fourpole.m

控制系统仿真中的根轨迹MATLAB仿真源码

function varargout = fourpole(varargin)
% FOURPOLE M-file for fourpole.fig
%      FOURPOLE, by itself, creates a new FOURPOLE or raises the existing
%      singleton*.
%
%      H = FOURPOLE returns the handle to a new FOURPOLE or the handle to
%      the existing singleton*.
%
%      FOURPOLE('CALLBACK',hObject,eventData,handles,...) calls the local
%      function named CALLBACK in FOURPOLE.M with the given input arguments.
%
%      FOURPOLE('Property','Value',...) creates a new FOURPOLE or raises the
%      existing singleton*.  Starting from the left, property value pairs are
%      applied to the GUI before fourpole_OpeningFunction gets called.  An
%      unrecognized property name or invalid value makes property application
%      stop.  All inputs are passed to fourpole_OpeningFcn via varargin.
%
%      *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 fourpole

% Last Modified by GUIDE v2.5 26-May-2005 15:11:13

% Begin initialization code - DO NOT EDIT
gui_Singleton = 1;
gui_State = struct('gui_Name',       mfilename, ...
                   'gui_Singleton',  gui_Singleton, ...
                   'gui_OpeningFcn', @fourpole_OpeningFcn, ...
                   'gui_OutputFcn',  @fourpole_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 fourpole is made visible.
function fourpole_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   command line arguments to fourpole (see VARARGIN)

% Choose default command line output for fourpole
handles.output = hObject;

% Update handles structure
guidata(hObject, handles);

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

%设置当前窗口名
str='四个极点的分布的根轨迹图';
set(gcf,'name',str,'numbertitle','off')

% --- Outputs from this function are returned to the command line.
function varargout = fourpole_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;

%画出四个极点不同分布情况的四个根轨迹图
z=[];
p=[0 -8 -4+4i -4-4i];
sys=zpk(z,p,1)
subplot(221)
rlocus(sys)
z=[];
p=[0 -8 -6+4i -6-4i];
sys=zpk(z,p,1)
subplot(222)
rlocus(sys)
z=[];
p=[0 -8 -4+8i -4-8i];
sys=zpk(z,p,1)
subplot(223)
rlocus(sys)
z=[];
p=[0 -8 -2+8i -2-8i];
sys=zpk(z,p,1)
subplot(224)
rlocus(sys)


% --------------------------------------------------------------------
function analyze_Callback(hObject, eventdata, handles)
% hObject    handle to analyze (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)
analyze2

% --------------------------------------------------------------------
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)

%关闭窗口提示对话框
button=questdlg('Do you want to close this window?',...
    'Close Operation','Yes','No','No');
if strcmp(button,'Yes')
   close
elseif strcmp(button,'No')
    disp('Canceled file operation')
end