,Nonlinear path-following method for fixed-wing unmanned aerial vehicles

来源 :Journal of Zhejiang University-Science C(Computers & Electro | 被引量 : 0次 | 上传用户:lilei1984lilei
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
A path-following method for fixed-wing unmanned aerial vehicles(UAVs) is presented in this paper.This method consists of an outer guidance loop and an inner control loop.The guidance law relies on the idea of tracking a virtual target.The motion of the virtual target is explicitly specified.The main advantage of this guidance law is that it considers the maneuvering ability of the aircraft.The aircraft can asymptotically approach the defined path with smooth movements.Meanwhile,the aircraft can anticipate the upcoming transition of the flight path.Moreover,the inner adaptive flight control loop based on attractive manifolds can follow the command generated by the outer guidance loop.This adaptive control law introduces a first-order filter to avoid solving the partial differential equation in the immersion and invariance adaptive control.The performance of the proposed path-following method is validated by the numerical simulation. A path-following method for fixed-wing unmanned aerial vehicles (UAVs) is presented in this paper. This method consists of an Outer guidance loop and an inner control loop. The guidance law relies on the idea of ​​tracking a virtual target. Motion of the virtual target is explicitly specified. The main advantage of this guidance law is that it considers the maneuvering ability of the aircraft. Aircraft can asymptotically approach the defined path with smooth movements. Meanwhile, the aircraft can anticipate the upcoming transition of the flight path.Moreover, the inner adaptive flight control loop based on attractive manifolds can follow the command generated by the outer guidance loop. This adaptive control law introduces a first-order filter to avoid solving the partial differential equation in the immersion and invariance adaptive control. The performance of the proposed path-following method is validated by the numerical simulation.
其他文献
该文在对田间14个小麦品种系统研究的基础上,通过室内温光模拟试验,研究了8个国内外品种苗穗期、穗分化、主茎叶数和产量性状等的温光反应,并采用回归分析等方法分析了其温光
目的研究CYP19基因rs10046位点单核苷酸多态性(single nucleotide polymorphism,SNP)与新疆维吾尔族乳腺癌易感性及临床病理特征的关系。方法采用病例对照研究,应用聚合酶链
法律责任的归结问题是当前频繁发生的学校体育伤害事故纠纷及诉讼的争议焦点。作为解决学校体育伤害事故归责问题的核心和关键,归责原则的确定和适用一直存在法学争论和观点
为全面评价南极帽贝的营养价值,对南极帽贝和斗嫁娥的主要营养成分进行了分析比较.结果表明:南极帽贝的蛋白质含量为66.88%,脂肪含量为13.44%,均比斗嫁(虫戚)略高;钙、镁2种元
A novel representation of a triangular mesh surface using a set of scale-invariant measures is proposed. The measures consist of angles of the triangles (triang
学位
以66个贵州水稻地方品种为材料,进行自然日照和人工短日(不同播期)处理的结果:水稻品种感光性弱—中、感温性弱、中强均有,短日高温生育期长。由于贵州低纬度高海拔的地理因
One of the important characteristics of pulsar radiation is polarization.It is considered not only as a probe for recognizing the structure of a magnetic field,
该研究对罗布麻DNA导入鲁棉6号后获得的棉花抗盐变异体,进行了RAPD分析、抗盐生理及遗传研究,其结果如下:1.用140个引物对供体罗布麻、受体鲁棉6、变异体山农011进行RAPD分析