摘要
高速电磁阀是航空发动机实现电子控制部件,工程应用中通常采用定频与变频两种驱动方式,而应对控制效果方面进行对比研究。为比较两种方式对系统控制的影响,为相关控制模式选型提供参考,在AMESim环境下建立了电磁阀及典型航空发动机机械液压主燃油流量控制系统的数学模型,运用数字仿真方法,研究了定频变占空比及变频变占空比两种驱动控制模式对系统性能的影响,以及定频控制模式下不同频率对系统性能的影响。结果表明:变频控制方式在快速性方面优于定频控制,其它性能相当。定频控制模式下,驱动频率增加,系统响应的超调量减小但响应速度变慢;驱动频率降低,系统的响应速度变快但超调量增大。
High speed solenoid is a key component of aero-engine electric control system. Two control methods applied in engineering are the variable frequency method and the steady frequency method. However, it is not easy to find the research on the comparison of these two methods both at home and abroad. To better understand the different effects these two methods have on the control of the system and offer some help on the choice of the control method in engineering, the model of high speed solenoid and typical mechanical-hydraulic control system was built with AMES- im. Based on this model, two comparisons have been made. One of them was between the settled frequency duty ratio （SFDR） control algorithm and the variable frequency duty ratio （VFDR） control algorithm. The other one was done according to the different frequency in the settled frequency control. The simulation shows that the VFDR has better quality than the SFDR in the response time, and they are nearly equal in other aspects. As the frequency grows, the response time slows down while the overshoot of the system decreases. As the frequency decreases, the result is completely opposite.
出处
《计算机仿真》
CSCD
北大核心
2013年第1期145-149,共5页
Computer Simulation
