Journal of the Optical Society of America and Review of Scientific Instruments最新文献_第10页

Design of the scintillator imaging lens for the neutron imaging system at the 100 kJ-level laser facility. 100千焦级激光装置中子成像系统闪烁体成像透镜的设计。

Journal of the Optical Society of America and Review of Scientific Instruments Pub Date : 2022-04-01 DOI: 10.1063/5.0086782

Qiukai Li, Zhongjing Chen, T. Xu, Yadong Yan, Feng Wang, Junhua He

引用次数: 1

Probe-based microscale measurement setup for the thermal diffusivity of soft materials. 基于探针的软质材料热扩散系数微尺度测量装置。

Journal of the Optical Society of America and Review of Scientific Instruments Pub Date : 2022-04-01 DOI: 10.1063/5.0084891

M. Ryu, M. Akoshima, J. Morikawa

引用次数: 2

Suppression of ambient temperature-caused drift in a laser power stabilization system with a liquid crystal variable retarder in atomic gyroscopes. 液晶可变缓速器在原子陀螺仪激光功率稳定系统中对环境温度漂移的抑制。

Journal of the Optical Society of America and Review of Scientific Instruments Pub Date : 2022-04-01 DOI: 10.1063/5.0049994

Yue Niu, Lihong Duan, Jingxin Zhang, Jiong Huang, Yueyang Zhai, W. Quan

引用次数: 1

Open magnetic shielding for static and alternating field. 静、交变磁场开式磁屏蔽。

Journal of the Optical Society of America and Review of Scientific Instruments Pub Date : 2022-04-01 DOI: 10.1063/5.0083306

C. Gu, L. Lai, K. Zhao, N. J. Ren

引用次数: 0

Quasi-isentropic compression of LiH above 400 GPa using magnetocumulative generator. 利用磁累积发生器对400 GPa以上的LiH进行准等熵压缩。

Journal of the Optical Society of America and Review of Scientific Instruments Pub Date : 2022-04-01 DOI: 10.1063/5.0078422

X. Zhang, Z. Gu, Z. Xiao, F. Tan, X. Ye, Y. Tong, X. S. Tang, Z. Zhou, C. Cheng, J. Zhao, B. Luo, J. Li, X. Kuang, J. Zhao, C. W. Sun, C. L. Liu

{"title":"Quasi-isentropic compression of LiH above 400 GPa using magnetocumulative generator.","authors":"X. Zhang, Z. Gu, Z. Xiao, F. Tan, X. Ye, Y. Tong, X. S. Tang, Z. Zhou, C. Cheng, J. Zhao, B. Luo, J. Li, X. Kuang, J. Zhao, C. W. Sun, C. L. Liu","doi":"10.1063/5.0078422","DOIUrl":"https://doi.org/10.1063/5.0078422","url":null,"abstract":"The knowledge of high-pressure behavior of LiH is significant for the validation of fundamental theoretical models and applications in thermonuclear materials and potential energy supplies. The compressibility of 7LiH under isentropic compression at high pressure was investigated experimentally and theoretically. The experimental technique for quasi-isentropic compression with low-density materials was developed using the magnetocumulative generator CJ-100 and x-ray flash radiography. The x-ray images and extracted interface of the sample target in dynamic flash radiography experiments were obtained. According to each interface size of the target both before and after compression, the compression ratio of 7LiH and reference material aluminum was obtained. The density of the reference and using its known isentropic curve provide the pressure in the reference. The pressure in 7LiH was deduced from the pressure in the reference and using the calculated gradient correction factor. The quasi-isentropic data point at 438 GPa was obtained experimentally. A semiempirical three-term complete equation of state was constructed and validated for 7LiH using the theory of Mie-Grüneisen-Debye with experimental data from the literature. The quasi-isentrope data point is reasonably consistent with the theoretical results. The quasi-isentropic experimental techniques and results broaden the existing research scope and are practical and helpful to further validate theoretical models in the future.","PeriodicalId":54761,"journal":{"name":"Journal of the Optical Society of America and Review of Scientific Instruments","volume":"46 1","pages":"043906"},"PeriodicalIF":0.0,"publicationDate":"2022-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80015825","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

An instrument for in situ characterization of powder spreading dynamics in powder-bed-based additive manufacturing processes. 基于粉末床的增材制造过程中粉末扩散动力学的原位表征仪器。

Journal of the Optical Society of America and Review of Scientific Instruments Pub Date : 2022-04-01 DOI: 10.1063/5.0076235

Luis I. Escano, N. Parab, Qilin Guo, Minglei Qu, K. Fezzaa, W. Everhart, T. Sun, Lianyi Chen

引用次数: 5

A battery-powered over-voltage triggering method for two-electrode spark gaps in Marx generator. 一种马克思发电机两极火花间隙的电池供电过电压触发方法。

Journal of the Optical Society of America and Review of Scientific Instruments Pub Date : 2022-04-01 DOI: 10.1063/5.0070566

Xuedi Liu, Huibo Zhang, Zicheng Zhang, Shifei Liu, Haoran Zhang

引用次数: 0

Influence of magnetic field on the seismometer in vibration correction for atom gravimeters. 原子重力仪振动校正中磁场对地震仪的影响。

Journal of the Optical Society of America and Review of Scientific Instruments Pub Date : 2022-04-01 DOI: 10.1063/5.0081148

Kun Qi, Yao-Yao Xu, Xiao-Bing Deng, Lele Chen, Qin Luo, Minkang Zhou, Xiao-chun Duan, Zhongkun Hu

引用次数: 1

Anomaly detection of complex magnetic measurements using structured Hankel low-rank modeling and singular value decomposition. 基于结构化Hankel低秩建模和奇异值分解的复杂磁测量异常检测。

Journal of the Optical Society of America and Review of Scientific Instruments Pub Date : 2022-04-01 DOI: 10.1063/5.0088254

Xinglin Zhang, Huan Liu, Zehua Wang, H. Dong, J. Ge, Zheng Liu

{"title":"Anomaly detection of complex magnetic measurements using structured Hankel low-rank modeling and singular value decomposition.","authors":"Xinglin Zhang, Huan Liu, Zehua Wang, H. Dong, J. Ge, Zheng Liu","doi":"10.1063/5.0088254","DOIUrl":"https://doi.org/10.1063/5.0088254","url":null,"abstract":"The magnetic anomalies generated by the ferromagnetic targets are usually buried within uncontrollable interference sources, such as the power frequency and random noises. In particular, the variability of the geomagnetic field and the low signal-to-noise ratio (SNR) of the magnetic anomalies cannot be avoided. In this paper, to improve the performance of magnetic anomaly detection (MAD) with a low SNR, we propose a novel structured low-rank (SLR) decomposition-based MAD method. In addition, a new framework based on the SLR and singular value decomposition (SVD) is constructed, dubbed SLR-SVD, and the corresponding working principle and implemented strategy are elaborated. Through comparing the SLR-SVD with two state-of-the-art methods, including principal component analysis and SVD, the results demonstrate that the proposed SLR-SVD can not only suppress the noise sufficiently, i.e., improving 55.26% approximately of the SNR, but also retain more boundary information of magnetic anomalies, i.e., decreasing approximately 68.05% of the mean squared error and improving approximately 28.47% of the structural similarity index.","PeriodicalId":54761,"journal":{"name":"Journal of the Optical Society of America and Review of Scientific Instruments","volume":"93 4 1","pages":"045107"},"PeriodicalIF":0.0,"publicationDate":"2022-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75100973","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 7

Tracking moving target for 6 degree-of-freedom robot manipulator with adaptive visual servoing based on deep reinforcement learning PID controller. 基于深度强化学习PID控制器的自适应视觉伺服六自由度机械臂运动目标跟踪。

Journal of the Optical Society of America and Review of Scientific Instruments Pub Date : 2022-04-01 DOI: 10.1063/5.0087561

Fei Wang, Baiming Ren, Yue Liu, Ben Cui

{"title":"Tracking moving target for 6 degree-of-freedom robot manipulator with adaptive visual servoing based on deep reinforcement learning PID controller.","authors":"Fei Wang, Baiming Ren, Yue Liu, Ben Cui","doi":"10.1063/5.0087561","DOIUrl":"https://doi.org/10.1063/5.0087561","url":null,"abstract":"In this paper, an image-based visual servoing (IBVS) controller with a 6 degree-of-freedom robotic manipulator that tracks moving objects is investigated using the proposed Deep Q-Networks and proportional-integral-derivative (DQN-PID) controller. First, the classical IBVS controller and the problem of feature loss and large steady-state error for tracking moving targets are introduced. Then, a DQN-PID based IBVS method is proposed to solve the problem of feature loss and large steady-state error and improve the servo precision, as the existing methods are hard to use for solve the problems. Specifically, the IBVS method is inherited by our controller to build the tracking model, and a value-based reinforcement learning method is proposed as an adaptive law for dynamically tuning the PID parameters in the discrete space, which can track the moving target and keep the servo feature in the field of the camera. Finally, compared with the different existing methods, the DQN-PID based IBVS method has merits of higher accuracy and more stable tracking, or generalization.","PeriodicalId":54761,"journal":{"name":"Journal of the Optical Society of America and Review of Scientific Instruments","volume":"29 1","pages":"045108"},"PeriodicalIF":0.0,"publicationDate":"2022-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74633433","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1