lab42.m

xnsy算法的matlab实现

function [ret,x0,str,ts,xts]=lab42(t,x,u,flag);
%LAB42	is the M-file description of the SIMULINK system named LAB42.
%	The block-diagram can be displayed by typing: LAB42.
%
%	SYS=LAB42(T,X,U,FLAG) returns depending on FLAG certain
%	system values given time point, T, current state vector, X,
%	and input vector, U.
%	FLAG is used to indicate the type of output to be returned in SYS.
%
%	Setting FLAG=1 causes LAB42 to return state derivatives, FLAG=2
%	discrete states, FLAG=3 system outputs and FLAG=4 next sample
%	time. For more information and other options see SFUNC.
%
%	Calling LAB42 with a FLAG of zero:
%	[SIZES]=LAB42([],[],[],0),  returns a vector, SIZES, which
%	contains the sizes of the state vector and other parameters.
%		SIZES(1) number of states
%		SIZES(2) number of discrete states
%		SIZES(3) number of outputs
%		SIZES(4) number of inputs
%		SIZES(5) number of roots (currently unsupported)
%		SIZES(6) direct feedthrough flag
%		SIZES(7) number of sample times
%
%	For the definition of other parameters in SIZES, see SFUNC.
%	See also, TRIM, LINMOD, LINSIM, EULER, RK23, RK45, ADAMS, GEAR.

% Note: This M-file is only used for saving graphical information;
%       after the model is loaded into memory an internal model
%       representation is used.

% the system will take on the name of this mfile:
sys = mfilename;
new_system(sys)
simver(1.3)
if (0 == (nargin + nargout))
     set_param(sys,'Location',[133,199,567,499])
     open_system(sys)
end;
set_param(sys,'algorithm',     'RK-45')
set_param(sys,'Start time',    '0.0')
set_param(sys,'Stop time',     '50')
set_param(sys,'Min step size', '0.0001')
set_param(sys,'Max step size', '10')
set_param(sys,'Relative error','1e-3')
set_param(sys,'Return vars',   '')

add_block('built-in/Step Fcn',[sys,'/','阶跃函数'])
set_param([sys,'/','阶跃函数'],...
		'Font Size',11,...
		'Time','0',...
		'position',[30,110,50,130])

add_block('built-in/Sum',[sys,'/','加法器'])
set_param([sys,'/','加法器'],...
		'Font Size',11,...
		'inputs','+-',...
		'position',[110,115,130,135])

add_block('built-in/Transfer Fcn',[sys,'/','被控对象'])
set_param([sys,'/','被控对象'],...
		'Font Size',11,...
		'Numerator','N',...
		'Denominator','D',...
		'position',[195,110,255,140])

add_block('built-in/Scope',[sys,'/','示波器'])
set_param([sys,'/','示波器'],...
		'Font Size',11,...
		'Vgain','3.000000',...
		'Hgain','50.000000',...
		'Vmax','6.000000',...
		'Hmax','100.000000',...
		'Window',[588,234,789,384])
open_system([sys,'/','示波器'])
set_param([sys,'/','示波器'],...
		'Mask Display','',...
		'position',[385,112,405,138])


%     Subsystem  ['Double click here',13,'to start loading data',13,'and mu-syn design'].

new_system([sys,'/',['Double click here',13,'to start loading data',13,'and mu-syn design']])
set_param([sys,'/',['Double click here',13,'to start loading data',13,'and mu-syn design']],'Location',[2,439,106,512])
set_param([sys,'/',['Double click here',13,'to start loading data',13,'and mu-syn design']],...
		'Mask Display','初始化',...
		'Mask Dialogue','eval(''clc;clear all;N=[28 28];D=[1 3 12 -16 0];printsys(N,D);'')')


%     Finished composite block ['Double click here',13,'to start loading data',13,'and mu-syn design'].

set_param([sys,'/',['Double click here',13,'to start loading data',13,'and mu-syn design']],...
		'ForeGround',4,...
		'hide name',0,...
		'Drop Shadow',4,...
		'position',[110,215,175,247])

add_block('built-in/Note',[sys,'/','根轨迹实验窗口'])
set_param([sys,'/','根轨迹实验窗口'],...
		'ForeGround',4,...
		'Font Size',16,...
		'position',[215,40,220,45])


%     Subsystem  ['Double click here',13,'to show bode plot ',13,'of controller1'].

new_system([sys,'/',['Double click here',13,'to show bode plot ',13,'of controller1']])
set_param([sys,'/',['Double click here',13,'to show bode plot ',13,'of controller1']],'Location',[2,439,106,512])
set_param([sys,'/',['Double click here',13,'to show bode plot ',13,'of controller1']],...
		'Mask Display','根轨迹图')
set_param([sys,'/',['Double click here',13,'to show bode plot ',13,'of controller1']],...
		'Mask Dialogue','eval(''figure;rloc1(N,D);grid on;set(gcf,''''name'''',''''根轨迹图'''');title(''''系统根轨迹图'''');xlabel(''''实     轴'''');ylabel(''''虚     轴'''');'')')


%     Finished composite block ['Double click here',13,'to show bode plot ',13,'of controller1'].

set_param([sys,'/',['Double click here',13,'to show bode plot ',13,'of controller1']],...
		'ForeGround',4,...
		'hide name',0,...
		'Drop Shadow',4,...
		'position',[245,215,310,245])
add_line(sys,[260,125;380,125])
add_line(sys,[55,120;105,120])
add_line(sys,[260,125;350,125;350,180;80,180;80,130;105,130])
add_line(sys,[135,125;190,125])

drawnow

% Return any arguments.
if (nargin | nargout)
	% Must use feval here to access system in memory
	if (nargin > 3)
		if (flag == 0)
			eval(['[ret,x0,str,ts,xts]=',sys,'(t,x,u,flag);'])
		else
			eval(['ret =', sys,'(t,x,u,flag);'])
		end
	else
		[ret,x0,str,ts,xts] = feval(sys);
	end
else
	drawnow % Flash up the model and execute load callback
end