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Forward/Reverse Attitude Solution and Specificity Analysis for Independent Pitch Control System of Coaxial Dual-Rotor Compound Helicopter
(듀얼로터 동축 헬리콥터의 독립 피치 조절 해석)
Abstract :
The mechanical configuration of an
independent pitch control system (IPCS) for coaxial dual-rotor compound
helicopter (CDCH) was presented, which is mainly constituted by parallel
mechanism, spatial orientation, lower rotor and upper rotor. The solving path
and model division for the IPCS based on the working principle can be explained
to achieve azimuth attitude precise control of upper and lower propeller for
the CDCH. The completely mathematical model of attitude control system for the
CDCH was obtained by using lumped parameters method and sub-total solution
model which the forward and reverse positional attitude solution were deducted
by the coordinate space transformation and kinematic analysis method. The
co-simulation analysis which based on the MATLAB and Recurdyn software was done
and the numerical comparative results show that the theoretical analysis of the
mathematical model for attitude control system was reasonable and applicable by
means of comparison with semi-physical model in the various boundary conditions
and parameters of parallel mechanism, spatial orientation, lower rotor and
upper rotor, respectively.
