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极限行驶条件下车辆质心侧偏角观测器设计 被引量:9
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作者 朱绍中 高晓杰 余卓平 《同济大学学报(自然科学版)》 EI CAS CSCD 北大核心 2009年第8期1070-1074,1114,共6页
用非线性车辆模型线性化方法,设计了基于广义卡尔曼滤波器和广义龙贝格观测器的质心侧偏角估计算法.给出考虑了轮胎非线性特性的扩展二自由度车辆模型,用非线性最小二乘法拟合轮胎模型的参数;分析非线性模型的能观性,并通过局部线性化方... 用非线性车辆模型线性化方法,设计了基于广义卡尔曼滤波器和广义龙贝格观测器的质心侧偏角估计算法.给出考虑了轮胎非线性特性的扩展二自由度车辆模型,用非线性最小二乘法拟合轮胎模型的参数;分析非线性模型的能观性,并通过局部线性化方法,将非线性模型在当前状态处线性化,并得到近似的线性模型;设计了广义卡尔曼滤波器和线性化龙贝格观测器,并证明观测器的稳定性;最后,通过典型的操纵稳定性试验,验证算法的有效性.极限行驶工况下采用非线性模型线性化的方法,能获得更高的估计精度. 展开更多
关键词 质心侧偏角估计 局部线性化 广义卡尔曼滤波器 广义龙贝格观测器
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Observer design for matrix second-order linear systems: a parametric approach
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作者 WUYunli DUANGuangren 《吉林大学学报(工学版)》 EI CAS CSCD 北大核心 2004年第3期449-453,共5页
The issue of designing a type of generalized Luenberger observers for matrix second-order linear (MSOL) systems was addressed in the matrix second-order framework. By introducing the concept of stable matrix pair for ... The issue of designing a type of generalized Luenberger observers for matrix second-order linear (MSOL) systems was addressed in the matrix second-order framework. By introducing the concept of stable matrix pair for MSOL systems, sufficient and necessary conditions for the design of the type of generalized Luenberger observers were given under the assumption of controllability and observability of the MSOL system. Based on the proposed conditions and the right coprime factorization of the system, a parametric approach to the design of such type of observers was presented. The proposed approach provides all the degrees of design freedom, which can be further utilized to achieve additional system specifications. A spring-mass system was utilized to show the effect of the proposed method. 展开更多
关键词 generalized luenberger observer MATRIX SECOND-ORDER linear systems DEGREES of design FREEDOM stable MATRIX PAIRS
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