摘要
This paper presents a new method to identify the model of a small-scale helicopter in frequency domain using harmony search (HS) algorithm. The dynamics of the small-scale helicopter are simplified to four single-input/single-output (SISO) linear subsystems near the hover point, and the HS optimisation algorithm is used to identify each subsystem's parameters. Time-domain verification is made to check the validity of the identified models. The verification results show that the identified models are accurate and effective enough to describe the dynamics of the helicopter. The identified models show that the dynamics of the roll, pitch and yaw channels are mainly dominated by the lightly damped second-order modes. Identification and verification results show that the application of HS algorithm in system identification is suitable and useful.
摘要译文
本文提出了一种利用和声搜索（HS）算法识别频域小型直升机模型的新方法。小型直升机的动力学简化为悬停点附近的四个单输入/单输出（SISO）线性子系统，HS优化算法用于识别每个子系统的参数。进行时域验证以检查所识别模型的有效性。验证结果表明，所识别的模型准确有效，足以描述直升机的动力学。所识别的模型表明，滚动，俯仰和偏航通道的动力学主要由轻微阻尼的二阶模式支配。鉴定和验证结果表明，HS算法在系统辨识中的应用是合适和有用的。
Jiali Yang [1];Guanlin Wang [2];Jihong Zhu [3]. Frequency-domain identification of a small-scale unmanned helicopter with harmony search algorithm[J]. International Journal of Computer Applications in Technology, 2014,49(2): 141-149