摘要
分析了防滑刹车控制系统的性能与控制原理的关系 ,以及低摩擦系数跑道上系统性能恶化的原因。提出了本系统的稳定性概念 ,以及用估值和顺馈补偿不可直接量测强干扰—地面结合力矩的方法。找到了刹车效率与控制精度间的关系 ,对防滑刹车控制系统的设计具有现实意义。
The relationship between performance and control principle of common aircraft antilock brake systems is investigated. The analysis of track test data and flight test data reveals that the system performance can be improved with the accurate estimation of ground reaction torque. Our main contributions are as follows: (1) We proposed a method for estimating ground reaction torque from brake pressure and wheel velocity. The estimation is used as a feedforward (as shown in Fig.1) to improve the system performance. (2) We for the first time studied the relationship between brake efficiency and the accuracy of the controller, and got inequality (4), where Δ V is the accuracy of the controller, η μ is the brake efficiency. With this inequality, the requirement for brake efficiency can be changed into the requirement for the accuracy of the controller.
出处
《西北工业大学学报》
EI
CAS
CSCD
北大核心
2000年第3期469-473,共5页
Journal of Northwestern Polytechnical University
基金
国家重点基础研究发展规划项目!(G19980 30 417)
