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annotate m-toolbox/m/mdcs/mdc1/models/ltpda_mdc1_dynamics.m @ 16:91f21a0aab35 database-connection-manager

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Update utils.jquery * * * Update utils.jmysql.getsinfo
author Daniele Nicolodi <nicolodi@science.unitn.it>
date Mon, 05 Dec 2011 16:20:06 +0100
parents f0afece42f48
children
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Daniele Nicolodi <nicolodi@science.unitn.it>
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1 % LTPDA_MDC1_DYNAMICS returns a frequency-domain model of the dynamics for MDC1.
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2 %
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3 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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4 %
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5 % DESCRIPTION: LTPDA_MDC1_DYNAMICS returns a frequency-domain model of the dynamics
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6 % for MDC1.
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7 %
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8 % CALL: b = ltpda_mdc1_dynamics(pl)
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9 %
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10 % PARAMETERS:
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11 %
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12 % 'Omega2' - the square of the stiffness term for the dynamical response
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13 % [default: 1.3e-6]
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14 % 'f' - a vector of frequencies [default: 1]
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15 % or
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16 % 'f1' - start frequency [default: 1e-6]
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17 % 'f2' - stop frequency [default: 5]
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18 % 'nf' - number of frequency points [default: 1000]
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19 % 'scale' - frequency spacing, 'lin' or 'log' [default: 'log']
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20 %
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21 % VERSION: $Id: ltpda_mdc1_dynamics.m,v 1.4 2008/08/12 12:33:25 anneke Exp $
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22 %
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23 % The following call returns a parameter list object that contains the
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24 % default parameter values:
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25 %
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26 % >> pl = ltpda_mdc1_dynamics(ao, 'Params')
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27 %
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28 % The following call returns a string that contains the routine CVS version:
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29 %
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30 % >> version = ltpda_mdc1_dynamics(ao,'Version')
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31 %
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32 % The following call returns a string that contains the routine category:
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33 %
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34 % >> category = ltpda_mdc1_dynamics(ao,'Category')
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35 %
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36 % HISTORY: 11-04-08 M Hewitson
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37 % Creation
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38 %
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39 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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40 function varargout = ltpda_mdc1_dynamics(varargin)
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41 %%% Check if this is a call for parameters
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42 if utils.helper.isinfocall(varargin{:})
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43 varargout{1} = getInfo(varargin{3});
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44 return
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45 end
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46
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47 %%% Collect input variable names
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48 in_names = cell(size(varargin));
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49 for ii = 1:nargin,in_names{ii} = inputname(ii);end
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50
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51 pli = utils.helper.collect_objects(varargin(:), 'plist', in_names);
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52
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53 %%% Decide on a deep copy or a modify
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54 %%% REMARK: If you create a new AO (call the constructor) then
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55 %%% it is not necessay to copy the input-AOs !!!!!!!!!!!!!!!!!!!!!!!!!
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56
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57
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58 %%% Combine plists
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59 pl = combine(pli, getDefaultPlist('Range'));
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60
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61 %% Extract parameters from plist
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62
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63 f = find(pl, 'f');
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64 if isempty(f)
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65 f1 = find(pl, 'f1');
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66 f2 = find(pl, 'f2');
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67 nf = find(pl, 'nf');
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68 scale = find(pl, 'scale');
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69
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70 switch scale
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71 case 'lin'
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72 f = linspace(f1, f2, nf);
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73 case 'log'
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74 f = logspace(log10(f1), log10(f2), nf);
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75 end
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76 end
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77
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78 omega2 = find(pl, 'Omega2');
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79
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80 %% Compute response for frequencies f
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81
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82 varargout{1} = getDynamics(f, omega2);
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83 end
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84 %--------------------------------------------------------------------------
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85 % Get DF controller for each frequency
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86 function o = getDynamics(f, w2)
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87
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88 % We take abs() here and use +- omega later
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89 w1 = sqrt(abs(w2));
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90
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91 % DF dynamics
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92 pl = plist('gain',(w1*w1), 'poles', [], 'zeros', [pz(w1/2/pi) pz(-w1/2/pi)]);
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93 dfm = pzmodel(pl);
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94
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95 % Make an AO from the pzmodel
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96 o = resp(dfm, plist('f', f)) ;
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97 o.setName('s^2+\omega^2');
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98 o.addHistory(getInfo,plist('Omega2', w2),[],o.hist);
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99 end
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100
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101 function ii = getInfo(varargin)
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102 if nargin == 1 && strcmpi(varargin{1}, 'None')
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103 sets = {};
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104 pls = [];
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105 elseif nargin == 1&& ~isempty(varargin{1}) && ischar(varargin{1})
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106 sets{1} = varargin{1};
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107 pls = getDefaultPlist(sets{1});
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108 else
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109 sets = {'List', 'Range'};
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110 pls = [];
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111 for kk=1:numel(sets)
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112 pls = [pls getDefaultPlist(sets{kk})];
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113 end
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114 end
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115 % Build info object
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116 ii = minfo(mfilename, 'MDC1', '', 'Signal Processing', '$Id: ltpda_mdc1_dynamics.m,v 1.4 2008/08/12 12:33:25 anneke Exp $', sets, pls);
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117 end
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118
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119 function plo = getDefaultPlist(set)
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120 switch set
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121 case 'List'
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122 plo = plist('Omega2', 1.3e-6, 'f', [1]);
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123 case 'Range'
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124 plo = plist('Omega2', 1.3e-6, ...
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125 'f1', 1e-6,...
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126 'f2', 5,...
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127 'nf', 1000,...
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128 'scale', 'log');
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129 otherwise
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130 plo = plist();
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131 end
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132 end