signal.asv

关于小车阶跃响应与自然响应的可视化实现！

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

% Last Modified by GUIDE v2.5 08-Jun-2007 10:59:42

% Begin initialization code - DO NOT EDIT
gui_Singleton = 1;
gui_State = struct('gui_Name',       mfilename, ...
                   'gui_Singleton',  gui_Singleton, ...
                   'gui_OpeningFcn', @signal_OpeningFcn, ...
                   'gui_OutputFcn',  @signal_OutputFcn, ...
                   'gui_LayoutFcn',  [] , ...
                   'gui_Callback',   []);
if nargin && ischar(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 signal is made visible.
function signal_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 signal (see VARARGIN)
%用长方形代表小车
%创建汽车图形的左边
yleft=1.25:0.01:2.75;
xleft=zeros(1,151);
%创建汽车图形的右边
yright=yleft;
xright=xleft+0.5;
%创建汽车在坐标系中的上边，下边
xx=xleft:0.01:xright;
gtop=ones(1,length(xx))*1.25;
fbottom=ones(1,length(xx)).*2.75;
axes(handles.drawmovie);%指定汽车坐标系
%画出汽车图形
plot(xleft,yleft,'g'),axis([0,11,0,3.5]);
box off;hold on;%关闭汽车坐标系的右边和上边的坐标显示及保持住图形
plot(xright,yright,'g'),axis([0,11,0,3.5]);
plot(xx,gtop,'g'),axis([0,11,0,3.5]);
plot(xx,fbottom,'g'),axis([0,11,0,3.5]);
%标记坐标轴
xlabel('汽车移动演示','FontSize',10);
ylabel('长方形代表汽车','FontSize',10);
axes(handles.drawcurve);%指定位移变化坐标系
axis([0,10,0,10.6]);grid on;box on;
%标记坐标轴
xlabel('时间','FontSize',10);
ylabel('路程','FontSize',10);
axes(handles.drawspeed);%指定速度坐标系
axis([0,10,0,10.6]);grid on;box on;
%标记坐标轴
xlabel('时间','FontSize',10);
ylabel('速度','FontSize',10);

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

% Update handles structure
guidata(hObject, handles);

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


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



function shurum_Callback(hObject, eventdata, handles)
% hObject    handle to shurum (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 shurum as text
%        str2double(get(hObject,'String')) returns contents of shurum as a double


% --- Executes during object creation, after setting all properties.
function shurum_CreateFcn(hObject, eventdata, handles)
% hObject    handle to shurum (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 && isequal(get(hObject,'BackgroundColor'), get(0,'defaultUicontrolBackgroundColor'))
    set(hObject,'BackgroundColor','white');
end



function shurukf_Callback(hObject, eventdata, handles)
% hObject    handle to shurukf (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 shurukf as text
%        str2double(get(hObject,'String')) returns contents of shurukf as a double


% --- Executes during object creation, after setting all properties.
function shurukf_CreateFcn(hObject, eventdata, handles)
% hObject    handle to shurukf (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 && isequal(get(hObject,'BackgroundColor'), get(0,'defaultUicontrolBackgroundColor'))
    set(hObject,'BackgroundColor','white');
end



function shuruspeed_Callback(hObject, eventdata, handles)
% hObject    handle to shuruspeed (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 shuruspeed as text
%        str2double(get(hObject,'String')) returns contents of shuruspeed as a double


% --- Executes during object creation, after setting all properties.
function shuruspeed_CreateFcn(hObject, eventdata, handles)
% hObject    handle to shuruspeed (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 && isequal(get(hObject,'BackgroundColor'), get(0,'defaultUicontrolBackgroundColor'))
    set(hObject,'BackgroundColor','white');
end


% --- Executes on button press in ziran.
function ziran_Callback(hObject, eventdata, handles)
% hObject    handle to ziran (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)
global exit;
global pauseture;
m=str2double(get(handles.shurum,'String'));%从输入框中获取质量值
kf=str2double(get(handles.shurukf,'String'));%从输入框中获取摩擦系数值
speed=str2double(get(handles.shuruspeed,'String'));%从输入框中获取初始速度值
time=str2double(get(handles.shurutime,'String'));%从输入框中获取响应显示时间范围值
if m & kf & speed & time%判断输入各项值是否符合实际
    set(handles.jieyue,'Enable','off');%关闭阶跃响应按钮的可用性
    %求出响应的特征值
    a=[m,kf,0];
    y0=[0,speed];
    p=roots(a);
    v=rot90(vander(p));%创建范德蒙矩阵
    c=v\y0';
    t=0:0.1:time;
    %求出自然响应在此时间范围内的最大值和最小值
    for kt=0:1:length(t)
        yqiu(kt+1)=c(1)*exp(p(1)*kt*0.1)+c(2)*exp(p(2)*kt*0.1);%自然响应的位移方程
        dyqiu(kt+1)=c(1)*p(1)*0.1*exp(p(1)*kt*0.1)+c(2)*p(2)*0.1*exp(p(2)*kt*0.1);%自然响应的速度方程
    end
    ymax=max(yqiu);
    ymin=min(yqiu);
    dymax=max(dyqiu);
    dymin=min(dyqiu);
    %不断构建汽车移动和自然响应曲线的动画，并使他们相互联系
    exit=0;%为了消除退出后再重新进入时exit为1仍在系统中，特消除一下
    pauseture=0;%为了消除退出后再重新进入时可能pauseture为1仍在系统中，特消除一下
    for kt=0:1:length(t)
        if exit==1
            close;
        else
            y(kt+1)=c(1)*exp(p(1)*kt*0.1)+c(2)*exp(p(2)*kt*0.1);%自然响应的位移方程
            dy(kt+1)=c(1)*p(1)*0.1*exp(p(1)*kt*0.1)+c(2)*p(2)*0.1*exp(p(2)*kt*0.1);%自然响应的速度方程
            ta(kt+1)=kt*0.1;
            %创建汽车图形的左边