www.gusucode.com > Wind Turbine Model工具箱matlab源码 > Wind Turbine Model/Wind_Turbine_Model_R18b/Scripts/Cylinder_Inertia.m
function [Inertia] = Cylinder_Inertia(length, radius,density,sym_axis) % Example function for calculating cylinder inertia % Copyright 2009-2018 The MathWorks(TM), Inc. mass = density*pi*radius^2*length; inertia_about_sym_axis = mass*(radius^2)/2; inertia_perp_sym_axis = mass*((length^2)/12+(radius^2)/4); Inertia_xx = inertia_perp_sym_axis; Inertia_yy = inertia_perp_sym_axis; Inertia_zz = inertia_perp_sym_axis; if (lower(sym_axis)=='x') Inertia_xx = inertia_about_sym_axis; elseif (lower(sym_axis)=='y') Inertia_yy = inertia_about_sym_axis; elseif(lower(sym_axis)=='z') Inertia_zz = inertia_about_sym_axis; end Inertia=[Inertia_xx 0 0;0 Inertia_yy 0;0 0 Inertia_zz];