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Since system identification is closely related to control theory it is quite convenient that common tools of control may prove to be useful for identification as well. Semidefinite programming is now considered as a standard tool in control theory, however its applications for identification purposes are rare. This paper shows how L1 identification of the ARX model structure can be formulated as a...
This paper describes two software tools to determine the overall trend of network signals: Matlab and Excel. Their implementation is shown through several characteristic examples from network environment. The appropriateness of different types of trends is also discussed.
A Vernier Gate-Ring-Oscillator (GRO) Time to Digital Converter (TDC) is proposed and implemented in 90-nm CMOS process technology. It utilizes two GRO chains as the delay lines. The time resolution is determined by the difference between two delays, so not limited by the process. Moreover, the quantization noise can be first-order shaped by the gated behavior in the oscillators, which further improves...
An analog baseband chain for a Synthetic Aperture Radar (SAR) receiver implemented in a 130nm CMOS technology is presented in this paper. Occupying 0.23mm2 of silicon area, the baseband chain consists of a three-stage Variable Gain Amplifier (VGA), a 5th-order gm-C Low Pass Filter (LPF) and an Output Buffer (OBUF). The gain of the chain can be controlled by tuning the control voltages of the VGA and...
On-chip power supply noise has become a bottleneck in 3D ICs as scaling of the supply network impedance has not been kept up with increasing device densities and operating currents with each technology node due to limited wire resources. In this paper we proposed an efficient and accurate model to estimate peak-to-peak switching noise, caused by simultaneous switching of logic loads along a vertical...
Time synchronization is one of the key points in distributed real-time computer system. At first, a time synchronization method under 1PPS signal is put forth. Secondly, two kinds of relevant synthetic disturbance are analyzed, and time synchronization logic is studied to cope with the disturbance. Arena software is chosen to model and simulate the time synchronization procedure. At last, the whole...
To solve the non-uniformity problem of multi Time Delay Integral Charge Couple Device (TDICCD) mosaic camera, a non-uniformity correction algorithm is proposed and implemented on Field-Programmable Gate Array (FPGA) platform. Firstly, the generation and definition of non-uniformity are introduced; several common non-uniformity correction methods are discussed. Secondly, the correction algorithm is...
Most of the current sensorless control schemes for BLDC (Brushless DC) motor are based on full-bridge driver. However, half-bridge driver draws a lot of attention due to its simpler structure, smaller occupied volume, lower power loss, easier control scheme and lower production cost, and it has been successfully utilized in several applications. Inspired by these applications, this paper presents...
As is known to all, luminance and luminance distribution are both important factors influencing people's impression of the luminous environment. The traditional measuring devices are hard to meet the demand of lighting practice. A CCD-based luminance meter could evaluate the luminance of several small portions of a surface (“point” luminance). Although some manufactures have already produced reliable...
In this paper, mathematical morphology and its application on suppressing the noises in polluted insulator discharge acoustic emission signal are studied. After analyzing the typical characteristics of polluted insulator discharge signal, edge detection and Top-Hat Transform are adopted to suppress the noises in acoustic emission signal. Both of the two methods are able to remove noises in polluted...
In recent years, Full-Authority Digital Electronic Control (FADEC) system needs some component redundancy in order to attain sufficient reliability. So sensors failure diagnosis method is developed in this paper. Accommodation filters have been used in hard-failure and simulations have been done in fault sensors in the paper. From the simulation results, the conclusion can be deduced that the fault...
The accurate measurement of the pulverized-coal concentration in the powder-transmission pipe of the coal pulverizing system of thermal power plant can effectively reflect the operation efficiency of the system, and the preprocessing of several key variables, that are adopted to represent the pulverized-coal concentration, is an important step. In this paper, we propose a preprocessing method based...
Abstract-Deficiencies and excess of soybean's plant nitrogen is the key of soybean nutritional diagnosis. Applying image processing technique, this paper studied the leaf images of the six stages of soybean growth, which nitrogen fertilizer applied were 0%, 50%, 100% and 150%. Using image preprocessing, the noise of source image was removed and the areas of interest were enhanced, leaves and background...
Minimum covariance spectrum (MCS) estimation method is not robust in alpha stable distribution because of no finite covariance. A pseudo-power spectrum estimation method based on fractional low-order covariance (FLOC) matrix is proposed in this paper to improve MCS estimation method. The pseudo-power of a frequency point can be obtained by using FLOC matrix, and its pseudo-power spectrum (PPS) can...
The area aerial defense antimissile multi-sensor system always need to assure to accomplish the mission, and try to enshroud itself possibly at the same time. Therefore, the sensor management system must reduce the use of resource furthest on the premise of meeting the tracking precision, especially reduce the initiative-sensor boot-strap time. According to this purpose, we discuss a sensor management...
In order to investigate the physiological effects of airport noise exposure on organisms, in this study, we exposed Sprague-Dawley rats in soundproof chambers to previously recorded aircraft-related noise for 36 days. For comparison, we also used unexposed control rats. Noise was arranged according to aircraft flight schedules and was adjusted to its weighted equivalent continuous perceive noise level...
In this research, the combination of modal data is used to identify the damage of a FEM model using neural networks. The identification ability with different levels of noise and incomplete mode shapes are also investigated. It has been proved that the neural network using combination of modal parameters as input has a excellent identification ability with ideal error tolerance and robustness. Numberical...
This paper provides on effective Shuffled Embedded Technique (SET) to eliminate the drawback of substitution technique. Using the genetic algorithm, message bits are embedded into multiple, vague (blurred) and higher LSB layer in order to increase robustness, which is achieved by embedding secret messages in digital audio stream. Additional careful considerations are taken against the premeditated...
We present the calculation of noise expressions of low voltage amplifiers by applying symbolic nodal analysis and using nullors. The nullor equivalents of the MOSFETs include only the dominant parasitic elements in order to generate a simplified symbolic noise expression, which provides a good insight to improve the design of low voltage amplifiers. The generated symbolic noise expressions are compared...
We consider statistical data analysis in the interactive setting. In this setting a trusted curator maintains a database of sensitive information about individual participants, and releases privacy-preserving answers to queries as they arrive. Our primary contribution is a new differentially private multiplicative weights mechanism for answering a large number of interactive counting (or linear) queries...
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