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Fiber-optic photoelectric sensors provide a sensing solution for applications involving small targets or unfavorable conditions. It is, however, recognized that photoelectric signal is subject to temperature drift, and faulty detection could be resulted if proper compensation is not considered during phase of design. In this paper, principle of fiber-optic photoelectric sensors is formulated, and...
In manufacturing industries, two symmetric cylinders of an electro-hydraulic motion system are required to move synchronously for good quality of products and for long lifetime of the machine. In this paper, a robust model-based predictive control (MPC) algorithm is presented for satisfactory performance in terms of tracking and synchronization. First, the synchronization error between different motion...
A novel sound localization design using arrayed integrate and fire neuron circuits is discussed in this paper. This method is inspired from barn owl's unique method of locating prey. Unlike most of the existing techniques, it is computation free. System structure, experiment and simulation results, and analysis are described. A three-level hierarchical design is used to improve accuracy for a large...
A lumped parameter model (LPM) is presented to model and analyze the main modes of an ultra-precision stage. The modes of actuator system, measuring system and their summation are discussed based on the analysis of the LPM. Since the measuring system is a coupled and nominal symmetric system, the influence of asymmetry in stiffness to the final visible frequency response functions (FRFs) is examined...
This paper investigates the new results on ℒ2−ℒ℞ filter design for delayed stochastic systems by delay decomposition approach. Based on the Lyapunov functional method, sufficient condition are obtained to ensure the error systems are mean-square asymptotically stable. Then the ℒ2−ℒ℞ filters are designed in terms of linear matrix inequalities (LMIs). In order to develop less conservative results, a...
This paper presents a new method to efficiently determine the initial orientation of a Small Aerial Vehicle (SAV), using a combination of inexpensive sensors (three magnetometers and three accelerometers). The feature of this method is that the whole process is accomplished in a dynamic state and there is no need for calibration information. To complete the task, a motion model is added into calculation,...
This paper proposes a distinguishing design plan—submunition with hat shape fin, aiming to investigate its retardation effect. Based on the aerodynamic model established under environment of ICEM CFD, the resistance coefficient for subsonic fall of the submunition is calculated by computer, then the trajectory equations are calculated, the results indicate that hat shape fin can effectively slow the...
In order to explore the solving method of unexploded cluster munitions, the improved method of cluster munitions has been analysed, and three kinds of utility function of improved method have been established based on multi-dimension principles decision-making method. Also, the weight of all the principles have been determined, sensitivity of all the plans have been analyzed. Results show that self-destruction,...
A new method on the simulation of the floating automatic of artillery is presented in this paper. The calculation expressions of floating automatic spring forces and hydraulic resistances are deduced by analyzing the mechanical characters of the artillery. The recoil resistance is calculated in a new way based on the finite element method using the APDL (ANSYS parametric Design Language). During the...
The full paper begins with the importance of electro-hydraulic pump which is a highly integrated combination of electric motor and hydraulic pump. The development of electro-hydraulic pump, which integrates interdisciplinary theories, in our opinions, does study on all kinds of performances. We now present our finite element model on flow and temperature field of the fluid which we believe can much...
This paper presents a T-S fuzzy hyperbolic model for unknown nonlinear systems, by constructing a new Lyapunov function, the stability conditions of the open-loop system are given via linear matrix inequalities (LMIs). Then the parallel distributed compensation (PDC) method is used to design a fuzzy controller, and the asymptotic stability conditions of the closed-loop system are formulated by LMIs...
The segmental cycle slip of original distance data of a certain radar appears, and the traditional method can not process data. Based on this, the data fusion of exterior trajectory measurement equipment is calculated inversely, the difference of original data and inverse calculation data is done, and the scatter diagram of residual data is plot, detecting the existence of distance cycle slip. The...
Diffusion optical tomography in a heterogeneous turbid medium with the use of frequency-domain is in research, as it can provide the great significance optical parameters used to reconstruct and then we can obtain the new physiological information about biological tissue function and pathological transformation. In this paper, we introduce a simulation for the system of near-infrared diffusion optical...
A modeling method for shipboard power network static vulnerability analysis is proposed from a network theoretic prospect, to study the survivability of shipboard power system. In this model, two statistical indicators, which are electric betweeness of node and that of cabin, are defined to indicate the importance of network elements and element groups, and the bus transfers are modeled as node couples...
The aim of camera calibration is to estimate the internal an external parameters of each camera. With these parameters, the vision measurement applications can be achieved. This paper introduced a new method of calibration for camera nonlinear model. The model will explain how the distortion turns out, involved radial bias, and thin prism distortions. The proposed calibration procedure consists of...
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