Since the western countries began the srfcs research in the eighties , theory of signal detection is used in fdi , and it was successful in some fdi functions in several types of testing aircraft . china did the srfcs research recently , but lack of the engineering fdi algorithm . because the " model based signal detection algorithm " is sensitive to the matching accuracy of the mathematics model and aircraft has prominent nonlinear aerodynamic factors , it is difficulty to upgrade the ability of fdi based on the classical signal detection theory and data fusion only 国外自八十年代开展自修复研究，一般采用基于常规数据处理的故障检测理论来实现飞控系统故障检测与隔离功能，现已在几种验证机上取得初步成果，而国内的研究尚缺乏实用的工程算法；同时，基于常规数据处理的故障检测精度对被检测对象的数学模型匹配度敏感，且飞机的气动特性在故障情况下又具有较强的非线性特性，因此，单纯依靠常规的信号处理算法难以进一步提高故障检测的精度。
Along with development of tiltrotor vehicle ’ s research some theoretical productions have been appeared in some project ( aerodynamic behavior of rotor , kinetic behavior of rotor , rotor / wing aerodynamic interactions , etc . ) . in order to carry on further research and experimentation of these project , national - defence science and technology helicopter rotor kinetic lab of our school begin to building tiltrotor model bench . base on need of this bench , this paper study / design pitch control system on it 随着对倾转旋翼飞行器的深入研究,倾转旋翼的气动特性、动力学特性、旋翼/机身间的气动干扰等课题方面已有一定的理论成果出现。为了对这些课题进行深入研究和试验验证,我校直升机旋翼动力学国防科技重点实验室着手建造了倾转旋翼模型实验台。
