Solving Double integral equations

16 次查看（过去 30 天）
chizom wornu
chizom wornu 2022-10-1
评论： chizom wornu 2022-10-1
Ran in:
I tried implementing this double integral equations. However, am getting error when i implemented with the following equation
u_0 = 1.25663706*1e-6; % permeability of free space
L = 12.4; % Axial distance between rotor back plates
p =8; % Number of pole pairs
R1 = 55; % Inner radii of magnets
R2 = 100; % Outer radii of magnets
Kn = 1;
n=1
n = 1
x=0.05
x = 0.0500
sol1 =integral2(@(R,y)u_0*Kn*((cosh(n*p*L*0.5*.1/R))./(sinh(n*p*L*.1/R))).*cosh(n*p*(L-y)*.1/R).*cos(n*p*(xx(x))*.1/R),R1,R2,0,1)
Error using /
Matrix dimensions must agree.

Error in solution (line 13)
sol1 =integral2(@(R,y)u_0*Kn*((cosh(n*p*L*0.5*.1/R))./(sinh(n*p*L*.1/R))).*cosh(n*p*(L-y)*.1/R).*cos(n*p*(xx(x))*.1/R),R1,R2,0,1)

Error in integral2Calc>integral2t/tensor (line 228)
Z = FUN(X,Y); NFE = NFE + 1;

Error in integral2Calc>integral2t (line 55)
[Qsub,esub] = tensor(thetaL,thetaR,phiB,phiT);

Error in integral2Calc (line 9)
[q,errbnd] = integral2t(fun,xmin,xmax,ymin,ymax,optionstruct);

Error in integral2 (line 105)
Q = integral2Calc(fun,xmin,xmax,yminfun,ymaxfun,opstruct);

请先登录，再回答此问题。

采纳的回答

Torsten
Torsten 2022-10-1
Ran in:
u_0 = 1.25663706*1e-6; % permeability of free space
L = 12.4; % Axial distance between rotor back plates
p =8; % Number of pole pairs
R1 = 55; % Inner radii of magnets
R2 = 100; % Outer radii of magnets
Kn = 1;
n=1
n = 1
x=0.05
x = 0.0500
sol1 =integral2(@(R,y)u_0*Kn*((cosh(n*p*L*0.5./R))./(sinh(n*p*L./R))).*cosh(n*p*(L-y)./R).*cos(n*p*x./R),R1,R2,0,1)
sol1 = 7.7928e-05

更多回答（0 个）

类别

在 Help Center 和 File Exchange 中查找有关 Numerical Integration and Differential Equations 的更多信息

标签

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by