第18卷第1期 2010年1月
1004-924X(2010)01-0100-08
文章编号
光学精密工程
Optics and Precision Engineering
Vol. 18No. 1
Jan.2010
轴对称飞行器滚转稳定控制与舵机技术指标
张跃，段镇
（中国科学院长春光学精窑机械与物理研究所，吉林长春130033）
摘要：结合捷联惯性导航技术，系统研究了能机技术指标对滚转自动驾驶仪性能的影响。根据滚转回路特性，分析了滚转回路截止频率与能机带宽的基本关系。应用频域分析，在低阶简化模型和高阶模型性能比较的基础上，研究了能机带宽和相角对滚转回路性能的影响。以二阶系统阶跃响应形式，联系飞行操纵产生的下洗流干扰力矩与滚转稳态指令，确定了能的最大偏转角速度，保证滚转自动驾驶仪在机动飞行时工作在线性区。另外，综合考虑有转速和角度限制的二阶系统能机模型及不同总攻角下的最大干扰力矩，考查了饱和非线性区中滚转回路指令和滚转角的响应状态，论证了滚转回路的稳定性。结果表明，对于弹体滚转时间常数为0.3s，能效率力矩为42N·m/rad，带宽要求>50rad/s的滚转自动驾驶仪，能机带宽应不小于20Hz，阻尼比应在0.6以上。
关键词：轴对称飞行器；滚转自动驾驶仅能机；稳定性；饱和非线性
中图分类号：V241.5
文献标识码：A
Roll stable control and rudder's technologic
parametersofaxisymmetricaircrafts
ZHANG Yue, DUAN Zhen
(ChangchunInstituteofOptics，FineMechanicsandPhysics， ChineseAcademyofSciences，Changchun130033，China)
Abstract: Combined with a strapdown inertial navigation technology, the effect of the technical param eters of a rudder on the performance of a roll autopilot was studied systematically. According to the roll-loop characteristics, the relationship between the roll-loop cut-off frequency and the rudder band-width was analyzed; and by comparing the simplified low-order model with the high-order model, the effect of the rudder bandwidth and phase angle on the roll-loop performance was studied based on a frequency domain analysis. In the step response form of a second-order system, the maximum angular velocity of the rudder was determined in combination with the downwash torque with the rolling steady-state command, which ensures the roll autopilot to operate on a linear area under the condition of maneuvering flight. Furthermore, considering the second-order system rudder model with the re-strictions on angular velocity and angles and the maximum disturbing torque under different total at tack angles, the roll-loop commands and the response state of roll in a saturated nonlinear area was ex amined,and the stability of roll-loop was proved. Experimental results show that the rudder band-
收稿日期：2009-07-08；修订日期：2009-09-18. 基金项目：中国科学院三期创新工程资助项目