wxst1.m

信号实验常用的simulink模型和mfile,可直接在matlan下运行。

function [ret,x0,str,ts,xts]=wxst1(t,x,u,flag);
%WXST1	is the M-file description of the SIMULINK system named WXST1.
%	The block-diagram can be displayed by typing: WXST1.
%
%	SYS=WXST1(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 WXST1 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 WXST1 with a FLAG of zero:
%	[SIZES]=WXST1([],[],[],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',[4,42,628,440])
     open_system(sys)
end;
set_param(sys,'algorithm',     'RK-45')
set_param(sys,'Start time',    '0')
set_param(sys,'Stop time',     '100')
set_param(sys,'Min step size', '1e-6')
set_param(sys,'Max step size', '0.01')
set_param(sys,'Relative error','1e-3')
set_param(sys,'Return vars',   '')

add_block('built-in/Product',[sys,'/','乘法器'])
set_param([sys,'/','乘法器'],...
		'Font Name','宋体',...
		'Font Size',12,...
		'position',[170,58,200,107])

add_block('built-in/Sine Wave',[sys,'/',' 正弦波'])
set_param([sys,'/',' 正弦波'],...
		'Font Name','宋体',...
		'Font Size',12,...
		'frequency','100',...
		'position',[55,108,90,142])


%     Subsystem  '脉冲发生器'.

new_system([sys,'/','脉冲发生器'])
set_param([sys,'/','脉冲发生器'],'Location',[158,441,759,682])

add_block('built-in/Unit Delay',[sys,'/','脉冲发生器/Unit Delay1'])
set_param([sys,'/','脉冲发生器/Unit Delay1'],...
		'orientation',2,...
		'Sample time','[Ts,st2]',...
		'x0','ini',...
		'position',[140,165,190,185])

add_block('built-in/Unit Delay',[sys,'/','脉冲发生器/Unit Delay'])
set_param([sys,'/','脉冲发生器/Unit Delay'],...
		'orientation',2,...
		'Sample time','[Ts,st1]',...
		'position',[145,75,195,95])

add_block('built-in/Constant',[sys,'/','脉冲发生器/Constant'])
set_param([sys,'/','脉冲发生器/Constant'],...
		'position',[25,30,45,50])

add_block('built-in/Sum',[sys,'/','脉冲发生器/Sum'])
set_param([sys,'/','脉冲发生器/Sum'],...
		'hide name',0,...
		'inputs','+-',...
		'position',[135,35,155,55])

add_block('built-in/Sum',[sys,'/','脉冲发生器/Sum1'])
set_param([sys,'/','脉冲发生器/Sum1'],...
		'hide name',0,...
		'inputs','+-',...
		'position',[130,120,150,140])

add_block('built-in/Relational Operator',[sys,'/',['脉冲发生器/Relational',13,'operator']])
set_param([sys,'/',['脉冲发生器/Relational',13,'operator']],...
		'hide name',0,...
		'position',[370,102,400,133])

add_block('built-in/Clock',[sys,'/','脉冲发生器/Clock1'])
set_param([sys,'/','脉冲发生器/Clock1'],...
		'hide name',0,...
		'position',[295,100,315,120])

add_block('built-in/Constant',[sys,'/','脉冲发生器/Constant1'])
set_param([sys,'/','脉冲发生器/Constant1'],...
		'Value','stt',...
		'position',[295,149,320,171])

add_block('built-in/Logical Operator',[sys,'/',['脉冲发生器/Logical',13,'Operator']])
set_param([sys,'/',['脉冲发生器/Logical',13,'Operator']],...
		'Operator','XOR',...
		'position',[285,38,315,62])

add_block('built-in/Logical Operator',[sys,'/',['脉冲发生器/Logical',13,'Operator1']])
set_param([sys,'/',['脉冲发生器/Logical',13,'Operator1']],...
		'Operator','NOT',...
		'Number of Input Ports','1',...
		'position',[355,38,385,62])

add_block('built-in/Product',[sys,'/','脉冲发生器/Product'])
set_param([sys,'/','脉冲发生器/Product'],...
		'hide name',0,...
		'position',[455,105,480,125])

add_block('built-in/Gain',[sys,'/','脉冲发生器/Gain'])
set_param([sys,'/','脉冲发生器/Gain'],...
		'hide name',0,...
		'Gain','ht',...
		'position',[510,102,535,128])

add_block('built-in/Outport',[sys,'/','脉冲发生器/out_1'])
set_param([sys,'/','脉冲发生器/out_1'],...
		'hide name',0,...
		'position',[560,105,580,125])
add_line([sys,'/','脉冲发生器'],[155,130;245,130;245,55;280,55])
add_line([sys,'/','脉冲发生器'],[160,45;280,45])
add_line([sys,'/','脉冲发生器'],[50,40;70,40;70,125;125,125])
add_line([sys,'/','脉冲发生器'],[135,175;100,175;100,135;125,135])
add_line([sys,'/','脉冲发生器'],[155,130;210,130;210,175;195,175])
add_line([sys,'/','脉冲发生器'],[50,40;130,40])
add_line([sys,'/','脉冲发生器'],[160,45;230,45;230,85;200,85])
add_line([sys,'/','脉冲发生器'],[140,85;105,85;105,50;130,50])
add_line([sys,'/','脉冲发生器'],[320,110;365,110])
add_line([sys,'/','脉冲发生器'],[405,120;450,120])
add_line([sys,'/','脉冲发生器'],[485,115;505,115])
add_line([sys,'/','脉冲发生器'],[540,115;555,115])
add_line([sys,'/','脉冲发生器'],[325,160;345,160;345,125;365,125])
add_line([sys,'/','脉冲发生器'],[320,50;350,50])
add_line([sys,'/','脉冲发生器'],[390,50;430,50;430,110;450,110])
set_param([sys,'/','脉冲发生器'],...
		'Mask Display','plot(0,0,100,100,[90,75,75,60,60,35,35,20,20,10],[20,20,80,80,20,20,80,80,20,20])',...
		'Mask Type','Pulse Generator')
set_param([sys,'/','脉冲发生器'],...
		'Mask Dialogue','Pulse Generator.|Pulse period (secs):|Pulse width:|Pulse height:|Pulse start time:')
set_param([sys,'/','脉冲发生器'],...
		'Mask Translate','Ts=@1; du=@2; ht=@3; stt=@4; ini=ones(length(ht),1); st1=rem(stt,Ts); st2=rem(stt+du,Ts);if(Ts<=1.2*du),ini=zeros(length(ht),1);end;')
set_param([sys,'/','脉冲发生器'],...
		'Mask Help','Pulse generator which ensures pulse\ntransitions are hit. Provides a vector of pulses when the height is entered as a vector.\nUnmask to see how it works.',...
		'Mask Entries','1\/.5\/1\/0.5\/')


%     Finished composite block '脉冲发生器'.

set_param([sys,'/','脉冲发生器'],...
		'Font Name','宋体',...
		'Font Size',12,...
		'position',[55,37,90,73])

add_block('built-in/Scope',[sys,'/','输入信号'])
set_param([sys,'/','输入信号'],...
		'Font Name','宋体',...
		'Font Size',12,...
		'Vgain','2.000000',...
		'Hgain','2.000000',...
		'Vmax','4.000000',...
		'Hmax','4.000000',...
		'Window',[261,40,627,228])
open_system([sys,'/','输入信号'])
set_param([sys,'/','输入信号'],...
		'position',[485,70,515,100])


%     Subsystem  '频谱分析仪'.

new_system([sys,'/','频谱分析仪'])
set_param([sys,'/','频谱分析仪'],'Location',[0,0,371,185])

add_block('built-in/Mux',[sys,'/','频谱分析仪/Mux'])
set_param([sys,'/','频谱分析仪/Mux'],...
		'inputs','2',...
		'position',[145,71,175,104])

add_block('built-in/Inport',[sys,'/','频谱分析仪/system output'])
set_param([sys,'/','频谱分析仪/system output'],...
		'Port','2',...
		'position',[55,110,75,130])

add_block('built-in/S-Function',[sys,'/',['频谱分析仪/S-function block',13,'which calls M-file']])
set_param([sys,'/',['频谱分析仪/S-function block',13,'which calls M-file']],...
		'function name','sfuntf',...
		'parameters','fftpts,npts,HowOften,offset,ts,0',...
		'position',[250,72,295,108])

add_block('built-in/Inport',[sys,'/','频谱分析仪/system input'])
set_param([sys,'/','频谱分析仪/system input'],...
		'position',[55,30,75,50])
add_line([sys,'/','频谱分析仪'],[80,120;110,120;110,95;140,95])
add_line([sys,'/','频谱分析仪'],[80,40;110,40;110,80;140,80])
add_line([sys,'/','频谱分析仪'],[180,90;245,90])
set_param([sys,'/','频谱分析仪'],...
		'Mask Display','plot(0,0,100,100,[11,93,93,11,11],[90,90,40,40,90],[90,80,72,64,55,45,41,36,20],[50,50,52,59,67,75,78,80,80])',...
		'Mask Type','Spectrum analyzer.')
set_param([sys,'/','频谱分析仪'],...
		'Mask Dialogue','Spectrum analyser using graph window.\nHook input 1 to system input.\nHook input 2 to system output.|Length of buffer:|Number of points for fft:|Plot after how many points:|Sample time:')
set_param([sys,'/','频谱分析仪'],...
		'Mask Translate','npts=@1; fftpts=@2; HowOften=@3; ts=@4(1); if length(@4) > 1, offset = @4(2), else, offset = 0; end')
set_param([sys,'/','频谱分析仪'],...
		'Mask Help','Hook the system''s input to the first port of this block and the system''s output to second port. Results are displayed as the frequency response of this system. Use signals with high harmonic content for best results. ')
set_param([sys,'/','频谱分析仪'],...
		'Mask Entries','512\/512\/100\/0.005\/')


%     Finished composite block '频谱分析仪'.

set_param([sys,'/','频谱分析仪'],...
		'Font Name','宋体',...
		'Font Size',12,...
		'Drop Shadow',4,...
		'position',[485,155,515,195])

add_block('built-in/Transfer Fcn',[sys,'/','二阶RLC系统'])
set_param([sys,'/','二阶RLC系统'],...
		'Font Name','宋体',...
		'Font Size',12,...
		'Drop Shadow',4,...
		'Denominator','[L*C R*C 1]')
set_param([sys,'/','二阶RLC系统'],...
		'Mask Display','plot([3 5 5 5],[2 2 1.5 2.5],[5 9],[2.5 2.5],[5 9],[1.5 1.5],[9 9],[2.5 1.5],[9 11],[2 2],[11:1/7:12],[2 2.5 2.707 2.866 2.866 2.707 2.5 2],[12:1/7:13],[2 2.5 2.707 2.866 2.866 2.707 2.5 2],[13:1/7:14],[2 2.5 2.707 2.866 2.866 2.707 2.5 2],[14:1/7:15],[2 2.5 2.707 2.866 2.866 2.707 2.5 2],[15 21],[2 2],[18 18 16 20],[2 0 0 0],[16 20],[-1 -1],[18 18 17 19],[-1 -3 -3 -3]);')
set_param([sys,'/','二阶RLC系统'],...
		'Mask Type',' 单元7',...
		'Mask Dialogue',' 单元7|电阻值（欧）：|电感值（亨）：|电容值（法）：',...
		'Mask Translate','R=@1;L=@2;C=@3;',...
		'Mask Entries','10\/1\/.0001\/')
set_param([sys,'/','二阶RLC系统'],...
		'position',[265,160,385,210])

add_block('built-in/Scope',[sys,'/','输出信号'])
set_param([sys,'/','输出信号'],...
		'Font Name','宋体',...
		'Font Size',12,...
		'Vgain','3.000000',...
		'Hgain','2.000000',...
		'Vmax','6.000000',...
		'Hmax','4.000000',...
		'Window',[264,271,626,430])
open_system([sys,'/','输出信号'])
set_param([sys,'/','输出信号'],...
		'position',[490,227,520,263])
add_line(sys,[390,185;480,185])
add_line(sys,[420,185;420,245;485,245])
add_line(sys,[95,55;135,55;135,70;165,70])
add_line(sys,[95,125;125,125;125,95;165,95])
add_line(sys,[205,85;480,85])
add_line(sys,[230,85;230,185;260,185])
add_line(sys,[415,85;415,165;480,165])

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