Journal of Northwestern Polytechnical University June Vol No. 3 王海涛, 蒋经凯, 李成行首先建立了主动控制起落架系统的非线性动力学模型然后根据最优控制理论, 在 Matlab

Size: px

Start display at page:

Download "Journal of Northwestern Polytechnical University June Vol No. 3 王海涛, 蒋经凯, 李成行首先建立了主动控制起落架系统的非线性动力学模型然后根据最优控制理论, 在 Matlab"

谷程
5 years ago
Views:

1 Journal of Northwestern Polytechnical University June Vol No. 3 王海涛, 蒋经凯, 李成行首先建立了主动控制起落架系统的非线性动力学模型然后根据最优控制理论, 在 Matlab 的环境下, 应用人工鱼群算法设计了多目标最优的 PID 控制器最后应用 Simulink 控制系统仿真软件对主被动起落架在地面信号为弹伤跑道信号的条件下进行了性能仿真对仿真结果进行了分析比较, 得出的结论是利用最优控制理论设计的多目标最优的 PID 控制器的主动控制起落架能显著降低飞机的振动冲击载荷, 提高飞机机体和起落架的疲劳寿命, 降低跑道不平度对飞机机体和起落架的冲击载荷和振动响应 ; 同时提高飞机的滑行品质和乘客的舒适性起落架 ; PID 控制 ; 主动控制 ; 最优控制 ; 人工鱼群算法 V226 A PID PID 1 PID m 1 m PID 2 1 y 1 y

2 S = y 1 t f - y 1 t 0 t f m 1 0 ÿ 0 m 1 2 ÿ = m 1 2 m g + - F l 2 F + - F a t l F 0 + L a 1 = - F q F - L y 1 L 2 = y 1 1 L q 0 3 = ÿ 2 F a F l L = 3 n i L i 1 i = 1 F t g L 2. 2 n F a = p 0 A V n n 1 0 V ( V ) = p 0 A( 0 V 0 - Ay ) = p 0 A s 1 - Ay F q t s V F l 0 2 = p l A = 1 2 ρsign y s A3 y 2 s 3 ξ 2 A 2 0 F t = k t y 2 + y g 4 L = 0. 9 m 1 + m 2 g PID p 0 V 0 p V 2002 A 5 7 y s y s = y 1 - y 2 n y s ξ A 0 p l ρ k t 3 F q s = K p y 1 s + K i y g s + - y s 1 s + K d s 0. 02s + 1 y 1 s 6 K p K i K d PID 2 PID S 4 t f minj = S + t 0 3 n i L i dt i = 1 F q t PID PID Simulink 2 2 PID 10 s y 1 = y 2 = PID y y 1 = y 2 = 0 4 F q PID PID 3 PID PID F q ode45 PID 3

3 Simulink Simulink 9 4 Matlab K p = K i 4 = K d = Simulink 15 s

4 % 0 m /s s 4 s 5 PID m m 5. 7% m /s m / s 66. 7% 0 m /s m /s m /s Wang Haitao et al. Modeling and Simulation of Active Control Landing Gear. Journal of System Simulation in Chinese 2 Xing J T Xiong Y P Price W G. Passive-Active Vibration Isolation Systems to Produce Zero or Infinite Dynamic Modulus Theoretical and Conceptual Design Strategies. Journal of Sound and Vibration Li Chengxing. Research on Technology of Active Control Landing Gear. Master Degree Dissertation Xi'an Northwestern Polytechnical University 2012 in Chinese Wang Qing et al. Optimal Control Theory Method and Application. Beijing Higher Education Press in Chinese Li Xiaolei Shao Zhijiang Qian Jixin. An Optimizing Method Based on Autonomous Animals Fish-Swarm Algorithm. Systems Engineering-Theory & Practice in Chinese Li Xiaolei. A New Intelligent Optimization Method Artificial Fish School Algorithm. Ph. D. Thesis Hangzhou Zhejiang U- niversity 2003 in Chinese Wang Chuang. The Analysis and Improvement of Artificial Fish-Swarm Algorithm. Master Degree Dissertation Dalian Dalian Maritime University 2008 in Chinese 8. MATLAB Shi Feng. MATLAB Intelligent Algorithm and 30 Case Analysis Beijing Beihang University Press 2011 in Chinese

5 3 421 Shi Youjin. Intellectual Semiactive Control of Flexible Landing Gear of Airplane. Machinery Design & Manufacture in Chinese Optimization Design of Shock Absorber s Performance of Active-Control Landing Gear Based on Artificial Fish-Swarm Algorithm Wang Haitao Jiang Jingkai Li Chengxing College of Aeronautics Northwestern Polytechnical University Xi'an China Abstract First of all the nonlinear mechanical model of the active-control landing gear system is developed. Then the PID controller of optimization is designed according to the optimal control theory in the environment of Matlab with Artificial Fish-Swarm Algorithm. Last the performance of active and passive control landing gears are simulated under the condition that signal of runway is the signal of the repaired airplane runway after being bombed in the environment of Simulink. Through the analysis and comparison of the simulation results the conclusion is that the optimal PID controller which is designed on the basis of the optimal control theory can reduce the shock load dramatically prolong the fatigue life of the fuselage and landing gear system and improve the taxiing performance and ride comfort simultaneously. Key words algorithms computer simulation design dynamic response landing gear aircraft mathematical models MATLAB nonlinear equations optimal control systems shock absorbers active control Artificial Fish-Swarm Algorithm PID controller

Fig. 1 1 The sketch for forced lead shear damper mm 45 mm 4 mm 200 mm 25 mm 2 mm mm Table 2 The energy dissip

Fig. 1 1 The sketch for forced lead shear damper mm 45 mm 4 mm 200 mm 25 mm 2 mm mm Table 2 The energy dissip * - 1 1 2 3 1. 100124 2. 100124 3. 210018 - ABAQUS - DOI 10. 13204 /j. gyjz201511033 EXPERIMENTAL STUDY AND THEORETICAL MODEL OF A NEW TYPE OF STEEL-LEAD DAMPING Shen Fei 1 Xue Suduo 1 Peng Lingyun 2 Ye

Journal of Northwestern Polytechnical University June Vol No. 3 王海涛, 蒋经凯, 李成行 首先建立了主动控制起落架系统的非线性动力学模型 然后根据最优控制理论, 在 Matlab

Journal of Northwestern Polytechnical University June Vol No. 3 王海涛, 蒋经凯, 李成行首先建立了主动控制起落架系统的非线性动力学模型然后根据最优控制理论, 在 Matlab