pid_controller.m

This software is developed to provide ease with controller design. For PID control, options are give

    b_dou = str2num(b);
    
    c= get(handles.C_edit,'String');
    c_dou = str2num(c);
    
    d= get(handles.D_edit,'String');
    d_dou = str2num(d);
    
    %================= Error If Either A,B,C or D is empty ================
    
    if isempty(a_dou) || isempty(b_dou) || isempty(c_dou) || isempty(d_dou)
        errordlg('Please enter all A,B,C and D');
    end
    
    sys_ss = ss(a_dou,b_dou,c_dou,d_dou);
    figure
    bode(sys_ss),title('Bode Diagram Without Controller'),grid on
end
%=====================================================================
% --------------------------------------------------------------------
function NPWC_Callback(hObject, eventdata, handles)
% hObject    handle to NPWC (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)

%====================== Values from Radio Button ======================
tf_pushbutton = get (handles.tf_radiob,'Value');
ss_pushbutton = get(handles.ss_radiob,'Value');

%================= Error If both were not Selected ===================
if ss_pushbutton == get(handles.ss_radiob,'Min') && tf_pushbutton == get(handles.tf_radiob,'Min')
    errordlg('First Enter either "State Space" or "Transfer Function"');
end

%================= Implementing Transfer Function ====================
if tf_pushbutton == get(handles.tf_radiob,'Max') && ss_pushbutton == get(handles.ss_radiob,'Min')
    num= get (handles.num_edit,'string');
    num_dou = str2num(num);
    
    den= get (handles.den_edit,'string');
    den_dou = str2num(den);
    
    %================= Error If Either Num or Den is empty ==============
    if isempty(num_dou) || isempty(den_dou)
        errordlg('Please Enter "Transfer Function"');
    end
    
    sys_tf = tf(num_dou,den_dou);
    figure
    nyquist(sys_tf),title('Nyquist Plot Without Controller'),grid on
end

%================= Implementing State Space Model ====================

if ss_pushbutton == get(handles.ss_radiob,'Max') && tf_pushbutton == get(handles.tf_radiob,'Min')
       
    a= get(handles.A_edit,'String');
    a_dou = str2num(a);
    
    b= get(handles.B_edit,'String');
    b_dou = str2num(b);
    
    c= get(handles.C_edit,'String');
    c_dou = str2num(c);
    
    d= get(handles.D_edit,'String');
    d_dou = str2num(d);
    
    %================= Error If Either A,B,C or D is empty ==============
    
    if isempty(a_dou) || isempty(b_dou) || isempty(c_dou) || isempty(d_dou)
        errordlg('Please enter all A,B,C and D');
    end
    
    sys_ss = ss(a_dou,b_dou,c_dou,d_dou);
    figure
    nyquist(sys_ss),title('Nyquist Plot Without Controller'),grid on
end
%=====================================================================

% --------------------------------------------------------------------
function NCWC_Callback(hObject, eventdata, handles)
% hObject    handle to NCWC (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)

%====================== Values from Radio Button ======================
tf_pushbutton = get (handles.tf_radiob,'Value');
ss_pushbutton = get(handles.ss_radiob,'Value');

%================= Error If both were not Selected ===================
if ss_pushbutton == get(handles.ss_radiob,'Min') && tf_pushbutton == get(handles.tf_radiob,'Min')
    errordlg('First Enter either "State Space" or "Transfer Function"');
end

%================= Implementing Transfer Function ====================
if tf_pushbutton == get(handles.tf_radiob,'Max') && ss_pushbutton == get(handles.ss_radiob,'Min')
    num= get (handles.num_edit,'string');
    num_dou = str2num(num);
    
    den= get (handles.den_edit,'string');
    den_dou = str2num(den);
    
    %================= Error If Either Num or Den is empty ==============
    if isempty(num_dou) || isempty(den_dou)
        errordlg('Please Enter "Transfer Function"');
    end

    sys_tf = tf(num_dou,den_dou);
    figure
    nichols(sys_tf),title('Nichols Chat Without Controller'),grid on
end

%================= Implementing State Space Model ====================

if ss_pushbutton == get(handles.ss_radiob,'Max') && tf_pushbutton == get(handles.tf_radiob,'Min')
        
    a= get(handles.A_edit,'String');
    a_dou = str2num(a);
    
    b= get(handles.B_edit,'String');
    b_dou = str2num(b);
    
    c= get(handles.C_edit,'String');
    c_dou = str2num(c);
    
    d= get(handles.D_edit,'String');
    d_dou = str2num(d);
    
    %================= Error If Either A,B,C or D is empty ==============
    
    if isempty(a_dou) || isempty(b_dou) || isempty(c_dou) || isempty(d_dou)
        errordlg('Please enter all A,B,C and D');
    end

    sys_ss = ss(a_dou,b_dou,c_dou,d_dou);
    figure
    nichols(sys_ss),title('Nichols Chat Without Controller'),grid on
end
%=====================================================================

% --------------------------------------------------------------------
function BPC_Callback(hObject, eventdata, handles)
% hObject    handle to BPC (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)

value = get(handles.PID_popupmenu,'Value');

if value == 1
    global sys_fd_P
    figure,bode(sys_fd_P),title('Bode Plot With Proportional Controller'),grid on
end

if value == 2
    global sys_fd_PI
    figure,bode(sys_fd_PI),title('Bode Plot With Proportional Integral Controller'),grid on
end

if value == 3
    global sys_fd_PD
    figure,bode(sys_fd_PD),title('Bode Plot With Proportional Derivative Controller'),grid on
end

if value == 4
    global sys_fd_PID
    figure,bode(sys_fd_PID),title('Bode Plot With PID Controller'),grid on
end

% --------------------------------------------------------------------
function NPC_Callback(hObject, eventdata, handles)
% hObject    handle to NPC (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)

value = get(handles.PID_popupmenu,'Value');

if value == 1
    global sys_fd_P
    figure,nyquist(sys_fd_P),title('Nyquist Plot With Proportional Controller'),grid on
end

if value == 2
    global sys_fd_PI
    figure,nyquist(sys_fd_PI),title('Nyquist Plot With Proportional Integral Controller'),grid on
end

if value == 3
    global sys_fd_PD
    figure,nyquist(sys_fd_PD),title('Nyquist Plot With Proportional Derivative Controller'),grid on
end

if value == 4
    global sys_fd_PID
    figure,nyquist(sys_fd_PID),title('Nyquist Plot With PID Controller'),grid on
end

% --------------------------------------------------------------------
function NCC_Callback(hObject, eventdata, handles)
% hObject    handle to NCC (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)

value = get(handles.PID_popupmenu,'Value');

if value == 1
    global sys_fd_P
    figure,nichols(sys_fd_P),title('Nichols ChartWith Proportional Controller'),grid on
end

if value == 2
    global sys_fd_PI
    figure,nichols(sys_fd_PI),title('Nichols Chart With Proportional Integral Controller'),grid on
end

if value == 3
    global sys_fd_PD
    figure,nichols(sys_fd_PD),title('Nichols Chart With Proportional Derivative Controller'),grid on
end

if value == 4
    global sys_fd_PID
    figure,nichols(sys_fd_PID),title('Nichols Chart With PID Controller'),grid on
end

% --------------------------------------------------------------------
function RLWC_Callback(hObject, eventdata, handles)
% hObject    handle to RLWC (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)

%====================== Values from Radio Button ======================
tf_pushbutton = get (handles.tf_radiob,'Value');
ss_pushbutton = get(handles.ss_radiob,'Value');

%================= Error If both Options Selected ====================
if ss_pushbutton == get(handles.ss_radiob,'Max') && tf_pushbutton == get(handles.tf_radiob,'Max')
    errordlg('Select One Option from "State Space" or "Transfer Function"');
end

%================= Error If both were not Selected ===================
if ss_pushbutton == get(handles.ss_radiob,'Min') && tf_pushbutton == get(handles.tf_radiob,'Min')
    errordlg('First Enter either "State Space" or "Transfer Function"');
end

%================= Implementing Transfer Function ====================
if tf_pushbutton == get(handles.tf_radiob,'Max') && ss_pushbutton == get(handles.ss_radiob,'Min')
    num= get (handles.num_edit,'string');
    num_dou = str2num(num);
    
    den= get (handles.den_edit,'string');
    den_dou = str2num(den);
    
    %================= Error If Either Num or Den is empty ==============
    if isempty(num_dou) || isempty(den_dou)
        errordlg('Please Enter "Transfer Function"');
    end
    
    sys_tf = tf(num_dou,den_dou);
    figure
    rlocus(sys_tf),title('Root Locus Without Controller')
end

%================= Implementing State Space Model ====================

if ss_pushbutton == get(handles.ss_radiob,'Max') && tf_pushbutton == get(handles.tf_radiob,'Min')
       
    a= get(handles.A_edit,'String');
    a_dou = str2num(a);
    
    b= get(handles.B_edit,'String');
    b_dou = str2num(b);
    
    c= get(handles.C_edit,'String');
    c_dou = str2num(c);
    
    d= get(handles.D_edit,'String');
    d_dou = str2num(d);
    
    %================= Error If Either A,B,C or D is empty ==============
    
    if isempty(a_dou) || isempty(b_dou) || isempty(c_dou) || isempty(d_dou)
        errordlg('Please enter all A,B,C and D');
    end
    
    sys_ss = ss(a_dou,b_dou,c_dou,d_dou);
    figure
    rlocus(sys_ss),title('Root Locus Without Controller'),grid on
end

% --------------------------------------------------------------------
function RLC_Callback(hObject, eventdata, handles)
% hObject    handle to RLC (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)

value = get(handles.PID_popupmenu,'Value');

if value == 1
    global sys_fd_P
    figure,rlocus(sys_fd_P),title('Root Locus With Proportional Controller')
end

if value == 2
    global sys_fd_PI
    figure,rlocus(sys_fd_PI),title('Root Locus With Proportional Integral Controller')
end

if value == 3
    global sys_fd_PD
    figure,rlocus(sys_fd_PD),title('Root Locus With Proportional Derivative Controller')
end

if value == 4
    global sys_fd_PID
    figure,rlocus(sys_fd_PID),title('Root Locus With PID Controller')
end

% --------------------------------------------------------------------

function Untitled_2_Callback(hObject, eventdata, handles)
% hObject    handle to Untitled_2 (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)


% --------------------------------------------------------------------
function Untitled_3_Callback(hObject, eventdata, handles)
% hObject    handle to Untitled_3 (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)


% --------------------------------------------------------------------
function Untitled_4_Callback(hObject, eventdata, handles)
% hObject    handle to Untitled_4 (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)




% --------------------------------------------------------------------


% --- Executes on selection change in TAFR_popupmenu.
function TAFR_popupmenu_Callback(hObject, eventdata, handles)
% hObject    handle to TAFR_popupmenu (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)

% Hints: contents = get(hObject,'String') returns TAFR_popupmenu contents as cell array
%        contents{get(hObject,'Value')} returns selected item from TAFR_popupmenu


% --- Executes during object creation, after setting all properties.
function TAFR_popupmenu_CreateFcn(hObject, eventdata, handles)
% hObject    handle to TAFR_popupmenu (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    empty - handles not created until after all CreateFcns called