基于Multisim飞机纵向操纵系统力臂调节性能仿真

Performance Simulation of Aircraft Longitudinal Control System Arm Adjustment Based on Multisim

针对飞机纵向操纵系统力臂自动调节装置调节性能的主要影响因素,开展仿真分析。通过分析力臂调节规律中阶梯型迟滞误差的阶梯大小和回线宽度对力臂调节的准确性及工作可靠性影响机理,研究力臂控制电路中不同匹配电阻对力臂调节性能影响规律。分析结果表明:阶梯误差宽度随差动放大电路的共射极电阻增大而减小,能降低系统调节的准确性,同时力臂电机在总行程内的工作次数减少;回线电压随施密特触发电路调节电阻增大而增大,进而影响力臂调节的准确性;维护过程中必须关注控制电路匹配电阻的变化情况,并根据需要及时进行调整,保证飞机纵向操纵的安全性。

The simulation analysis is carried out for the main factors affecting the adjustment performance of the automatic adjustment device of the aircraft longitudinal control system.By analyzing the influence mechanism of the step size and loop width of the stair-like hysteresis error on the accuracy and reliability of arm regulation,the influence law of different matching resistances in the arm control circuit on the arm regulation performance is studied.The analysis results show that the step error width decreases with the increase of the common emitter resistance of the differential amplifier circuit,which reduces the accuracy of the system regulation,and at the same time,the working times of the force arm motor in the total stroke decreases;the return line voltage increases with the increase of the regulating resistance of the Schmidt trigger circuit,which affects the accuracy of force arm regulation;In the process of maintenance,attention must be paid to the change of the matching resistance of the control circuit,and timely adjustment should be made according to the needs to ensure the safety of aircraft longitudinal control.