test_pm2.m

数字通信第四版原书的例程

function [ret,x0,str,ts,xts]=test_pm2(t,x,u,flag);
%TEST_PM2	is the M-file description of the SIMULINK system named TEST_PM2.
%	The block-diagram can be displayed by typing: TEST_PM2.
%
%	SYS=TEST_PM2(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 TEST_PM2 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 TEST_PM2 with a FLAG of zero:
%	[SIZES]=TEST_PM2([],[],[],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',[441,472,963,679])
     open_system(sys)
end;
set_param(sys,'algorithm',     'RK-45')
set_param(sys,'Start time',    '0.0')
set_param(sys,'Stop time',     '999999')
set_param(sys,'Min step size', '0.01')
set_param(sys,'Max step size', '0.01')
set_param(sys,'Relative error','1e-3')
set_param(sys,'Return vars',   '')
set_param(sys,'Load callback','ts=.01;[num,den]=butter(2,100/pi/2*ts);');

add_block('built-in/Mux',[sys,'/','Mux'])
set_param([sys,'/','Mux'],...
		'hide name',0,...
		'inputs','3',...
		'position',[385,35,420,85])


%     Subsystem  'Graph'.

new_system([sys,'/','Graph'])
set_param([sys,'/','Graph'],'Location',[0,59,274,252])

add_block('built-in/S-Function',[sys,'/',['Graph/S-function',13,'M-file which plots',13,'lines',13,'']])
set_param([sys,'/',['Graph/S-function',13,'M-file which plots',13,'lines',13,'']],...
		'function name','sfuny',...
		'parameters','ax, color,dt',...
		'position',[130,55,180,75])

add_block('built-in/Inport',[sys,'/','Graph/x'])
set_param([sys,'/','Graph/x'],...
		'position',[65,55,85,75])
add_line([sys,'/','Graph'],[90,65;125,65])
set_param([sys,'/','Graph'],...
		'Mask Display','plot(0,0,100,100,[90,10,10,10,90,90,10],[65,65,90,40,40,90,90],[90,78,69,54,40,31,25,10],[77,60,48,46,56,75,81,84])',...
		'Mask Type','Graph scope.')
set_param([sys,'/','Graph'],...
		'Mask Dialogue','Graph scope using MATLAB graph window.\nEnter plotting ranges and line type.|Time range:|y-min:|y-max:|Line type (rgbw-:*). Seperate each plot by ''/'':|Sample time:')
set_param([sys,'/','Graph'],...
		'Mask Translate','color = @4; ax = [0, @1, @2, @3]; dt = @5;')
set_param([sys,'/','Graph'],...
		'Mask Help','This block plots to the MATLAB graph window and can be used as an improved version of the Scope block. Look at the m-file sfuny.m to see how it works. This block can take scalar or vector input signal.')
set_param([sys,'/','Graph'],...
		'Mask Entries','4\/-1.5\/1.5\/''y-/g--/r-/m:/w-/r:/b+''\/ts\/')


%     Finished composite block 'Graph'.

set_param([sys,'/','Graph'],...
		'position',[450,41,480,79])


%     Subsystem  ['PDM',13,'passband'].

new_system([sys,'/',['PDM',13,'passband']])
set_param([sys,'/',['PDM',13,'passband']],'Location',[232,541,802,708])

add_block('built-in/Gain',[sys,'/',['PDM',13,'passband/Sensitivity1']])
set_param([sys,'/',['PDM',13,'passband/Sensitivity1']],...
		'Gain','2',...
		'position',[70,25,110,55])

add_block('built-in/Filter',[sys,'/',['PDM',13,'passband/Filter']])
set_param([sys,'/',['PDM',13,'passband/Filter']],...
		'Numerator','num',...
		'Denominator','den',...
		'Sample time','ts',...
		'position',[235,26,290,64])

add_block('built-in/Product',[sys,'/',['PDM',13,'passband/Multiplier',13,'phase detector']])
set_param([sys,'/',['PDM',13,'passband/Multiplier',13,'phase detector']],...
		'position',[155,35,180,55])


%     Subsystem  ['PDM',13,'passband/Discrete-time',13,'VCO'].

new_system([sys,'/',['PDM',13,'passband/Discrete-time',13,'VCO']])
set_param([sys,'/',['PDM',13,'passband/Discrete-time',13,'VCO']],'Location',[4,58,511,205])

add_block('built-in/Sum',[sys,'/',['PDM',13,'passband/Discrete-time',13,'VCO/Sum']])
set_param([sys,'/',['PDM',13,'passband/Discrete-time',13,'VCO/Sum']],...
		'position',[155,30,175,50])


%     Subsystem  ['PDM',13,'passband/Discrete-time',13,'VCO/Dis module',13,'integrator'].

new_system([sys,'/',['PDM',13,'passband/Discrete-time',13,'VCO/Dis module',13,'integrator']])
set_param([sys,'/',['PDM',13,'passband/Discrete-time',13,'VCO/Dis module',13,'integrator']],'Location',[402,373,908,481])

add_block('built-in/Gain',[sys,'/',['PDM',13,'passband/Discrete-time',13,'VCO/Dis module',13,'integrator/Sensitivity']])
set_param([sys,'/',['PDM',13,'passband/Discrete-time',13,'VCO/Dis module',13,'integrator/Sensitivity']],...
		'Gain','ts(1)',...
		'position',[80,16,135,54])

add_block('built-in/Unit Delay',[sys,'/',['PDM',13,'passband/Discrete-time',13,'VCO/Dis module',13,'integrator/Unit Delay']])
set_param([sys,'/',['PDM',13,'passband/Discrete-time',13,'VCO/Dis module',13,'integrator/Unit Delay']],...
		'Sample time','ts',...
		'x0','init',...
		'position',[345,30,395,50])

add_block('built-in/Inport',[sys,'/',['PDM',13,'passband/Discrete-time',13,'VCO/Dis module',13,'integrator/in_1']])
set_param([sys,'/',['PDM',13,'passband/Discrete-time',13,'VCO/Dis module',13,'integrator/in_1']],...
		'position',[15,25,35,45])

add_block('built-in/Fcn',[sys,'/',['PDM',13,'passband/Discrete-time',13,'VCO/Dis module',13,'integrator/module']])
set_param([sys,'/',['PDM',13,'passband/Discrete-time',13,'VCO/Dis module',13,'integrator/module']],...
		'Expr','rem(u[1],modu)',...
		'position',[235,29,325,51])

add_block('built-in/Sum',[sys,'/',['PDM',13,'passband/Discrete-time',13,'VCO/Dis module',13,'integrator/Sum']])
set_param([sys,'/',['PDM',13,'passband/Discrete-time',13,'VCO/Dis module',13,'integrator/Sum']],...
		'position',[195,30,215,50])

add_block('built-in/Outport',[sys,'/',['PDM',13,'passband/Discrete-time',13,'VCO/Dis module',13,'integrator/out_1']])
set_param([sys,'/',['PDM',13,'passband/Discrete-time',13,'VCO/Dis module',13,'integrator/out_1']],...
		'position',[430,30,450,50])
add_line([sys,'/',['PDM',13,'passband/Discrete-time',13,'VCO/Dis module',13,'integrator']],[400,40;425,40])
add_line([sys,'/',['PDM',13,'passband/Discrete-time',13,'VCO/Dis module',13,'integrator']],[410,40;410,90;175,90;175,45;190,45])
add_line([sys,'/',['PDM',13,'passband/Discrete-time',13,'VCO/Dis module',13,'integrator']],[330,40;340,40])
add_line([sys,'/',['PDM',13,'passband/Discrete-time',13,'VCO/Dis module',13,'integrator']],[140,35;190,35])
add_line([sys,'/',['PDM',13,'passband/Discrete-time',13,'VCO/Dis module',13,'integrator']],[40,35;75,35])
add_line([sys,'/',['PDM',13,'passband/Discrete-time',13,'VCO/Dis module',13,'integrator']],[220,40;230,40])
set_param([sys,'/',['PDM',13,'passband/Discrete-time',13,'VCO/Dis module',13,'integrator']],...
		'Mask Display','discrete\nmod-int',...
		'Mask Type','Module Integrator')
set_param([sys,'/',['PDM',13,'passband/Discrete-time',13,'VCO/Dis module',13,'integrator']],...
		'Mask Dialogue','Module the given number when state exceed limit|Module bound:|Initial value:|Sample time:')
set_param([sys,'/',['PDM',13,'passband/Discrete-time',13,'VCO/Dis module',13,'integrator']],...
		'Mask Translate','init=@2; modu=@1;ts=@3;')
set_param([sys,'/',['PDM',13,'passband/Discrete-time',13,'VCO/Dis module',13,'integrator']],...
		'Mask Help','The absolute value of this integrator will not exceed the specified module bound. The state value is set to be zero when the module bound is reached. This block can only be used for scale value calculation.')
set_param([sys,'/',['PDM',13,'passband/Discrete-time',13,'VCO/Dis module',13,'integrator']],...
		'Mask Entries','pi*100\/0\/ts\/')


%     Finished composite block ['PDM',13,'passband/Discrete-time',13,'VCO/Dis module',13,'integrator'].

set_param([sys,'/',['PDM',13,'passband/Discrete-time',13,'VCO/Dis module',13,'integrator']],...
		'position',[200,21,260,59])

add_block('built-in/Gain',[sys,'/',['PDM',13,'passband/Discrete-time',13,'VCO/Sensitivity']])
set_param([sys,'/',['PDM',13,'passband/Discrete-time',13,'VCO/Sensitivity']],...
		'Gain','Kc*pi2',...
		'position',[60,14,135,56])

add_block('built-in/Inport',[sys,'/',['PDM',13,'passband/Discrete-time',13,'VCO/in_1']])
set_param([sys,'/',['PDM',13,'passband/Discrete-time',13,'VCO/in_1']],...
		'position',[15,25,35,45])

add_block('built-in/Fcn',[sys,'/',['PDM',13,'passband/Discrete-time',13,'VCO/sin']])
set_param([sys,'/',['PDM',13,'passband/Discrete-time',13,'VCO/sin']],...
		'Expr','Ac*cos(u[1]+Ph)',...
		'position',[285,25,410,55])

add_block('built-in/Constant',[sys,'/',['PDM',13,'passband/Discrete-time',13,'VCO/Carrier',13,'frequency']])
set_param([sys,'/',['PDM',13,'passband/Discrete-time',13,'VCO/Carrier',13,'frequency']],...
		'Value','Fc*pi2',...
		'position',[60,85,115,105])

add_block('built-in/Outport',[sys,'/',['PDM',13,'passband/Discrete-time',13,'VCO/out_1']])
set_param([sys,'/',['PDM',13,'passband/Discrete-time',13,'VCO/out_1']],...
		'position',[425,30,445,50])
add_line([sys,'/',['PDM',13,'passband/Discrete-time',13,'VCO']],[140,35;150,35])
add_line([sys,'/',['PDM',13,'passband/Discrete-time',13,'VCO']],[180,40;195,40])
add_line([sys,'/',['PDM',13,'passband/Discrete-time',13,'VCO']],[265,40;280,40])
add_line([sys,'/',['PDM',13,'passband/Discrete-time',13,'VCO']],[120,95;125,95;125,45;150,45])
add_line([sys,'/',['PDM',13,'passband/Discrete-time',13,'VCO']],[40,35;55,35])
add_line([sys,'/',['PDM',13,'passband/Discrete-time',13,'VCO']],[415,40;420,40])
set_param([sys,'/',['PDM',13,'passband/Discrete-time',13,'VCO']],...
		'Mask Display','Discrete\nVCO',...
		'Mask Type','VCO')
set_param([sys,'/',['PDM',13,'passband/Discrete-time',13,'VCO']],...
		'Mask Dialogue','Voltage-Controlled Oscilator:|Amplitude constant:|Carier frequency (Hz):|Sensitivity constant:|Initial phase (rad):|Sample time:')
set_param([sys,'/',['PDM',13,'passband/Discrete-time',13,'VCO']],...
		'Mask Translate','Ac=@1;Fc=@2;Kc=@3;Ph=@4;pi2=2*pi;ts=@5;')
set_param([sys,'/',['PDM',13,'passband/Discrete-time',13,'VCO']],...
		'Mask Help','The VCO block cause the frequency of the sinusoidal carrier to depend on the input signal voltage, resulting in frequency of the output change depending on the amplitude of the input signal.')
set_param([sys,'/',['PDM',13,'passband/Discrete-time',13,'VCO']],...
		'Mask Entries','1\/Fc\/1\/Ph\/ts\/')


%     Finished composite block ['PDM',13,'passband/Discrete-time',13,'VCO'].

set_param([sys,'/',['PDM',13,'passband/Discrete-time',13,'VCO']],...
		'orientation',2,...
		'position',[145,90,205,130])

add_block('built-in/Gain',[sys,'/',['PDM',13,'passband/Sensitivity']])
set_param([sys,'/',['PDM',13,'passband/Sensitivity']],...
		'Gain','ts*2*pi',...
		'position',[355,30,395,60])

add_block('built-in/Sum',[sys,'/',['PDM',13,'passband/Sum']])
set_param([sys,'/',['PDM',13,'passband/Sum']],...
		'position',[435,40,455,60])

add_block('built-in/Unit Delay',[sys,'/',['PDM',13,'passband/Unit Delay1']])
set_param([sys,'/',['PDM',13,'passband/Unit Delay1']],...
		'orientation',2,...
		'Sample time','ts',...