effects of vibration frequency: f, dimensionless accelerator: Γ=(4π2Af2)/g and air pressure inside...
To extract polysaccharide of Camellia Cake, cellulase-assist method was used. The extraction conditions were: temperature 50°C; time 3h; adding amount of cellulase 0.35%. The extract rate of camellia cakes polysaccharide is 26.62%, The adequacy of this model was confirmed.
This paper deals with lifetime maximization for energy constrained wireless networks with inter-session network coding. The problem of lifetime maximization is first formulated, and then transformed into a linear programming problem. Using Lagrangian dual decomposition, it is further converted into a dual problem that consists of two subproblems: lifetime optimization and network optimization, and...
The network simulation (NS) is an important issue in the study of network technology. However, The error between the network performance simulation on split-object model and the true network environment is considerable apparent. In order to obtain the NS result approaching the reality, in this paper, we analyze the structure of split-object mode and find reasons to cause the error. According to the...
The pork quality involves multifaceted characters. The producers, sellers, consumers and slaughters have different requirements in the same process, so we should use various indexes to evaluate the pork grading. In this paper, we measured the horizontal length, fat thickness and lean meat content of different parts, then calculate the lean percentage of pig carcass, and record the artificial grading...
The large capacity nuclear power plants have been widely constructed in recent years to cope with social economic development and electrical energy demands. Consequently, it is necessary to be aware of nuclear power plant (NPP) dynamic characteristics in order to study the transient and midterm dynamic process of power system. Due to lacking suitable NPP model which is described the detail characteristics...
In this paper, we propose a dynamic mathematical model for nuclear power plant (NPP) reactor, and give an implementation in Power System Analysis Software Package (PSASP) through a user-defined program. NPP is modeled with a bipartite model that consists of the neutron dynamics module and thermodynamics module. Through the simulation results of NPP reactor under different disturbances, a conclusion...
Established the mathematical modules of pressurized water reactor (PWR) nuclear power plant (NPP) for the studying of the interactions of the power system and the nuclear power plant after its connecting to system, then set up the user-defined model of PWR NPP using the user-defined modules of the Power System Analysis Software Package (PSASP). Calculate the dynamic traits of PWR NPP without regulating...
Inertial measurement unit (IMU), consisted of three mutually-perpendicular ring laser gyros (RLG) and three accelerometers, is an important part of RLG-based strap-down inertial navigation systems (SINS). RLG provides measurement of change in vehicle attitude or its turn rate with respect to inertial space. Accelerometer provides measurement of specific force. These measurements provided by gyros...
A mathematical model, the surface–particle–emulsion heat transfer model (SPE model), is developed. Considering the variance of voidage in emulsion in the vicinity of an immersed surface, heat transfer near the surface is treated as that through dispersed particles touching the surface and through the emulsion when the distance from the surface is larger than one particle diameter. A stochastic model...
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