bodedelay.m

guide的玻德图绘制。应用matlab的绘图功能等。

function varargout = bodedelay(varargin)
% BODEDELAY M-file for bodedelay.fig
%      BODEDELAY, by itself, creates a new BODEDELAY or raises the existing
%      singleton*.
%
%      H = BODEDELAY returns the handle to a new BODEDELAY or the handle to
%      the existing singleton*.
%
%      BODEDELAY('Property','Value',...) creates a new BODEDELAY using the
%      given property value pairs. Unrecognized properties are passed via
%      varargin to bodedelay_OpeningFcn.  This calling syntax produces a
%      warning when there is an existing singleton*.
%
%      BODEDELAY('CALLBACK') and BODEDELAY('CALLBACK',hObject,...) call the
%      local function named CALLBACK in BODEDELAY.M with the given input
%      arguments.
%
%      *See GUI Options on GUIDE's Tools menu.  Choose "GUI allows only one
%      instance to run (singleton)".
%
% See also: GUIDE, GUIDATA, GUIHANDLES

% Edit the above text to modify the response to help bodedelay

% Last Modified by GUIDE v2.5 01-May-2005 16:07:57

% Begin initialization code - DO NOT EDIT
gui_Singleton = 1;
gui_State = struct('gui_Name',       mfilename, ...
                   'gui_Singleton',  gui_Singleton, ...
                   'gui_OpeningFcn', @bodedelay_OpeningFcn, ...
                   'gui_OutputFcn',  @bodedelay_OutputFcn, ...
                   'gui_LayoutFcn',  [], ...
                   'gui_Callback',   []);
if nargin & isstr(varargin{1})
    gui_State.gui_Callback = str2func(varargin{1});
end

if nargout
    [varargout{1:nargout}] = gui_mainfcn(gui_State, varargin{:});
else
    gui_mainfcn(gui_State, varargin{:});
end
% End initialization code - DO NOT EDIT


% --- Executes just before bodedelay is made visible.
function bodedelay_OpeningFcn(hObject, eventdata, handles, varargin)
% This function has no output args, see OutputFcn.
% hObject    handle to figure
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)
% varargin   unrecognized PropertyName/PropertyValue pairs from the
%            command line (see VARARGIN)
Handle_text = findobj('Tag','layoutedit');
    %当没有选择要进行何种分析时，文本窗口中给出如下提示。
    Str(1) = {'在右边选择响的系统模型'};
    Str(2) = {'然后输入参数'};
    Str(3) = {'上图将显示分结果'};
   
    set(Handle_text,'String',Str);
% Choose default command line output for bodedelay
handles.output = hObject;

% Update handles structure
guidata(hObject, handles);

% UIWAIT makes bodedelay wait for user response (see UIRESUME)
% uiwait(handles.figure1);


% --- Outputs from this function are returned to the command line.
function varargout = bodedelay_OutputFcn(hObject, eventdata, handles)
% varargout  cell array for returning output args (see VARARGOUT);
% hObject    handle to figure
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)

% Get default command line output from handles structure
varargout{1} = handles.output;


% --- Executes on button press in bodedrew.
function bodedrew_Callback(hObject, eventdata, handles)
% hObject    handle to bodedrew (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)
Val_Selection = get(findobj('Tag','passorzp'),'Value');
Val_clooporopen = get(findobj('Tag','clooporopen'),'Value');



%--------根据判断建立相应的模型---------
switch Val_Selection
%----获得传递函数形式的输入 ---------- 
    case 1
        Handle_numorzero    =      findobj( 'Tag','numorzero');
        Val_numzero         =      get(Handle_numorzero,'String');
        Val_num             =      str2num(Val_numzero);
        
        Handle_denorp       =      findobj('Tag','denorp');
        Val_denp            =      get(Handle_denorp,'String');
        Val_den             =      str2num(Val_denp);
        
        Handle_kedit        =      findobj('Tag','kedit');
        Val_kedit           =      get (Handle_kedit,'String');
        Val_k               =      str2num(Val_kedit);
        
        num                 =      Val_num*Val_k;
        den                 =      Val_den;
%获得零极点形式的输入 
    case 2                 
        Handle_numorzero    =      findobj( 'Tag','numorzero');
        Val_numzero         =      get (Handle_numorzero,'String');
        Val_zero            =      str2num(Val_numzero);
        
        Handle_denorp       =      findobj('Tag','denorp');
        Val_denorp          =      get(Handle_denorp,'String');
        Val_p               =      str2num(Val_denorp);
        
        Handle_kedit        =      findobj('Tag','kedit');
        Val_kedit           =      get (Handle_kedit,'String');
        Val_k               =      str2num(Val_kedit);
        
        [num,den]        =      zp2tf(Val_zero,Val_p,Val_k);    
end

%------判断输入模型为开环or闭环并建立相应的模型-------
if (Val_clooporopen ==2)
    [numc,denc] = cloop(num,den);
    sys = tf(numc,denc);
    [z,p,k] = tf2zp(numc,denc);
else 
    numc = num;
    denc = den;
    sys = tf(numc,denc);
    [z,p,k] = tf2zp(numc,denc);
end
bode(sys);
flag =real(p);
%当系统在s坐标平面的右半侧有极点时，系统不稳定。
if (find(flag>0)~=0)
    Handle_text = findobj('Tag','layoutedit');
    Str(1) = {''};
    Str(2) = {'该系统不稳定'};
    set (Handle_text,'String',Str);
 %当系统有0极点是，该系统处于临届稳定状态。    
elseif (find(flag==0)~=0)
    Handle_text = findobj('Tag','layoutedit');
    Str(1) = {''};
    Str(2) = {'该系统处于临届稳定状态'};
    set (Handle_text,'String',Str);
%当该系统的极点全部位于s平面的左半面时，该系统处于稳定状态。    
else
    Handle_text = findobj('Tag','layoutedit');
    Str(1) = {'该系统稳定'};
%该系统稳定，并给出相应的频域参数。    
    [M,P,w] = bode(sys);
    [GM,PM,wcg,wcp] = margin(M,P,w);
    Str(2) = {'该系统的增益裕量为:'};
    Str(3) = {GM};
    Str(4) = {'该系统的相位裕量为:'};
    Str(5) = {PM};
    Str(6) = {'该系统的相位交界频率为:'};
    Str(7) = {wcg};
    Str(8) = {'该系统的增益交界频率为:'};
    Str(9) = {wcp};
    set(Handle_text,'String',Str);
end