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检索条件"机构=Science and Technology on Electro-Optic Control Laboratory AVIC Optronics"

共 48 条记录，以下是11-20 订阅

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Research on image shift compensation technology of optoelectronic platform based on Verilog algorithm

Research on image shift compensation technology of optoelect...

引用

2021 International Conference on Computational Modeling, Simulation, and Data Analysis, CMSDA 2021

作者： Yu, Yang Zhang, Honggang Gao, Junke Li, Pengqi Li, Li Science and Technology on Electro-Optic Control Laboratory Luoyang471000 China Luoyang Institute of Electro-Optical Equipment AVIC Luoyang471000 China

ISBN: (纸本)9781510651968

In order to effectively compensate the graph image drift problem generated in the photoelectric stabilized platform operational process, this paper uses a numerical control technology based on the Verilog language algorithm to perform speed command operations on the fast reflector, and operates the fast reflector to compensate the photoelectric stabilized platform image shift. The Verilog language algorithm used in the article is written in the field programmable gate array FPGA, and combined with RS422 to manipulate the fast mirror, which can effectively improve the control accuracy of the fast mirror. According to the simulation experiment, when setting the 3ms integration time, the Verilog language algorithm can make the fast mirror move more accurately than the single CPU, achieve better image shift compensation effect, and improve the performance of the photoelectric stabilized platform. © COPYRIGHT SPIE. Downloading of the abstract is permitted for personal use only.

关键词： Reflection

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Research of Command and Guidance technology Based on Integrated Joint Operation 1

引用

10th China Conference on Command and control, C2 2022

作者： Wang, Wenjing Wang, Zhaoyang Zou, Jie He, Jianliang Zhang, Hongbo Science and Technology on Electro-Optic Control Laboratory Luoyang471000 China Luoyang Institute of Electro-Optical Equipment of AVIC Luoyang471000 China

ISBN: (数字)9789811960529

ISBN: (纸本)9789811960512

Command and guidance are important components of future integrated joint warfare, and are important parts of improving and optimizing overall operational effectiveness. Based on the traditional command and guidance technology, the focus and direction of future command and guidance technology development are analyzed by combining the new combat concept and style. Focusing on the command and guidance combat process for the integration of command and fire control, we construct a command and guidance model based on the carrier fire control attack capability, and conduct a preliminary command and fire control integration command and guidance simulation. Finally, suggestions are given for future command and guidance technology development. © 2022, Chinese Institute of Command and control.

关键词： Integration

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RGB to L∗a∗b∗ Color Prediction Model Based on Color Cards 8th

RGB to L∗a∗b∗ Color Prediction Model Based on Color Cards

引用

8th International Conference on Cognitive Systems and Information Processing, ICCSIP 2023

作者： Zhang, Yong Zou, Jie Ma, Chao Gu, Yunpeng Ma, Jianwei College of Information Engineering Henan University of Science and Technology Luoyang471000 China Science and Technology on Electro-Optic Control Laboratory AVIC Optronics Luoyang471000 China

ISBN: (纸本)9789819980208

Color is a critical characteristic indicating the traits of an object and is widely used in computer vision technology. In order to ensure uniformity and device independence of color in image processing, standardized and normative color management are needed. L∗a∗b∗ color space is a device-independent expression of color values because it is uniform and independent of hardware devices. Therefore, in this paper, we compare four prediction models from RGB to L∗a∗b∗. The experimental platform was built to acquire digital images with Pantone color cards as sample data and extract RGB value. The real L∗a∗b∗ value is measured by colorimeter. And preprocess the original RGB value and L∗a∗b∗ value data, and establish four prediction models: linear, quadratic polynomial, neural network and extreme learning machine, by comparing preprocessed data with real data. Using four evaluation metrics (MAE, MSE, RMSE and R2), and scatter fit plots were used to compare results. The results show that the model based on extreme learning machine has the highest prediction accuracy, with MAE reaching 0.021, 0.017 and 0.010, MSE 0.0006, 0.0005 and 0.0001, RMSE 0.026, 0.021 and 0.031, R2 0.96, 0.97 and 0.96, respectively. Indicates that the extreme learning machine has good potential for application. © 2024, The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd.

关键词： Forecasting

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FAANet: Feature-Augmented Attention Network for Surface Defect Detection of Metal Workpieces 8th

FAANet: Feature-Augmented Attention Network for Surface Defe...

引用

8th International Conference on Cognitive Systems and Information Processing, ICCSIP 2023

作者： Gu, Yunpeng Zou, Jie Ma, Chao Zhang, Yong Zhang, Mengtong Ma, Jianwei College of Information Engineering Henan University of Science and Technology Luoyang471000 China Science and Technology on Electro-optic Control Laboratory AVIC Optronics Luoyang471000 China

ISBN: (纸本)9789819980178

Accurate segmentation of defects on the surface of metal workpieces is challenging due to the large-scale differences and complex morphological features. To address the problem of low accuracy in segmenting metal workpiece surface defects in complex scenes, we propose a Feature-Augmented Attention Network (FAANet) by studying the types of workpiece surface defects. The network adopts an encoder-decoder structure. In the encoding stage, VGG16 is used as the backbone to extract features at different depths of the metal workpiece surface. Moreover, a feature augmentation module is designed to refine the feature maps at different levels for the characteristics of the information contained in the features at different depths, emphasizing the detailed features, such as the edges of the defective targets. In the decoding stage, an efficient channel attention mechanism is fused in the network to make full use of the feature map with rich information after feature fusion. More relevant features are extracted through the interaction of different channel information to improve information utilization as well as segmentation accuracy. For the sample imbalance problem, a loss function supervised training model incorporating focal loss is designed to mitigate the negative impact of sample imbalance on the model performance. The results show that the proposed method achieves better segmentation results in detecting surface defects on metal workpieces in complex scenes than existing prevailed methods. © 2024, The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd.

关键词： Semantic Segmentation

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Research on micro-cantilever calibration method based on nano indentation technology 8

Research on micro-cantilever calibration method based on nan...

引用

8th Symposium on Novel Photoelectronic Detection technology and Applications

作者： Wang, Shaofei Luoyang Electro-Optical Equipment Research Institute of AVIC Henan Luoyang China Science and Technology on Electro-Optic Control Laboratory Henan Luoyang China

ISBN: (数字)9781510653122

ISBN: (纸本)9781510653115

With the deepening of the related research work of atomic force microscope (AFM), people can not only be satisfied with the morphology measurement function of AFM.[1,2] How to use AFM to carry out micro force measurement has gradually become one of the hotspots of AFM application research. Among them, the elastic coefficient of AFM micro cantilever is an important bridge connecting the AFM input signal and the force on the needle tip.[3] Therefore, the measurement of elastic coefficient of micro cantilever is an important premise for micro force measurement using AFM. According to the characteristics of rectangular micro cantilever and the practical problems faced in AFM measurement, the measurement technology of elastic coefficient of AFM micro cantilever based on nano indentation measurement technology is studied in this paper. The theoretical analysis and experimental results show that the nano indentation method can be used to calibrate the elastic coefficient of micro cantilever. © 2022 SPIE

关键词： Calibration

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Improved Unscented Kalman Filtering Algorithm Applied to On-vehicle Tracking System

Improved Unscented Kalman Filtering Algorithm Applied to On-...

引用

2021 International Conference on Computer, Internet of Things and control Engineering, CITCE 2021

作者： Chen, Yun Liu, Yi Luoyang Institute of Electro-optical Equipment of AVIC Science and Technology on Electro-optic Control Laboratory Luoyang China

ISBN: (纸本)9781665421843

In this paper, we study the problem of tracking aerial targets in a modified spherical coordinate system using an on-vehicle tracking system using infrared sensors. In this challenging scenario, to solve the problems of poor calculation stability and large amount of calculation of the traditional unscented kalman filter algorithm, this article introduces and adopts an improved unscented kalman filter algorithm. In Sigma sampling, the error variance matrix uses singular value decomposition (SVD) to select the simplex with the smallest skewness. Compared with the estimation algorithm based on the standard unscented kalman filter, the new algorithm effectively reduces the state estimation error and improves the tracking stability and tracking accuracy. © 2021 IEEE.

关键词： Singular value decomposition

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Research on Secondary Stability of Optoelectronic Platform Based on Fast Mirror

Research on Secondary Stability of Optoelectronic Platform B...

引用

2021 International Conference on Computer, Internet of Things and control Engineering, CITCE 2021

作者： Yu, Yang Zhang, Honggang Gao, Junke Shi, Pengjie Luoyang Institute of Electro-Optical Equipment AVIC Science and Technology on Electro-Optic Control Laboratory Luoyang China Luoyang Institute of Electro-Optical Equipment AVIC Luoyang China

ISBN: (纸本)9781665421843

In order to improve the stability accuracy of the photoelectric stabilized platform, this paper uses a coarse-precision combined control based on a fast mirror to achieve the secondary stability of the photoelectric stabilized platform. This method feeds back the residual error of gyro compass to the fast reflector, and adjusts and compensates it through the optical path, and the fast reflector has a higher working bandwidth and can greatly attenuate the disturbance. In this paper, the working principle of the fast reflector is introduced first, and then the second-level stability experiment is carried out by combining the fast reflector with the actual two-axis two-frame photoelectric stabilized platform mechanism. The experimental results show that under the action of a sinusoidal disturbance of 5Hz and 0. 12°, the stability accuracy of the platform at the first stage of stabilization is 11.8 μrad. After the second-stage stabilization of the fast mirror, the stability accuracy of the platform reaches 5.6 μrad, and the performance is improved by 52.5%. The results show that this method can effectively improve the stability accuracy and performance of the platform. © 2021 IEEE.

关键词： Photoelectricity

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STRATEGIES TO ENHANCE CONFIGURATIONS FOR HIGH-PRECISION MULTI-DISCIPLINARY OPTIMIZATION 32

STRATEGIES TO ENHANCE CONFIGURATIONS FOR HIGH-PRECISION MULT...

引用

32nd Congress of the International Council of the Aeronautical sciences, ICAS 2021

作者： Liu, Hua Li, Mingsuo Zhu, Ronggang Ding, Quanxin Zhou, Liwei Science and Technology on Electro-optic Control Laboratory China Luoyang Institute of Electro-optical Equipment of AVIC China Beijing Institute of Technology Beijing China

ISBN: (纸本)9783932182914

For aim to establish a high-precision sensor system configuration, this paper presents a new approach to the software architecture to enhance the multidisciplinary design frame that facilitates the reuse of existing components, the addition new ones, and the scripting of multidisciplinary optimization procedures. Firstly, some strategies applied to implement the necessary components of a high-precision optoelectronic structural design environment for complete sensor system configurations, and demonstrate the advantages with different parts studied, that is optical system module, electronic module, control module, and the relationship among these correlative components. At the core of the configuration is a core photonics to define the system function and role to give solutions to external users, and three so that more than three subjects will be applied cooperative. © 2021 32nd Congress of the International Council of the Aeronautical sciences, ICAS 2021. All rights reserved.

关键词： optical systems

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Generalized Inverse Source: Matter, Information and Energy

Generalized Inverse Source: Matter, Information and Energy

引用

Photonics for Energy 2021

作者： Hua, Liu Science and Technology on Electro-optic Control Laboratory China Luoyang Institute of Electro-optical Equipment of AVIC China Beijing Institute of Technology Beijing China

ISBN: (数字)9781510646360

ISBN: (纸本)9781510646353

In many fields of physics, there is a common inverse source problem, that is, there is a measured optical or electrical signal intensity distribution or scattering differential cross section to retrieve the lost phase information, so as to reconstruct the full wave function. The phase recovery of imaging system is one of these typical problems. The model and experiment based on theory play a role in the development of system optics. And then, we have obtained effective solutions. © 2021 SPIE.

关键词： Inverse problems

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Stereo nerve network: Systematic construction, computational process, and intelligent manufacturing 5

Stereo nerve network: Systematic construction, computational...

引用

Advanced Laser Processing and Manufacturing V 2021

作者： Liu, Hua Ding, Quanxin Li, Mingsuo Zhu, Ronggang Science and Technology on Electro-optic Control Laboratory China Luoyang Institute of Electro-optical Equipment of AVIC China Beijing Institute of Technology Beijing China

ISBN: (数字)9781510646346

ISBN: (纸本)9781510646339

In intelligent manufacturing system, a systematic method of constructing stereo vision using neural network is proposed, and the operation and control mechanism in practical operation is put forward. In particular, the concept of calculation process is established. And this method overcomes the complexity of a large number of calculations. And it has significant advantages in the system scientifically, the operation speed and the operability. © 2021 SPIE.

关键词： Stereo vision

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