zhang2.m

控制系统仿真中的频率特性的MATLAB源码

     %绘制闭环bode图
   w=logspace(-1,2);
    [m,p]=bode(numc,denc,w);
    subplot('position',[0.44,0.69,0.48,0.2]);
    semilogx(w,20*log10(m));
title('闭环bode图');
    ylabel('幅值') ;
    grid on;
    subplot('position',[0.44,0.42,0.48,0.2]);
    semilogx(w,p);
    xlabel('频率');
    ylabel('相角');
  
    grid on;
     %计算频域特性指标并显示
sys1=tf(numc,denc)
     [Gm,Pm,Wcg,Wcp]=margin(sys1)
  set(handles.edit5,'string',Gm)
  set(handles.edit6,'string',Pm)
  set(handles.edit7,'string',Wcg)
  set(handles.edit8,'string',Wcp)
  set(handles.edit5,'visible','on')
  set(handles.edit6,'visible','on')
  set(handles.edit7,'visible','on')
  set(handles.edit8,'visible','on')
  set(handles.text9,'visible','on')
  set(handles.text10,'visible','on')
  set(handles.text11,'visible','on')
  set(handles.text12,'visible','on')
  set(handles.pushbutton5,'visible','on')
set(handles.pushbutton8,'visible','off') 
% --- Executes on button press in radiobutton3.
function radiobutton3_Callback(hObject, eventdata, handles)
% hObject    handle to radiobutton3 (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)

% Hint: get(hObject,'Value') returns toggle state of radiobutton3
%选择单选按钮
set(handles.radiobutton3,'value',1)
set(handles.radiobutton1,'value',0)
set(handles.radiobutton2,'value',0)
set(handles.radiobutton4,'value',0)
%获得输入数值
  A=str2num(get(handles.edit1,'string'))
    B=str2num(get(handles.edit2,'string'))
    C=str2num(get(handles.edit3,'string'))
    D=str2num(get(handles.edit4,'string'))
    sys=ss(A,B,C,D)
     %绘制nyquist曲线
    subplot('position',[0.45,0.25,0.5,0.7])
    nyquist(sys)
    grid on
    title('nyquist曲线')
    xlabel('实轴')
    ylabel('虚轴')
  set(handles.edit5,'visible','off')
  set(handles.edit6,'visible','off')
  set(handles.edit7,'visible','off')
  set(handles.edit8,'visible','off')
  set(handles.text9,'visible','off')
  set(handles.text10,'visible','off')
  set(handles.text11,'visible','off')
  set(handles.text12,'visible','off')
  set(handles.pushbutton8,'visible','on')
set(handles.pushbutton5,'visible','off')
 
% --- Executes on button press in radiobutton4.
function radiobutton4_Callback(hObject, eventdata, handles)
% hObject    handle to radiobutton4 (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)

% Hint: get(hObject,'Value') returns toggle state of radiobutton4
%选择单选按钮
set(handles.radiobutton4,'value',1)
set(handles.radiobutton1,'value',0)
set(handles.radiobutton2,'value',0)
set(handles.radiobutton3,'value',0)
%获得输入数值
  A=str2num(get(handles.edit1,'string'))
    B=str2num(get(handles.edit2,'string'))
    C=str2num(get(handles.edit3,'string'))
    D=str2num(get(handles.edit4,'string'))
    sys=ss(A,B,C,D)
     %绘制nichols曲线
    subplot('position',[0.45,0.22,0.5,0.65])
  nichols(sys)
   grid on
   title('nichols曲线')
   xlabel('开环相角 ')
   ylabel('开环增益')
  set(handles.edit5,'visible','off')
  set(handles.edit6,'visible','off')
  set(handles.edit7,'visible','off')
  set(handles.edit8,'visible','off')
  set(handles.text9,'visible','off')
  set(handles.text10,'visible','off')
  set(handles.text11,'visible','off')
  set(handles.text12,'visible','off')
set(handles.pushbutton5,'visible','off')
set(handles.pushbutton8,'visible','off')
% --- Executes on button press in pushbutton1.
function pushbutton1_Callback(hObject, eventdata, handles)
% hObject    handle to pushbutton1 (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)
zyx9
% --- Executes on button press in pushbutton2.
function pushbutton2_Callback(hObject, eventdata, handles)
% hObject    handle to pushbutton2 (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)

close


% --- Executes during object creation, after setting all properties.
function edit5_CreateFcn(hObject, eventdata, handles)
% hObject    handle to edit5 (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    empty - handles not created until after all CreateFcns called

% Hint: edit controls usually have a white background on Windows.
%       See ISPC and COMPUTER.
if ispc
    set(hObject,'BackgroundColor','white');
else
    set(hObject,'BackgroundColor',get(0,'defaultUicontrolBackgroundColor'));
end



function edit5_Callback(hObject, eventdata, handles)
% hObject    handle to edit5 (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)

% Hints: get(hObject,'String') returns contents of edit5 as text
%        str2double(get(hObject,'String')) returns contents of edit5 as a double


% --- Executes during object creation, after setting all properties.
function edit6_CreateFcn(hObject, eventdata, handles)
% hObject    handle to edit6 (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    empty - handles not created until after all CreateFcns called

% Hint: edit controls usually have a white background on Windows.
%       See ISPC and COMPUTER.
if ispc
    set(hObject,'BackgroundColor','white');
else
    set(hObject,'BackgroundColor',get(0,'defaultUicontrolBackgroundColor'));
end



function edit6_Callback(hObject, eventdata, handles)
% hObject    handle to edit6 (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)

% Hints: get(hObject,'String') returns contents of edit6 as text
%        str2double(get(hObject,'String')) returns contents of edit6 as a double


% --- Executes during object creation, after setting all properties.
function edit7_CreateFcn(hObject, eventdata, handles)
% hObject    handle to edit7 (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    empty - handles not created until after all CreateFcns called

% Hint: edit controls usually have a white background on Windows.
%       See ISPC and COMPUTER.
if ispc
    set(hObject,'BackgroundColor','white');
else
    set(hObject,'BackgroundColor',get(0,'defaultUicontrolBackgroundColor'));
end



function edit7_Callback(hObject, eventdata, handles)
% hObject    handle to edit7 (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)

% Hints: get(hObject,'String') returns contents of edit7 as text
%        str2double(get(hObject,'String')) returns contents of edit7 as a double


% --- Executes during object creation, after setting all properties.
function edit8_CreateFcn(hObject, eventdata, handles)
% hObject    handle to edit8 (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    empty - handles not created until after all CreateFcns called

% Hint: edit controls usually have a white background on Windows.
%       See ISPC and COMPUTER.
if ispc
    set(hObject,'BackgroundColor','white');
else
    set(hObject,'BackgroundColor',get(0,'defaultUicontrolBackgroundColor'));
end



function edit8_Callback(hObject, eventdata, handles)
% hObject    handle to edit8 (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)

% Hints: get(hObject,'String') returns contents of edit8 as text
%        str2double(get(hObject,'String')) returns contents of edit8 as a double


% --- Executes on button press in pushbutton3.
function pushbutton3_Callback(hObject, eventdata, handles)
% hObject    handle to pushbutton3 (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)


% --- Executes on button press in pushbutton5.
function pushbutton5_Callback(hObject, eventdata, handles)
% hObject    handle to pushbutton5 (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)
zyx9

% --- Executes on button press in pushbutton6.
function pushbutton6_Callback(hObject, eventdata, handles)
% hObject    handle to pushbutton6 (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)


close


% --- Executes on button press in pushbutton8.
function pushbutton8_Callback(hObject, eventdata, handles)
% hObject    handle to pushbutton8 (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)
analysis2