现代电子技术
現代電子技術
현대전자기술
MODERN ELECTRONICS TECHNIQUE
2013年
21期
113-116
,共4页
直升机%外挂部件%前馈控制%傅里叶变换
直升機%外掛部件%前饋控製%傅裏葉變換
직승궤%외괘부건%전궤공제%부리협변환
helicopter%externally-hung component%feed-forward control%Fourier transform
直升机是一种比较复杂的飞行器,基于工程需求,直升机机体腹部安装了一个可以打开和收起的外挂部件,该外挂部件的转动会给直升机带来周期性的力和力矩扰动。针对输入扰动响应的特点,提出了抑制扰动的前馈控制方案。详细介绍了前馈控制律的设计思想和基于傅里叶变换的控制信号的提取方法,得到了最终的设计结果并进行了相应的仿真验证。Simulink仿真结果表明,所采用的前馈控制方案能够较好地抑制干扰造成的姿态角波动,证明所提出的控制方案可行且有效,证明了该控制律对外挂部件在任意转速下都能达到较为满意的抗干扰的效果。
直升機是一種比較複雜的飛行器,基于工程需求,直升機機體腹部安裝瞭一箇可以打開和收起的外掛部件,該外掛部件的轉動會給直升機帶來週期性的力和力矩擾動。針對輸入擾動響應的特點,提齣瞭抑製擾動的前饋控製方案。詳細介紹瞭前饋控製律的設計思想和基于傅裏葉變換的控製信號的提取方法,得到瞭最終的設計結果併進行瞭相應的倣真驗證。Simulink倣真結果錶明,所採用的前饋控製方案能夠較好地抑製榦擾造成的姿態角波動,證明所提齣的控製方案可行且有效,證明瞭該控製律對外掛部件在任意轉速下都能達到較為滿意的抗榦擾的效果。
직승궤시일충비교복잡적비행기,기우공정수구,직승궤궤체복부안장료일개가이타개화수기적외괘부건,해외괘부건적전동회급직승궤대래주기성적력화력구우동。침대수입우동향응적특점,제출료억제우동적전궤공제방안。상세개소료전궤공제률적설계사상화기우부리협변환적공제신호적제취방법,득도료최종적설계결과병진행료상응적방진험증。Simulink방진결과표명,소채용적전궤공제방안능구교호지억제간우조성적자태각파동,증명소제출적공제방안가행차유효,증명료해공제률대외괘부건재임의전속하도능체도교위만의적항간우적효과。
Helicopter is a very complicated air vehicle. Based on project requirements,an externally-hung component is in-stalled under the belly of helicopter airframe,of cause,it can be pushed out and pulled in,but its movement imposes a periodic force and moment on the helicopter. Then,a feed-forward control scheme is proposed according to the characteristics of the in-put disturbance responses. The design concept of the feed-forward control law and method of control signal extraction based on Fourier transform are explicated in detail in this thesis. The digital simulation was performed to confirm its control effects. Simu-link simulation results indicate that the feed-forward control scheme can restrain the attitude angle fluctuations caused by the in-terference,and the proposed control scheme is feasible and effective. Moreover,the designed control law can achieve a satisfac-tory anti-jamming effect at any rotation speed.