global I1 I2 P SynM s G D L Polar k; I1=200; % Moment of intertia of motor (kgm^2)
I2=3000; % Moment of intertia of fan (kgm^2)
P=1000000; % Motor Power
SynM=1500; % Motor synchronous speed RPM
s=0.05; % Motor slip
G=80000000000; % Shaft modulus of Rigidity
D=0.2; % Shaft Diameter
L=1; % Shaft Length
Polar=0.0001571; % (pi*(D^4)/32) – Polar moment of Inertia
k=12568000; % stiffness = (G*J)/L
t0=0; % start time of simulation
tf=60; % end time of simulation
Tf1=P/((2*pi/60)*((1-s)*SynM)); % Torque with full load
M=[0; 20; 40; 60; 65; 70; 75; 80; 85; 90; 95; 100];% percentage of motor synchronous speed
T=[150; 176; 212; 268; 282; 289; 296; 290; 262; 200; 100; 0]; % percentage of torque with full load
Tm=Tf1.*(T./100); % Torque motor in N.m
Tf=(0.0033).*(((SynM*(2*pi/60)).*(M./100)).^2); % Torque fan in N.m
P1=polyfit(((SynM*(2*pi/60)).*(M./100)),Tm,6); % Coefficient %Pm=polyval(P,Sm); % value of y axis
P2=polyfit(((SynM*(2*pi/60)).*(M./100)),Tf,4); % Pf=polyval(P2,Sm);
x=[0; 0; 0; 0]; % initial value for z_dot in assignment_function
options=odeset('abstol',1e-6,'reltol',1e-6); % set value to -6 maximum
[t,z]=ode45('assignment_function',[t0 tf],x,options); % used ode45 function
plot(t,z); % plot graph
subplot(2,1,1);plot(t,z(:,2),'r',t,z(:,4),'g');grid;title('Angular Velocity against Time');xlabel('Time (s)');ylabel('Angular Velocity (rad/s)');legend('Motor','Fan'); subplot(2,1,2);plot(t,z(:,1)-z(:,3));grid;title('Angle of Twist against Time');xlabel('Time (s)');ylabel('Angle of Twist (Rad)');legend('Angle of twist');Error using polyfit
Too many input arguments.
Error in Testrun (line 30)
P2=polyfit(((SynM*(2*pi/60)).*(M./100)),Tf,4);
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