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Some analyses and researches are done about networked control systems (NCS) those are based on the new Smith predictor and internal model control (IMC) from the system structures in this paper. The research and simulation results show that the choice of strategy of the new Smith predictor is more flexible than internal model control, but the adjusting parameter of the internal model control is relatively...
This paper proposes a method for avoiding large amount of data saving and reading during the reconstruction of forward-backward time-stepping (FBTS) method using data compression and decompression method. Data compression and decompression are conducted by the cosine transform. A reconstruction example is shown to demonstrate the effect of the proposed method. The reconstruction result with data compression...
This paper presents fast sampling inspection method based on the accelerated degradation test of the smart meters. This method uses the pseudo-life data obtained by the accelerated degradation test, then conducts distribution analysis, including distribution fitting and goodness-of-fit test to determine the final distribution of the pseudo-life data, and then choose sampling inspection method of reliability...
In the accident of Dalian Xingang oil pipeline explosion, on July 16th 2010, the 3.0-5.0μm bands thermal infrared sensor, which was equipped in the rescue helicopters from the Ministry of Transportation, was successfully applied to oil spills monitoring and detection in accident waters. By abstracting oil/water contrast from the information collected within specific distances far from the sensor position,...
A method based on pseudo life distributions of multiple parameters was proposed to evaluate the reliability and life of smart meter. Firstly, distributions were determined on the basis of getting the pseudo life of each parameter on each accelerated stresses. Secondly, reliability functions of each parameter were established integrated with the acceleration model, then the point estimates and covariance...
This paper proposes a modified real genetic algorithm (MGA) for the synthesis of sparse linear arrays and presents the basic steps of the MGA in detail. The designing requirements of the shaped-beam patterns are satisfied by using the MGA to optimize the position and excitation of the elements under the given precondition of the number of elements, aperture and minimum element spacing. The finally...
Considering the problem that the iteration number of video moving object locating method based on subtractive clustering existing a lot of uncertainties, a new video moving object locating method based on subtractive clustering introducing eigengap was proposed. Considering the data density function of subtractive clustering method, affinity matrix and the diagonal matrix was constructed, then eigenvalue...
In order to improve the accuracy of electricity consumption forecasting in smart grid, a novel penalized weighted kernel partial least squares algorithm is presented. The original inputs are mapped into a high dimensional feature space to realize the linearization of nonlinear problems. The partial least squares algorithm is used to extract the principal component to reduce the dimensional of data...
For the multi-loop networked control systems with limited resources, this paper puts forward a new scheduling method. The method directly bases on the two control performance parameters: error and error change rate. Combined with human-simulated intelligent thoughts, by setting deadband in the controller, and shows the new scheduling method's advantages from theory analysis. Finally do simulation...
In order to improve the performance of the control algorithm, this paper uses the good anti-interference ability of fuzzy control, combining with the human-simulated intelligent control; design a human-simulated intelligent fuzzy control algorithm. The algorithm both have the anti-interference ability of fuzzy control, and can take consideration to the stability, the speed and the accuracy together...
We experimentally demonstrated the generation of a plasma grating induced by interaction of two ultraviolet filaments. The optical breakdown of air is observed when intense infrared pulses were tightly focused onto the plasma grating.
To aim at the network delays in the industrial control process and uncertain object model, we add a feedback filter into the feedback loop of the traditional internal model controller, which we call it two-degree-of-freedom internal model controller for the networked control system, so that we can adjust the track and the robustness respectively. The results of the simulation show the validity of...
To aim at the network delays in the networked control systems, an internal model control algorithm is proposed. This method makes that the network delays don't need to be measured, identified or estimated on line, and the nodes don't need the clock signal synchronization. Moreover, it adapts to the environment which has random, variant and uncertain delays, more than dozens of sampling periods, some...
The carrier frequency estimation algorithm based on high-order cyclic cumulants does not need a training sequence. Due to the fact that the high-order cycle can suppress the stationary and non-stationary Gaussian noise, the algorithm is tolerant to the noise mentioned above. The computation of the algorithm is deduced in this paper. It shows that if large searching range of carrier frequency and high...
In this paper, the problem of balancing the noise removing and the image details preserving is considered. To remove noise adaptively, local dictionaries and sparse coding techniques are used. For a noised image patch, the local dictionary corresponding to it and the sparse coding technique are used to generate the sparse coding vector of the given patch. Then the noise of the given patch can be removed...
The core of image denoising is making a trade-off between removing noise and preserving details of noised image. To remove noise, the denoising algorithm based on K-SVD is employed in this paper. Though the power of such denoising algorithm has been verified by a mount of experiments, many meaningful details of noised image cannot be well maintained. To preserve details of noised image, therefore,...
According to the theory of traditional Chinese medicine (TCM), the tongue's color, texture and shape can reflect a person's physical health. Therefore, the tongue image analysis and matching are playing more and more important role in the tongue image's computer auxiliary diagnosis in TCM. Currently, the majority of the existing tongue image analysis methods are based on the single image feature (such...
Spectrum sensing is the premise of cognitive radio, which determines the communication quality of the total system. For the cognitive nodes far away from the primary user, the probability of correct detecting drops clearly because of the great fading, no matter they spend more time sensing. Cooperation between relay nodes can enlarge the valid transmit distance and improve the quality of communication...
Enterprise innovation networks are the systemic response for innovation complexity. Using relevant theory of social network analysis properties of enterprise innovation networks can be divided into two dimensions, that is structural attribute and relational attribute. Based on the review and analysis of a lot of relevant literatures, we proposed the hypothesis between innovation performance and each...
Single-phase smart meter as a key part of State Grid, the reliability of it has already become a problem not allow of being neglected. In this paper, a reliability enhancement testing method on single-phase smart meters is developed. The main sensitive stress and the weak parts which influence the reliability of single-phase smart meter have been discussed based on the result of historical date analysis...
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