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Conditional neural processes for model-based reinforcement learning with stability guarantees 具有稳定性保证的基于模型的强化学习的条件神经过程
Zhongguo Kexue Jishu Kexue/Scientia Sinica Technologica Pub Date : 2023-11-01 DOI: 10.1360/sst-2022-0321
JiaNan YANG, YiHang DING, YiMin ZHU, Bo CAI, YuTing MA, YunPeng LI, MingHao HAN
{"title":"Conditional neural processes for model-based reinforcement learning with stability guarantees","authors":"JiaNan YANG, YiHang DING, YiMin ZHU, Bo CAI, YuTing MA, YunPeng LI, MingHao HAN","doi":"10.1360/sst-2022-0321","DOIUrl":"https://doi.org/10.1360/sst-2022-0321","url":null,"abstract":"","PeriodicalId":37925,"journal":{"name":"Zhongguo Kexue Jishu Kexue/Scientia Sinica Technologica","volume":"53 3","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135455954","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
路面不平度对遥控武器站伺服性能的影响分析 路面不平度对遥控武器站伺服性能的影响分析
Zhongguo Kexue Jishu Kexue/Scientia Sinica Technologica Pub Date : 2023-10-01 DOI: 10.1360/sst-2023-0216
Xin Xie, Lianchao Zhang, Jieji Zheng, Baoyu Li, Dapeng Fan
{"title":"路面不平度对遥控武器站伺服性能的影响分析","authors":"Xin Xie, Lianchao Zhang, Jieji Zheng, Baoyu Li, Dapeng Fan","doi":"10.1360/sst-2023-0216","DOIUrl":"https://doi.org/10.1360/sst-2023-0216","url":null,"abstract":"","PeriodicalId":37925,"journal":{"name":"Zhongguo Kexue Jishu Kexue/Scientia Sinica Technologica","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136198925","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
基于连续化制备的核壳结构压感纤维阵列式精准轮廓识别垫 基于连续化制备的核壳结构压感纤维阵列式精准轮廓识别垫
Zhongguo Kexue Jishu Kexue/Scientia Sinica Technologica Pub Date : 2023-10-01 DOI: 10.1360/sst-2023-0347
Jingyu Ouyang, Ju Ouyang, Jiayu Hu, Xiaojuan Liu, Pan Li, Maiping Yang, Jiaxi Wang, Chong Hou, Qichong Zhang, Guangming Tao
{"title":"基于连续化制备的核壳结构压感纤维阵列式精准轮廓识别垫","authors":"Jingyu Ouyang, Ju Ouyang, Jiayu Hu, Xiaojuan Liu, Pan Li, Maiping Yang, Jiaxi Wang, Chong Hou, Qichong Zhang, Guangming Tao","doi":"10.1360/sst-2023-0347","DOIUrl":"https://doi.org/10.1360/sst-2023-0347","url":null,"abstract":"","PeriodicalId":37925,"journal":{"name":"Zhongguo Kexue Jishu Kexue/Scientia Sinica Technologica","volume":"60 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136248074","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
基于改进神经网络的增材制造刀轨优化研究 基于改进神经网络的增材制造刀轨优化研究
Zhongguo Kexue Jishu Kexue/Scientia Sinica Technologica Pub Date : 2023-10-01 DOI: 10.1360/sst-2023-0249
Hai Dong, Yufeng Guo
{"title":"基于改进神经网络的增材制造刀轨优化研究","authors":"Hai Dong, Yufeng Guo","doi":"10.1360/sst-2023-0249","DOIUrl":"https://doi.org/10.1360/sst-2023-0249","url":null,"abstract":"","PeriodicalId":37925,"journal":{"name":"Zhongguo Kexue Jishu Kexue/Scientia Sinica Technologica","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136205989","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
应对老龄化所致慢病的智能生物材料 应对老龄化所致慢病的智能生物材料
Zhongguo Kexue Jishu Kexue/Scientia Sinica Technologica Pub Date : 2023-09-01 DOI: 10.1360/sst-2023-0311
Yuehui Yuan, Jin Li, Yaming Zhou, Xuefei Zhu, Xiaodong Shao, Lun Fang, Yiyang Liu, Juan Jin, Leyu Wang, Yongsheng Li, Shuilin Wu, Pingqiang Cai, Benhui Hu, Ning Gu
{"title":"应对老龄化所致慢病的智能生物材料","authors":"Yuehui Yuan, Jin Li, Yaming Zhou, Xuefei Zhu, Xiaodong Shao, Lun Fang, Yiyang Liu, Juan Jin, Leyu Wang, Yongsheng Li, Shuilin Wu, Pingqiang Cai, Benhui Hu, Ning Gu","doi":"10.1360/sst-2023-0311","DOIUrl":"https://doi.org/10.1360/sst-2023-0311","url":null,"abstract":"","PeriodicalId":37925,"journal":{"name":"Zhongguo Kexue Jishu Kexue/Scientia Sinica Technologica","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135738157","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
轮轨激励与气动载荷对高速列车转向架结构载荷的分量贡献研究 轮轨激励与气动载荷对高速列车转向架结构载荷的分量贡献研究
Zhongguo Kexue Jishu Kexue/Scientia Sinica Technologica Pub Date : 2023-09-01 DOI: 10.1360/sst-2023-0165
Zheng Yuan, Xianjia Chen, Zhanling Ji, Cen Li, Wei Luo, Qiang Li, Shouguang Sun, Guowei Yang, Yujie Wei
{"title":"轮轨激励与气动载荷对高速列车转向架结构载荷的分量贡献研究","authors":"Zheng Yuan, Xianjia Chen, Zhanling Ji, Cen Li, Wei Luo, Qiang Li, Shouguang Sun, Guowei Yang, Yujie Wei","doi":"10.1360/sst-2023-0165","DOIUrl":"https://doi.org/10.1360/sst-2023-0165","url":null,"abstract":"","PeriodicalId":37925,"journal":{"name":"Zhongguo Kexue Jishu Kexue/Scientia Sinica Technologica","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135738174","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
Micron-scale experimental and numerical study of molten salt solidification process 熔盐凝固过程的微米尺度实验与数值研究
Zhongguo Kexue Jishu Kexue/Scientia Sinica Technologica Pub Date : 2023-09-01 DOI: 10.1360/sst-2022-0437
ZiQian TIAN, ZhiRong LIAO, Chao XU, KaiJun JIANG
{"title":"Micron-scale experimental and numerical study of molten salt solidification process","authors":"ZiQian TIAN, ZhiRong LIAO, Chao XU, KaiJun JIANG","doi":"10.1360/sst-2022-0437","DOIUrl":"https://doi.org/10.1360/sst-2022-0437","url":null,"abstract":"The solid-liquid phase transformation mechanism during solar salt solidification was investigated at the micron-scale via a combination of visualization experiment and numerical simulation with the phase-field method. The solidification process of solar salt particles was divided into three typical stages, with different phase transition patterns and solid-liquid phase boundary morphologies. In addition, the crystallized solar salt featured a typical dendritic morphology, and the initial crystallization site was random and significantly affected dendrite evolution in all directions. When the nucleation site was close to the center, the growths of the main dendrites in the different directions were more consistent, and consequently, the overall morphology featured good symmetry. Through phase-field simulation, the effects of three key phase-field parameters, namely the mode number of anisotropy j , the dimensionless latent heat K , and the strength of anisotropy δ , on the dendrites were explored via the controlled variable method. The model’s vital input parameters were further optimized according to the experimental results. The results showed that the numerical model could accurately simulate the crystal evolution of the actual solar salt particles at K = 2.4, j = 9, and δ = 0.01.","PeriodicalId":37925,"journal":{"name":"Zhongguo Kexue Jishu Kexue/Scientia Sinica Technologica","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135348121","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
“Three-element” cascade control method of a smart fuze 智能引信的“三元”串级控制方法
Zhongguo Kexue Jishu Kexue/Scientia Sinica Technologica Pub Date : 2023-09-01 DOI: 10.1360/sst-2022-0337
He Zhang
{"title":"“Three-element” cascade control method of a smart fuze","authors":"He Zhang","doi":"10.1360/sst-2022-0337","DOIUrl":"https://doi.org/10.1360/sst-2022-0337","url":null,"abstract":"","PeriodicalId":37925,"journal":{"name":"Zhongguo Kexue Jishu Kexue/Scientia Sinica Technologica","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47372538","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
Harmonic closed-loop model predictive fault-tolerant control of a dual three-phase permanent magnet synchronous motor 双三相永磁同步电动机谐波闭环模型预测容错控制
Zhongguo Kexue Jishu Kexue/Scientia Sinica Technologica Pub Date : 2023-09-01 DOI: 10.1360/sst-2022-0319
Jia CUI, WenXiang ZHAO, Tao TAO, LinSen HUANG, XianQun QIU
{"title":"Harmonic closed-loop model predictive fault-tolerant control of a dual three-phase permanent magnet synchronous motor","authors":"Jia CUI, WenXiang ZHAO, Tao TAO, LinSen HUANG, XianQun QIU","doi":"10.1360/sst-2022-0319","DOIUrl":"https://doi.org/10.1360/sst-2022-0319","url":null,"abstract":"The harmonic plane is coupled with the fundamental plane for the open-circuit-fault dual three-phase permanent magnet synchronous motor (DTP-PMSM). The conventional closed-loop control in the harmonic plane caused controller conflicts owing to this coupling effect, which reduced the fault-tolerant performance of the DTP-PMSM. Thus, this paper proposes a harmonic closed-loop fault-tolerant control strategy of DTP-PMSM without controller conflict for single-phase open-circuit faults. First, a fault-tolerant prediction model is derived using a dimensionality-reduced decoupling matrix to overcome the coupling effect, and then, a set of virtual voltage vector control sets suitable for open-circuit faults is reconstructed. In addition, a harmonic voltage extended-state observer is designed to suppress the harmonic current caused by nonlinear factors. The duty cycle that needs to be compensated is quickly obtained via coordinate transformation and injected into the corrected voltage vector to complete the harmonic closed-loop control. The experimental results demonstrate the feasibility and effectiveness of the proposed method.","PeriodicalId":37925,"journal":{"name":"Zhongguo Kexue Jishu Kexue/Scientia Sinica Technologica","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134916029","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
Power electronics technology supporting efficient energy conversion and high-quality regulation 支持高效能源转换和高质量监管的电力电子技术
Zhongguo Kexue Jishu Kexue/Scientia Sinica Technologica Pub Date : 2023-09-01 DOI: 10.1360/sst-2022-0367
Xiangning He, Wuhua Li, Haoze Luo, Xin Xiang, Heya Yang
{"title":"Power electronics technology supporting efficient energy conversion and high-quality regulation","authors":"Xiangning He, Wuhua Li, Haoze Luo, Xin Xiang, Heya Yang","doi":"10.1360/sst-2022-0367","DOIUrl":"https://doi.org/10.1360/sst-2022-0367","url":null,"abstract":"Innovation and reform are urgently needed in the transformation and regulation of modern energy systems to meet the high demands of energy security and environmental governance and to gradually realize the strategic goals of carbon peaking and carbon neutrality. In recent years","PeriodicalId":37925,"journal":{"name":"Zhongguo Kexue Jishu Kexue/Scientia Sinica Technologica","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48716562","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
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