Modeling method of dual-redundancy EHA driven paddle fan engine variable pitch system

The invention discloses a modeling method for a dual-redundancy EHA driving paddle fan engine variable pitch system. The modeling method comprises the following steps that S1, a dual-redundancy EHA driving framework is established; s2, according to the dual-redundancy EHA driving architecture, constructing a dynamic model comprising a motor system and a hydraulic actuation system; s3, building a propeller fan engine core engine mathematical model based on a propeller power model of an eddy current theory; s4, solving and establishing a fan engine simulation model through an iteration or fitting numerical method; and S5, establishing a coupling transmission mathematical model of each component in the variable-pitch control system of the paddle fan engine. According to the method, the defects in the prior art can be overcome, and the accurate dual-redundancy EHA driving paddle fan engine pitch angle control model with greatly reduced complexity is provided. 本发明公开了一种双余度EHA驱动桨扇发动机变距系统的建模方法，包括以下步骤：S1，建立双余度EHA驱动架构；