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摘要:
飞机牵引过程存在大惯性、高质心和时变摩擦力的特点,严重影响电传动牵引车的平稳性。为提高电传动牵引车运行过程的稳定性,以影响飞机牵引稳定的变量转速和转矩为研究对象,分析所设计策略的控制效果。运用ADAMS和MATLAB/Simulink仿真软件,构建了10 t飞机和牵引车的动力学模型和电机模型,设计基于转速和转矩的二阶非线性自抗扰控制器。分别对比分析了基于自抗扰控制(ADRC)和PID控制的电传动飞机牵引车变速过程中的轮速动态特性,并开展了变速过程的样机控制试验。结果表明:基于二阶非线性自抗扰控制器的飞机牵引系统的变速效果更优,变速过程中的轮速在响应速度、稳定性和抗扰能力等方面均更佳;试验结果与仿真结果吻合,证明了仿真模型和仿真结果的可行性与正确性,为高稳定的电传动飞机牵引车研究奠定基础。
Abstract:Large inertia, a high center of mass, and time-varying friction are aspects of the aircraft towing process that have a significant impact on the stability of the aircraft tug. In order to improve the stability of the electric aircraft tug, the variable speed and torque that affect the stability of aircraft traction are taken as the research objects, and the control effect of the designed strategy is analyzed. Using ADAMS and MATLAB/Simulink simulation software, the aircraft and tug dynamic model and motor model are constructed, and the second-order nonlinear auto disturbance rejection controller based on speed and torque is designed. The dynamic characteristics of the wheel speed of the aircraft tug based on active disturbance rejection control (ADRC) and PID control during the shifting process are compared and analyzed, and the prototype control test of the shifting process is carried out. The results show that the aircraft traction system based on the second-order nonlinear auto-disturbance rejection control algorithm has better gear shifting effects, and the wheel speed during gear shifting is better in terms of response speed, stability and anti-disturbance ability; the test results match the simulation results, and the coincidence proves the feasibility and correctness of the simulation model and simulation results, which lays the foundation for the research of highly stable aircraft tug.
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Key words:
- electric aircraft tug /
- stationarity /
- active disturbance rejection control /
- PID /
- load disturbance
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表 1 电传动无杆飞机牵引车元件约束关系
Table 1. Elemental constraints of electric rodless aircraft tug
构件名称 万向舵轮 抱轮机构 后机轮 驱动轮 车体 旋转副 旋转副 机体 固定 旋转 路面 旋转副 旋转副 旋转副 表 2 飞机和牵引车参数输入数据
Table 2. Input parameters of aircraft and tug
项目 参数 数值 飞机 质量/kg 10000 长×宽×高/(mm×mm×mm) 12270×9480×4800 质心到后轮轴距离/mm 430 质心到前轮距离/mm 4150 质心到地面距离/mm 2 000 两后轮距离/mm 2390 牵引车 质量/kg 2 000 长×宽×高/(mm×mm×mm) 1500×1500×480 质心到后轮轴距离/mm 500 质心到前轮距离/mm 920 质心到地面距离/mm 250 两后轮距离/mm 1470 表 3 电传动无杆飞机牵引车仿真和试验条件
Table 3. Simulation and experimental conditions of electric rodless aircraft tug
项目 时间/s 运行状态 速度/(r·min−1) 电机输入 0~1 匀加速 0~200 1~3 匀速 200 3~4 匀加速 200~650 4~7 匀速 650 表 4 电传动无杆飞机牵引车PID试验参数
Table 4. PID parameters of electric rodless aircraft tug
项目 Kp Ki 仿真值 样机参考值 仿真值 样机参考值 d轴电流环 5.83 5.25~6.41 1053.8 948.42~1159.18 q轴电流环 13.2 11.88~14.52 1053.8 948.42~1159.18 速度环 0.14 0.13~0.15 7 6.30~7.70 表 5 电传动无杆飞机牵引车ADRC试验参数
Table 5. ADRC parameters of electric rodless aircraft tug
项目 ${\beta _{01}}$ ${\beta _{02}}$ ${\beta _1}$ b 仿真值 样机参考值 仿真值 样机参考值 仿真值 样机参考值 仿真值 样机参考值 d/q轴电流环 8500 7650~9350 500000 450000~550000 20 18~22 120 108~132 转速环 850 765~935 50000 45000~55000 5000 4500~5500 0 0 表 6 电传动无杆飞机牵引车试验数据
Table 6. Experimental data analysis of electric rodless aircraft tug
控制 时间段/s ${n_{\max }}$ ${n_{\min }}$ ${n }$ ${S }$/% ADRC控制 1~3 199.8 191 200 4.4 3~7 672 658 665 2.1 PID控制 1~3 213 186 200 13.5 3~7 706 633 665 11.0 -
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