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时间:2020-03-26
《刚体姿态估计的类Rodrigues参数算法研究.pdf》由会员上传分享,免费在线阅读,更多相关内容在行业资料-天天文库。
1、上海航天第28卷2011年第4期AER0SPACESHANGHAI27文章编号:1006—1630(2011)04—0027—06刚体姿态估计的类Rodrigues参数算法研究杨永,张根宝,宁小磊。,陈连华。(1.陕西科技大学电气与信息工程学院,陕西西安710021;2.第二炮兵工程学院,陕西西安710025)摘要:针对Rodrigues参数描述刚体姿态运动时的缺陷,提出了一种类Rodrigues参数的姿态估计算法,从定义上避免了Rodrigues参数和修正Rodrigues参数在丁c,一丁c,2,一2时的奇异·l生。推导了类Rodrigues参数描述的姿态运动学微分方程,给出了坐标变换的类R
2、odrigues参数描述,讨论了类Rodrigues的性质和运算,证明了类Rodrigues参数描述姿态的唯一性,并导出了类Rodrigues参数与其他常用姿态描述间的转换公式。给出了用于捷联惯导的姿态解算中的类Rodrigues递推解法。在Matlab软件中时基于STK生成的某标准弹道轨迹的仿真结果表明:类Rodrigues参数的姿态估计算法不存在奇异,计算效率优于目前广泛应用的四元数方法,有一定的理论参考价值。关键词:姿态估计;类Rodrigues参数;Rodrigues参数·中图分类号:V249.3文献标志码:ARigidBodyAttitudeEstimationAlgorithmBa
3、sedonSimilarRodriguesParameterYANGYong,ZHANGGen-bao,NINGXiao—lei,CHENLian—hua(1.CollegeofElectricandCommunicationEngineering,ShanxiUniversityofScienceandTechnology,Xi’an710021,Shaanxi,China;2.TheSecondArtilleryEngineeringCollege,Xi’an710025,Shaanxi,China)Abstract:InordertogetridofthelimitationofRodr
4、iguesparameterrepresentsrigidbodyattitude,similarRodriguesparameterswereproposedforattitudedeterminationinthispaper,whichwouldavoidsingularitythatappearedinRodriguesparametersandmodifiedRodriguesparametersat,一7c,2n,一27cindefinition.AsimplederivationofsimilarRodriguesparametersbasedattitudekinematics
5、equationwaspresented.CoordinatetransformationusingsimilarRodriguesparameterswasgiven.ThepropertyandoperationofsimilarRodriguesparameterswerediscussed.TheexclusionofattituderepresentationbasedonsimilarRodriguesparameterswasproved.TherelationshipofsimilarRodriguesparameterswithotherattituderepresentat
6、ion,suchasEulerangle,quaternion,rotationvectoranddirectioncosinematrixwerealsoprovided.ArecursivesolutionofsimilarRodriguesparameterswasgiventOattitudealgorithmtofacilitateitsapplicationinSINS.ThesimulationresultsofsomestandardballistictracerwhichgeneratedfromSTKinMatlabsoftwareshowedthattheattitude
7、estimationalgorithmusingsimilarRodriguesparametercouldavoidtheoccurrenceofsingularityandwasmoreefficientoncalculationsthanwidelyusedquaternionbasedkinematicsequation,whichwasanimportantsignificanceint
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