The real-time capability of integrated flight/propulsion optimal control （IFPOC） is studied. An appli- cation is proposed for IFPOC by combining the onboard hybrid aero-engine model with sequential quadratic pro- gr...The real-time capability of integrated flight/propulsion optimal control （IFPOC） is studied. An appli- cation is proposed for IFPOC by combining the onboard hybrid aero-engine model with sequential quadratic pro- gramming （SQP）. Firstly, a steady-state hybrid aero-engine model is designed in the whole flight envelope with a dramatic enhancement of real-time capability. Secondly, the aero-engine performance seeking control including the maximum thrust mode and the minimum fuel-consumption mode is performed by SQP. Finally, digital simu- lations for cruise and accelerating flight are carried out. Results show that the proposed method improves real- time capability considerably with satisfactory effectiveness of optimization.展开更多
The purpose of this paper is the design of neural network-based adaptive sliding mode controller for uncertain unknown nonlinear systems. A special architecture adaptive neural network, with hyperbolic tangent activat...The purpose of this paper is the design of neural network-based adaptive sliding mode controller for uncertain unknown nonlinear systems. A special architecture adaptive neural network, with hyperbolic tangent activation functions, is used to emulate the equivalent and switching control terms of the classic sliding mode control （SMC）. Lyapunov stability theory is used to guarantee a uniform ultimate boundedness property for the tracking error, as well as of all other signals in the closed loop. In addition to keeping the stability and robustness properties of the SMC, the neural network-based adaptive sliding mode controller exhibits perfect rejection of faults arising during the system operating. Simulation studies are used to illustrate and clarify the theoretical results.展开更多
Power efficiency and link reliability are of great impor- tance in hierarchical wireless sensor networks （HWSNs）, espe- cially at the key level, which consists of sensor nodes located only one hop away from the sink...Power efficiency and link reliability are of great impor- tance in hierarchical wireless sensor networks （HWSNs）, espe- cially at the key level, which consists of sensor nodes located only one hop away from the sink node called OHS. The power and admission control problem in HWSNs is comsidered to improve its power efficiency and link reliability. This problem is modeled as a non-cooperative game in which the active OHSs are con- sidered as players. By applying a double-pricing scheme in the definition of OHSs＇ utility function, a Nash Equilibrium solution with network properties is derived. Besides, a distributed algorithm is also proposed to show the dynamic processes to achieve Nash Equilibrium. Finally, the simulation results demonstrate the effec- tiveness of the proposed algorithm.展开更多
目的探讨疾病诊断相关分组(diagnosis related groups,DRG)背景下住院信息质量控制对病案质量的影响。方法选取2023年3—8月太仓市第一人民医院实施DRG后病案统计室的5155份病案为研究对象,依据病案首页资料管理方式不同分为对照组和研...目的探讨疾病诊断相关分组(diagnosis related groups,DRG)背景下住院信息质量控制对病案质量的影响。方法选取2023年3—8月太仓市第一人民医院实施DRG后病案统计室的5155份病案为研究对象,依据病案首页资料管理方式不同分为对照组和研究组。研究组2585份病案,基于零缺陷管理理念,以住院信息质量控制管理模式进行病案首页资料管理。对照组2570份病案,以住院信息常规管理模式进行病案首页资料管理。统计两组病案首页资料缺项情况与诊断和手术操作的填写情况,评价病案首页资料质量。结果住院信息质量控制管理后,病案管理人员理论与技能考核成绩均高于管理前,差异有统计学意义(P<0.05)。研究组病案首页患者基本信息、住院过程信息、诊疗信息与费用信息的缺项率均低于对照组,差异有统计学意义(P<0.05)。研究组病案首页主要与其他诊断及诊断编码的准确率均高于对照组,差异有统计学意义(P<0.05)。研究组手术患者病案首页主要手术操作与其他手术操作及手术操作编码的准确率均高于对照组,差异有统计学意义(P<0.05)。结论住院信息质量控制的应用可以提高病案首页资料的准确性与完整性,提升病案质量,对更好地实施DRG、提高医疗服务质量具有积极作用。展开更多
针对多品种小批量机加工车间关键工序因质量数据实时采集困难且样本数据量不足,导致质量统计过程实时控制困难和难于实现质量状态预警等问题,提出了一种集生产现场质量数据实时采集、小样本数据转化处理、质量状态在线控制及预警为一体...针对多品种小批量机加工车间关键工序因质量数据实时采集困难且样本数据量不足,导致质量统计过程实时控制困难和难于实现质量状态预警等问题,提出了一种集生产现场质量数据实时采集、小样本数据转化处理、质量状态在线控制及预警为一体的多品种小批量关键工序动态SPC(statistical process control)三层技术实现框架,并对其中基于多功能信息交互终端的车间现场质量数据实时采集、多图联合的小样本数据SPC质量控制、基于BP(back propagation)神经网络的质量状态预警等实现方法和技术进行了研究。最后,将该方法在一多品种小批量机加工车间进行了应用,取得了良好的效果。展开更多
基金Supported by the Aeronautical Science Foundation of China(2010ZB52011)the Funding of Jiangsu Innovation Program for Graduate Education(CXLX11-0213)the Nanjing University of Aeronautics and Astronautics Research Funding(NS2010055)~~
文摘The real-time capability of integrated flight/propulsion optimal control （IFPOC） is studied. An appli- cation is proposed for IFPOC by combining the onboard hybrid aero-engine model with sequential quadratic pro- gramming （SQP）. Firstly, a steady-state hybrid aero-engine model is designed in the whole flight envelope with a dramatic enhancement of real-time capability. Secondly, the aero-engine performance seeking control including the maximum thrust mode and the minimum fuel-consumption mode is performed by SQP. Finally, digital simu- lations for cruise and accelerating flight are carried out. Results show that the proposed method improves real- time capability considerably with satisfactory effectiveness of optimization.
文摘The purpose of this paper is the design of neural network-based adaptive sliding mode controller for uncertain unknown nonlinear systems. A special architecture adaptive neural network, with hyperbolic tangent activation functions, is used to emulate the equivalent and switching control terms of the classic sliding mode control （SMC）. Lyapunov stability theory is used to guarantee a uniform ultimate boundedness property for the tracking error, as well as of all other signals in the closed loop. In addition to keeping the stability and robustness properties of the SMC, the neural network-based adaptive sliding mode controller exhibits perfect rejection of faults arising during the system operating. Simulation studies are used to illustrate and clarify the theoretical results.
基金supported by the National Natural Science Foundation of China (7070102571071105)+2 种基金the Program for New Century Excellent Talents in Universities of China (NCET-08-0396)the National Science Fund for Distinguished Young Scholars of China (70925005)the Program for Changjiang Scholars and Innovative Research Team in University (IRT/028)
文摘Power efficiency and link reliability are of great impor- tance in hierarchical wireless sensor networks （HWSNs）, espe- cially at the key level, which consists of sensor nodes located only one hop away from the sink node called OHS. The power and admission control problem in HWSNs is comsidered to improve its power efficiency and link reliability. This problem is modeled as a non-cooperative game in which the active OHSs are con- sidered as players. By applying a double-pricing scheme in the definition of OHSs＇ utility function, a Nash Equilibrium solution with network properties is derived. Besides, a distributed algorithm is also proposed to show the dynamic processes to achieve Nash Equilibrium. Finally, the simulation results demonstrate the effec- tiveness of the proposed algorithm.
文摘目的探讨疾病诊断相关分组(diagnosis related groups,DRG)背景下住院信息质量控制对病案质量的影响。方法选取2023年3—8月太仓市第一人民医院实施DRG后病案统计室的5155份病案为研究对象,依据病案首页资料管理方式不同分为对照组和研究组。研究组2585份病案,基于零缺陷管理理念,以住院信息质量控制管理模式进行病案首页资料管理。对照组2570份病案,以住院信息常规管理模式进行病案首页资料管理。统计两组病案首页资料缺项情况与诊断和手术操作的填写情况,评价病案首页资料质量。结果住院信息质量控制管理后,病案管理人员理论与技能考核成绩均高于管理前,差异有统计学意义(P<0.05)。研究组病案首页患者基本信息、住院过程信息、诊疗信息与费用信息的缺项率均低于对照组,差异有统计学意义(P<0.05)。研究组病案首页主要与其他诊断及诊断编码的准确率均高于对照组,差异有统计学意义(P<0.05)。研究组手术患者病案首页主要手术操作与其他手术操作及手术操作编码的准确率均高于对照组,差异有统计学意义(P<0.05)。结论住院信息质量控制的应用可以提高病案首页资料的准确性与完整性,提升病案质量,对更好地实施DRG、提高医疗服务质量具有积极作用。
文摘针对多品种小批量机加工车间关键工序因质量数据实时采集困难且样本数据量不足,导致质量统计过程实时控制困难和难于实现质量状态预警等问题,提出了一种集生产现场质量数据实时采集、小样本数据转化处理、质量状态在线控制及预警为一体的多品种小批量关键工序动态SPC(statistical process control)三层技术实现框架,并对其中基于多功能信息交互终端的车间现场质量数据实时采集、多图联合的小样本数据SPC质量控制、基于BP(back propagation)神经网络的质量状态预警等实现方法和技术进行了研究。最后,将该方法在一多品种小批量机加工车间进行了应用,取得了良好的效果。
