fuzzy logic controller

I am a Master of engineering student and i am doing project on" sensorless speed control of BLDC motor using fuzzy logic controller".I design fuzzy logic controller, but while running there is an error ("fis cannot evaluate").how to overcome this? can anybody help me to send your simulation file for my reference?...... thank you

[SHUBHAM SINGH]

just double click on fuzzy controller in model file and 'controller-name.fis' where controller is the name of the controller by which you save your controller and just remember one thing that the fuzzy controller is in the same folder in which your model file is present.

[K RAJAMOHANA]

Now, i'm working in 3-phase bldc motor.. i have choosen the motor rating of 24V, 60W, 1500 RPM for my harware implementation. But, i met one problem in parameter setting in simulink block like stator rsistance, inductance, inertia, viscous damping, static friction, flux linkage established by magnets, torque constrant, voltage constant likewise..kindly give any suggestion for my case...

Answer 1

[Manikandan]

first you need to import and export the fis file, i know the fuzzy working but i need sensorless control of BLDC motor drive. if you ready i give fis files if you give sensorless BLDC drive .mdl maen. i wait your reply.

Reg, R.manikanan, ME.,(Ph.D) AP/EEE The Kavery Engineering College Salem dt. Tamil Nadu. India Cell:9944270473 Email: [e-mail]

Answer 2

[Asegid Tefera]

% Line and bus data

LD = [1 1 2 0.0678 0.2345;

2 1 3 0.094 0.1752;

3 1 4 0.092 0.1750;

4 2 5 0.90 0.1748;

5 2 6 0.92 0.1752;

6 2 7 0.04356 0.3467;

7 2 8 0.098 0.15;

8 3 9 0.096 0.14;

9 3 10 0.098 0.15;

10 3 11 0.00483 0.08987;

11 4 12 0.98 0.15];

% Bus data

BD = [1 0 0;

2 1.840 0.460;

3 0.980 0.340;

4 1.790 0.446;

5 1.598 1.840;

6 1.610 0.600;

7 0.780 0.110;

8 1.150 0.060;

9 0.980 0.130;

10 1.640 0.200;

11 0.980 0.130;

12 0.980 0.130];

% Number of buses

num_buses = size(BD, 1);

% Compute power injections at each bus

P_injection = zeros(num_buses, 1);

for i = 1:size(BD, 1)

P_injection(i) = BD(i, 2);

end

% Compute power flow in each line

P_flow = zeros(size(LD, 1), 1);

for i = 1:size(LD, 1)

from_bus = LD(i, 2);

to_bus = LD(i, 3);

reactance = LD(i, 5);

voltage_diff = abs(BD(from_bus, 2) - BD(to_bus, 2));

P_flow(i) = voltage_diff / reactance;

end

% Calculate voltage stability index

VSI = max(P_flow) / max(P_injection);

disp(['Voltage Stability Index: ', num2str(VSI)]);