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天河区岑村机场周边突破理论控高建筑物普查 被引量:4
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作者 朱德才 兰泽英 +1 位作者 刘洋 金兵兵 《测绘工程》 CSCD 2014年第11期38-42,共5页
依照国家一级机场标准,充分利用规划审批数据及已有的ADS40航测成果,内外业相结合,综合采用GIS空间分析、ADS40立体测高技术、野外数字化测高技术以及二、三维可视化技术,全面地对天河区岑村机场净空控制范围(约123 600hm2)内的约18万... 依照国家一级机场标准,充分利用规划审批数据及已有的ADS40航测成果,内外业相结合,综合采用GIS空间分析、ADS40立体测高技术、野外数字化测高技术以及二、三维可视化技术,全面地对天河区岑村机场净空控制范围(约123 600hm2)内的约18万幢建筑物进行高程普查,明确"超高"建筑的数量及空间分布,对于检查机场控高和规划管理工作,指导天河区智慧城控规划编制具有重要意义。 展开更多
关键词 机场净空管理 理论控高 ADS40立体测技术 DEM 普查
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An ATMS data-driven method for signalized arterial coordination 被引量:2
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作者 李鹏飞 过秀成 李岩 《Journal of Southeast University(English Edition)》 EI CAS 2012年第2期229-235,共7页
In order to minimize the delays and stops caused by the early started coordinated green phase of the vehicle- actuated signal systems, a stochastic offsets calculation method based on the new types of advanced traffic... In order to minimize the delays and stops caused by the early started coordinated green phase of the vehicle- actuated signal systems, a stochastic offsets calculation method based on the new types of advanced traffic management system (ATMS) data is proposed. As the mainline green starts randomly in vehicle-actuated signal systems, the random theory is applied to obtain the distribution of the unused green time at side streets based on the green gap-out mechanism. Then, the green start time of the mainline can be selected at the point with maximum probability to minimize the delays or stops caused by the randomly started mainline green. A case study in Maine, USA, whose traffic conditions are similar to those of the middle-size Chinese cities, proves that the proposed method can significantly reduce the travel time and delays. 展开更多
关键词 traffic signal control random theory traffic simulation advanced traffic management system (ATMS) intelligent transportation system
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Trajectory tracking and formation control based on consensus in high-dimensional multi-agent systems 被引量:1
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作者 Su Saijun Nian Xiaohong Pan Huan 《High Technology Letters》 EI CAS 2012年第3期326-332,共7页
This paper discusses consensus problems for high-dimensional networked multi-agent systems with fixed topology. The communication topology of multi-agent systems is represented by a digraph. A new consensus protocol i... This paper discusses consensus problems for high-dimensional networked multi-agent systems with fixed topology. The communication topology of multi-agent systems is represented by a digraph. A new consensus protocol is proposed, and consensus convergence of multigent systems is analyzed based on the Lyapunov stability theory. The consensus problem can be formulated into solving a feasible problem with bilinear matrix inequality (BMI) constrains. Furthermore, the consensus protocol is extended to achieving tracking and formation control. By introducing the formation structure set, each agent can gain its individual desired trajectory. Finally, numerical simulations are provided to show the effectiveness of our strategies. The results show that agents from arbitrary initial states can asymptotically reach a consensus. In addition, agents with high-dimensional can track any target trajectory, and maintain desired formation during movement by selecting appropriate structure set. 展开更多
关键词 consensus protocol multi-agent systems fixed topology trajectory tracking for-mation control
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Robust adaptive cross-coupling position control of biaxial motion system 被引量:14
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作者 CHEN Wei WANG DianDian +1 位作者 GENG Qiang XIA ChangLiang 《Science China(Technological Sciences)》 SCIE EI CAS CSCD 2016年第4期680-688,1-3,共9页
The stability and synchronous performance are usually hard to be improved simultaneously in the biaxial cross-coupling position motion control system.Based on analyzing the characteristics of the cross-coupling contro... The stability and synchronous performance are usually hard to be improved simultaneously in the biaxial cross-coupling position motion control system.Based on analyzing the characteristics of the cross-coupling control system,a robust adaptive cross-coupling control strategy is proposed.To restrict influences of destabilizing factors and improve both of stability and synchronous performance,the strategy forces dual axes to track the same reference model using Narendra adaptive control theory.And then,a robust parameters adaptive law is proposed.The stability analysis of the proposed strategy is conducted by applying Lyapunov stability theory.Related simulations and experiments indicate that the proposed strategy can improve synchronous performance and stability simultaneously. 展开更多
关键词 biaxial motion motor control system position tracking robust adaptive control CROSS-COUPLING synchronous error
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