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辽河三角洲湿地旅游资源开发与保护

水土保持研究 2007年第5期14卷 76-78页

作者：陈丹红沈阳航空工业学院管理系

辽河三角洲湿地在特殊的地理环境、自然条件和人类活动的共同作用下而形成的独特的湿地生态旅游资源景观。基于辽河三角洲湿地生态系统的脆弱性和敏感性,为了谋求区域经济的持续发展和区域生态环境的良性运行,必须缓解湿地旅游和环境保... 详细信息

辽河三角洲湿地在特殊的地理环境、自然条件和人类活动的共同作用下而形成的独特的湿地生态旅游资源景观。基于辽河三角洲湿地生态系统的脆弱性和敏感性,为了谋求区域经济的持续发展和区域生态环境的良性运行,必须缓解湿地旅游和环境保护之间的矛盾。探讨了湿地保护与旅游开发的辨证统一关系,分析了辽河三角洲湿地旅游开发的优势与不足,提出了辽河三角洲湿地生态旅游和生态保护的有效措施。

关键词：旅游资源开发湿地生态旅游湿地保护辽河三角洲

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Optimal allocation of multi-sensor passive localization

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Science china(Information Sciences) 2010年第12期53卷 2514-2526页

作者： WANG BenCai 1,2,HE You 1,WANG GuoHong 1 & XIU JianJuan 1 1 institute of Information Fusion,Naval aeronautical and Astronautical University,Yantai 264001,china 2 Unit 93286,PLA,shenyang 110141,china institute of Information Fusion Naval Aeronautical and Astronautical University Yantai China Unit 93286 PLA Shenyang China

To improve multi-sensor passive localization precision,the optimal allocation form of multi-sensor bearing-only localization is analyzed from the perspective of the geometric dilution of precision(GDOP) of the least squares(LS) *** paper indicates that whether the target lies inside the closed region formed by the sensors or not,the optimal allocation is when each adjacent cut angle between a sensor pair is identical,and all sensors are located on the border of the circle that has the target(which is also the origin of the coordinate system) as its *** there is no restriction on the adjacent cut angle in the above allocation,the optimal estimate of the LS algorithm in the sense of minimum variance can be *** the LS algorithm achieves the optimal estimate and the sensors present the optimal allocation,the respective consistencies are *** results verify the analysis of the optimal allocation form above,which can be used in multi-sensor passive localization algorithms based on sensor management.

关键词： multi-sensor passive localization optimal allocation geometric dilution of precision cut angle consistency optimal estimate

3D Design and Analysis of Crushing Roller of High-pressure Grinding Roller

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3D Design and Analysis of Crushing Roller of High-pressure G...

第十届国际制造工程与管理会议

作者： GAO Hang, QU Li-gang (1. School of Mechanical engineering and Automation, NortheasternUniversity, shenyang 110004, china 2. department of Mechanical engineering, shenyang institute of aeronautical engineering, shenyang 11003., china)

＜正＞ Crushing roller is one of the main parts of High-pressure Grinding Roller, which is a kind of high efficient ore crushing equipment. A kind of assembled roller, which is more convenient to renovate worn surface by simply replacing segmented surface of the roller, was developed. The structural models of assembled roller’s components were designed with SolidWorks software based on feature modeling, these solid models of the roller were virtually assembled. Through this work, not only was the assemble interference checked out so as to examine validity of the structure design, but also these solid models could be recognized by COSMOS/Works software, through which the finite element analysis can be done. Then the stress and displacement of the main shaft and surface segment in two different working states were analyzed and detected quickly according to the analysis results with COSMOS/Works. In conclusion, the optimum clearance of 1. 0-2. 0 mm between concave-convex studded segments is determined to make the using life of assembled roller longer.

关键词： high-pressure grinding roller 3D design assembled roller finite element analysis

The Modeling Research of Magnetorheological Damper in Advanced Intelligent Prosthesis

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The Modeling Research of Magnetorheological Damper in Advanc...

2009中国控制与决策会议

作者： Fu Li~1,Liu Xianzhuo~2 1.department of Auto-control,shenyang institute of aeronautical engineering,shenyang 110136,china 2.School of Mechanical engineering,shenyang University,shenyang 110044,china

Magnetorheological Damper is a kind of semi-active intelligent driving device that has a broad prospect. This paper carries on the dynamic characteristics test of the Magnetorheological Damper,establishes the amendment Sigmoid Magnetorheological Damper model of Intelligent Prosthesis,and the test results show that the theoretical model has fitted the actual value of the characteristic parameters of the Magnetorheological Damper.

关键词： Magnetorheological Damper modeling Intelligent Prosthesis semi-active control

Application of LMD18245 in Two Phase Hybrid Stepping Motor Driver

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Application of LMD18245 in Two Phase Hybrid Stepping Motor D...

2005国际电机与系统学术会议

作者： Pu Ji Xiuhe Wang Feng Lin Rong Zhang Shiyong Liu department of Electrical engineering Shandong University Jinan 250061 china shenyang institute of aeronautical engineering shenyang 11003. china

＜正＞This paper proposed a PWM control circuit for two-phase hybrid stepping motor based on LMD18245. The circuit uses two pieces of EPROMs and DACs to achieve 1/5 microstepping. Choosing different address of EPROM by selecting the coding switch, it can output different current and number of subdivision. The driver system has quite good characteristic and is quite simple, reliable and versatile.

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Design of State Feedback Controller for Systems with Input Constrains and Actuator Faults

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Design of State Feedback Controller for Systems with Input C...

2009中国控制与决策会议

作者： Wei Guan~1,Zhi-Feng Sun~2 1.School of Automation,shenyang institute of aeronautical engineering,shenyang 110136,china. 2.School of Economy and management,shenyang institute of Chemical Technology,shenyang,110142,china.

This paper presents a method for the controller design of linear systems in the presence of actuator saturation and ***,a simple condition is presented,under which any trajectories starting from an ellipsoidΩ will be attracted to zero for linear systems subject to actuator ***,under this condition,when actuator saturation and actuator faults happen at the same time,the trajectories will remain inside an outer ellipsoidΩ,respectively for different mode *** stability and fault-tolerant ability of the system is measured by the size of these *** on the above mentioned condition,the problem of estimating the largest constraints is shown to be a optimization problem which can easily be adapted for controller *** example is given to illustrate the efficiency of the design method.

关键词： actuator fault LMI input constrains

Stability of Planar Linear Systems with State Constraints

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Stability of Planar Linear Systems with State Constraints

2009中国控制与决策会议

＜正＞In this paper,a linear state-feedback controller design approach is proposed for linear time-invariant（LTI） planar systems with state ***,necessary and sufficient condition for stability of LTI constrained systems is presented by using null clines *** addition,a method of designing stabilizing controller for LTI systems with state constraints is *** examples are given to illustrate the efficiency of the design method.

关键词： state constrains LMI planar systems

A Robust Optimization Model for Multi-objective Operation of Supply Chain Under Uncertain Market

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A Robust Optimization Model for Multi-objective Operation of...

第二十六届中国控制会议

作者： Xu Jiawang 1,Huang Xiaoyuan 2 1.management department,shenyang institute of aeronautical engineering,shenyang 110136,P.R.china2.School of Business Administration,Northeastern University,shenyang 110004,P.R.china

A multi-objective operation model is proposed in this paper to deal with a multi-product,multi-period supply chain consisting of a supplier and a *** this supply chain,the amount of raw materials supply and their prices,ultimate products demand and their prices are *** uncertainties of prices are described by the uncertain intervals;the sup-plies and demands are described as a scenario set with certain *** model is constructed as a multi-objective pro-gramming problem to satisfy several conflict objectives,such as the operating coordination of supply chain,making the maximum profit of all participants as much as possible,and robustness of decision to uncertain *** result of a nu-merical example shows that the model we proposed is robust.

关键词： Supply chain Operation management Robust optimization Uncertainty Multi-objective programming

3D Design and Analysis of Crushing Roller of High-pressure Grinding Roller

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厦门大学学报（自然科学版） 2002年第S1期41卷 158-页

作者： GAO Hang 1, QU Li-gang 2 (1. School of Mechanical engineering and Automation, Northeastern University, shenyang 110004, china 2. department of Mechanical engineering, shenyang institute of aeronautical engineering, shenyang 11003., china)

Crushing roller is one of the main parts of High-p re ssure Grinding Roller, which is a kind of high efficient ore crushing equipment. A kind of assembled roller, which is more convenient to renovate worn surface b y simply replacing segmented surface of the roller, was developed. The structura l models of assembled roller’s components were designed with SolidWorks softwar e based on feature modeling, these solid models of the roller were virtually ass embled. Through this work, not only was the assemble interference checked out so as to examine validity of the structure design, but also these solid models cou ld be recognized by COSMOS/Works software, through which the finite element an alysis can be done. Then the stress and displacement of the main shaft and sur face segment in two different working states were analyzed and detected quickly according to the analysis results with COSMOS/Works. In conclusion, the optimum clearance of 1.0～2.0 mm between concave-convex studded segments is determined to make the using life of assembled roller longer.

关键词： high-pressure grinding roller 3D design assemb led roller finite element analysis

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