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A NEW SOLUTION MODEL OF nonlinear DYNAMIC least square ADJUSTMENT

Journal of Coal Science & Engineering(China) 2000年第2期6卷 47-51页

作者：陶华学郭金运 Dept.ofGeoscience ShandongUniversityofScienceandTechnologyTal＇an271019 Dept.ofGeoscience ShandongUniversityofScienceandTechnologyTal＇an271019

The nonlinear least square adjustment is a head object studied in technology fields. The paper studies on the non derivative solution to the nonlinear dynamic least square adjustment and puts forward a new algorithm model and its solution model. The method has little calculation load and is simple. This opens up a theoretical method to solve the linear dynamic least square adjustment.

关键词： nonlinear least square dynamic adjustment non derivative analytic method

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Straight line feature based image distortion correction

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Engineering Sciences 2008年第2期6卷 83-86,96页

作者： Zhang Haofeng Zhao Chunxia Lu Jianfeng Tang Zhenmin Yang Jingyu Dept. of Computer Science Nanjing Univ. of Sci. ＆ Tech. Nanjing Jiangsu 210094 China

An image distortion correction method is proposed, which uses the straight line features. Many parallel lines of different direction from different images were extracted, and then were used to optimize the distortion parameters by nonlinear least square. The thought of step by step was added when the optimization method working. 3D world coordination is not need to know, and the method is easy to implement. The experiment result shows its high accuracy.

关键词： distortion correction straight line feature nonlinear least square multi-step optimization

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维普期刊数据库

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System Identification of Bilinear State-space Models by Modified Gradient Search Method

System Identification of Bilinear State-space Models by Modi...

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第二十九届中国控制会议

作者： ZHONG Lusheng 1,2,FAN Xiaoping 1,YANG Hui 2 1.College of Information Science and Engineering,Central South University,Changsha 410083,P.R.China2.College of Electrical and Electronic Engineering,East China Jiaotong University,Nanchang Jiangxi 330013,P.R.China

The problem of estimating parameter of bilinear state-space system is considered in this paper.A gradient based search algorithm is proposed to the optimization of output error cost *** nonuniqueness of the fully parameterized bilinear state-space is considered and the parameter update is restricted to the directions that are perpendicular to the manifold of input-output equivalent *** addition,the convergence rate is also ***,numerical simulation is implemented and the results show the improved performance of the proposed method.

关键词： System Identification Parameter Estimation nonlinear least square Bilinear State-Space Model

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Identification of State-space Models by Modified nonlinear LS Optimization Method

Identification of State-space Models by Modified Nonlinear L...

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2009中国控制与决策会议

作者： ZHONG Lusheng,YANG Hui,LU Rongxiu Sun Baohua Meng Shasha College of Electrical and Electronic Engineering,East China Jiaotong University, Nanchang Jiangxi 330013

The problem of estimating parameter of LTI state-space system is addressed in this paper.A modified nonlinear least square(NNLS) method is proposed to the optimization of output error cost *** nonuniqueness of the fully parameterized state-space is considered and the parameter update is restricted to the directions that change the input-output behavior of the *** studies show the improved performance of the proposed method.

关键词： System Identification Parameter Estimation nonlinear least square State-Space Model

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Identification of Countercurrent Rare Earth Extraction Process based on Local Linear Weighted State-space Models

Identification of Countercurrent Rare Earth Extraction Proce...

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2009中国控制与决策会议

作者： ZHONG Lusheng,YANG Hui,LU Rongxiu Sun Baohua Meng Shasha College of Electrical and Electronic Engineering,East China Jiaotong University, Nanchang Jiangxi 330013

The identification problem of rare earth extraction process,which is based on local linear weighted state-space models,is considered in this *** parameter is determined by the optimization of output error cost *** addition,the nonuniqueness of the fully parameterized state-space is considered and the parameter update is restricted to the direction that change the input-output behavior of the system by orthogonal gradient ***,real industrial experiment of rare earth extraction is implemented and the results show the efficiency of the proposed method.

关键词： System Identification Parameter Estimation Rare Earth nonlinear least square

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