Difference between revisions of "Applets:Periodendauer periodischer Signale"
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+ | {{LntExplicitLoadMathjax}} | ||
+ | |||
<p> | <p> | ||
{{BlaueBox|TEXT= | {{BlaueBox|TEXT= | ||
− | + | $x(t) = A_1\cdot cos\Big(2\pi f_1\cdot t- \frac{2\pi}{360}\cdot \phi_1\Big)+A_2\cdot cos\Big(2\pi f_2\cdot t- \frac{2\pi}{360}\cdot \phi_2\Big)$ | |
− | |||
}} | }} | ||
</p> | </p> | ||
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<html> | <html> | ||
<head> | <head> | ||
− | + | <meta charset="utf-8" /> | |
− | + | <script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/jsxgraph/0.99.6/jsxgraphcore.js"></script> | |
− | + | <!-- <script type="text/javascript" src="https://en.lntwww.de/MathJax/unpacked/MathJax.js?config=TeX-AMS-MML_HTMLorMML-full,local/mwMathJaxConfig"></script> --> | |
− | + | <style> | |
− | |||
− | <style> | ||
.button { | .button { | ||
background-color: black; | background-color: black; | ||
Line 30: | Line 29: | ||
} | } | ||
− | + | table { | |
+ | border-collapse: separate; | ||
+ | border-spacing: 20px 0; | ||
+ | } | ||
+ | </style> | ||
</head> | </head> | ||
− | <body | + | <body> |
− | <!-- Resetbutton, Checkbox und | + | <form id="jxgForm"> |
− | <p> | + | <!-- Resetbutton, Checkbox, Regler und Plots --> |
− | + | <p> | |
− | + | <input type="checkbox" id="gridbox" onclick="showgrid();" checked> <label for="gridbox">Gitterlinien Zeigen</label> | |
− | </p> | + | <button class="button" onclick="rst()">Reset</button> |
− | <div id=" | + | </p> |
− | <div id=" | + | <div id="cnfBoxHtml" class="jxgbox" style="width:600px; height:100px; float:top; margin:-10px 20px 100px 0px;"></div> |
− | < | + | <div id="pltBoxHtml" class="jxgbox" style="width:600px; height:600px; border:1px solid black; margin:-10px 20px 100px 0px;"></div> |
+ | </form> | ||
+ | |||
+ | <!-- Ausgabefelder --> | ||
+ | <table> | ||
+ | <tr> | ||
+ | <td>$x(t)$= <span id="x(t)"></span> </td> | ||
+ | <td>$x(t+ T_0)$=<span id="x(t+T_0)"></span> </td> | ||
+ | <td>$x(t+2T_0)$=<span id="x(t+2T_0)"></span></td> | ||
+ | </tr> | ||
+ | <tr> | ||
+ | <td>$x_{\text{max}}$=<span id="x_max"></span></td> | ||
+ | <td>$T_0$= <span id="T_0"></span> </td> | ||
+ | </tr> | ||
+ | </table> | ||
+ | |||
<script type="text/javascript"> | <script type="text/javascript"> | ||
− | + | // Grundeinstellungen der beiden Applets | |
− | //Grundeinstellungen der beiden Applets | + | JXG.Options.text.useMathJax = true; |
− | JXG.Options.text.useMathJax = true; | + | cnfBox = JXG.JSXGraph.initBoard('cnfBoxHtml', { |
− | + | showCopyright: false, showNavigation: false, axis: false, | |
− | cnfBox = JXG.JSXGraph.initBoard('cnfBoxHtml', {showCopyright:false, showNavigation:false, axis:false, grid:false, zoom:{enabled:false}, pan:{enabled:false}, boundingbox: [-1, 2.2, 12.4, -2.2]}); | + | grid: false, zoom: { enabled: false }, pan: { enabled: false }, |
− | + | boundingbox: [-1, 2.2, 12.4, -2.2] | |
− | cnfBox.addChild( | + | }); |
− | + | pltBox = JXG.JSXGraph.initBoard('pltBoxHtml', { | |
+ | showCopyright: false, axis: false, | ||
+ | zoom: { factorX: 1.1, factorY: 1.1, wheel: true, needshift: true, eps: 0.1 }, | ||
+ | grid: false, boundingbox: [-0.5, 2.2, 12.4, -2.2] | ||
+ | }); | ||
+ | cnfBox.addChild(pltBox); | ||
− | //Einstellungen der Achsen | + | // Einstellungen der Achsen |
− | xaxis = | + | xaxis = pltBox.create('axis', [[0, 0], [1, 0]], { |
− | yaxis = | + | name: '$\\dfrac{t}{T}$', |
+ | withLabel: true, label: { position: 'rt', offset: [-25, -10] } | ||
+ | }); | ||
+ | yaxis = pltBox.create('axis', [[0, 0], [0, 1]], { | ||
+ | name: '$x(t)$', | ||
+ | withLabel: true, label: { position: 'rt', offset: [10, -5] } | ||
+ | }); | ||
− | // | + | // Erstellen der Schieberegler |
− | + | sldA1 = cnfBox.create('slider', [ [-0.7, 1.5], [3, 1.5], [0, 0.5, 1] ], { | |
− | + | suffixlabel: '$A_1=$', | |
− | + | unitLabel: 'V', snapWidth: 0.01 | |
− | + | }), | |
− | + | sldF1 = cnfBox.create('slider', [ [-0.7, 0.5], [3, 0.5], [0, 1, 10] ], { | |
− | + | suffixlabel: '$f_1=$', | |
− | + | unitLabel: 'kHz', snapWidth: 0.1 | |
+ | }), | ||
+ | sldPHI1 = cnfBox.create('slider', [ [-0.7, -0.5], [3, -0.5], [-180, 0, 180] ], { | ||
+ | suffixlabel: '$\\phi_1=$', | ||
+ | unitLabel: 'Grad', snapWidth: 5 | ||
+ | }), | ||
+ | sldA2 = cnfBox.create('slider', [ [6, 1.5], [9.7, 1.5], [0, 0.5, 1] ], { | ||
+ | suffixlabel: '$A_2=$', | ||
+ | unitLabel: 'V', snapWidth: 0.01 | ||
+ | }), | ||
+ | sldF2 = cnfBox.create('slider', [ [6, 0.5], [9.7, 0.5], [0, 2, 10] ], { | ||
+ | suffixlabel: '$f_2=$', | ||
+ | unitLabel: 'kHz', snapWidth: 0.1 | ||
+ | }), | ||
+ | sldPHI2 = cnfBox.create('slider', [ [6, -0.5], [9.7, -0.5], [-180, 90, 180] ], { | ||
+ | suffixlabel: '$\\phi_2=$', | ||
+ | unitLabel: 'Grad', snapWidth: 5 | ||
+ | }), | ||
+ | sldT = cnfBox.create('slider', [ [-0.7, -1.5], [3, -1.5], [0, 0, 10] ], { | ||
+ | suffixlabel: '$t=$', | ||
+ | unitLabel: 's', snapWidth: 0.2 | ||
+ | }), | ||
− | //Definition der | + | // Definition der Funktion |
− | + | signaldarstellung = pltBox.create('functiongraph', [function(x) { | |
− | + | return (sldA1.Value() * Math.cos(2 * Math.PI * sldF1.Value() * x - 2 * Math.PI * sldPHI1.Value() / 360) + sldA2.Value() * Math.cos(2 * Math.PI * sldF2.Value() * x - 2 * Math.PI * sldPHI2.Value() / 360)) | |
− | + | }], { | |
− | + | strokeColor: "red" | |
− | + | }); | |
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | + | // Definition des Punktes p_T0, des Hilfspunktes p_T0h und der Geraden l_T0 für Periodendauer T_0 | |
− | + | p_T0 = pltBox.create('point', [ | |
− | + | function() { | |
− | + | return (Math.round(getT0() * 100) / 100); | |
− | + | }, | |
− | + | function() { | |
− | + | return sldA1.Value() * Math.cos(2 * Math.PI * sldF1.Value() * (Math.round(getT0() * 100) / 100) - 2 * Math.PI * sldPHI1.Value() / 360) + | |
− | { | + | sldA2.Value() * Math.cos(2 * Math.PI * sldF2.Value() * (Math.round(getT0() * 100) / 100) - 2 * Math.PI * sldPHI2.Value() / 360); |
− | + | }], | |
− | + | { color: "blue", fixed: true, label: false, size: 1, name: '' } | |
− | + | ); | |
− | + | p_T0h = pltBox.create('point', | |
+ | [function() { return (Math.round(getT0() * 100) / 100); }, 2], | ||
+ | { visible: false, color: "blue", fixed: true, label: false, size: 1, name: '' } | ||
+ | ); | ||
+ | l_T0 = pltBox.create('line', [p_T0, p_T0h]) | ||
− | // | + | // Bestimmung des Wertes T_0 mit der Funktion von Siebenwirth |
− | + | setInterval(function() { | |
− | + | document.getElementById("T_0").innerHTML = Math.round(getT0() * 100) / 100; | |
− | } | + | }, 50); |
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | } | + | |
− | + | function isInt(n) { | |
+ | return n % 1 === 0; | ||
+ | } | ||
+ | |||
function getT0() { | function getT0() { | ||
− | |||
var A, B, C, Q; | var A, B, C, Q; | ||
− | if ( | + | if (sldF1.Value() < sldF2.Value()) { |
− | A = | + | A = sldF1.Value(); |
− | B = | + | B = sldF2.Value(); |
} else { | } else { | ||
− | B = | + | B = sldF1.Value(); |
− | A = | + | A = sldF2.Value(); |
} | } | ||
− | + | // console.log('Berechne T0 mit A=' + A, 'B=' + B); | |
− | console.log('Berechne T0 mit A=' + A, 'B=' + B); | ||
− | |||
for (var x = 1; x <= 100; x++) { | for (var x = 1; x <= 100; x++) { | ||
C = A / x; | C = A / x; | ||
Q = B / C; | Q = B / C; | ||
− | console.log(x + '. Durchgang: C = ' + C, 'Q = ' + Q); | + | // console.log(x + '. Durchgang: C = ' + C, 'Q = ' + Q); |
if (isInt(Q)) { | if (isInt(Q)) { | ||
− | console.log('Q ist eine | + | // console.log('Q ist eine Ganzzahl!!! T0 ist damit ', 1 / C); |
return 1 / C; | return 1 / C; | ||
} | } | ||
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return 10; | return 10; | ||
} | } | ||
− | if ((1/C) > 10) | + | if ((1 / C) > 10) |
return 10 | return 10 | ||
} | } | ||
} | } | ||
− | |||
− | |||
− | |||
− | //Definition der Funktion zum An- und Ausschalten des Koordinatengitters | + | |
− | function showgrid() { | + | // Ausgabe des Wertes x(t) |
− | + | setInterval(function() { | |
− | + | document.getElementById("x(t)").innerHTML = Math.round((sldA1.Value() * Math.cos(2 * Math.PI * sldF1.Value() * sldT.Value() - 2 * Math.PI * sldPHI1.Value() / 360) + sldA2.Value() * Math.cos(2 * Math.PI * sldF2.Value() * sldT.Value() - 2 * Math.PI * sldPHI2.Value() / | |
− | + | 360)) * 1000) / 1000; | |
− | + | }, 50); | |
− | + | ||
− | + | // Ausgabe des Wertes x(t+T_0) | |
− | + | setInterval(function() { | |
− | + | document.getElementById("x(t+T_0)").innerHTML = Math.round((sldA1.Value() * Math.cos(2 * Math.PI * sldF1.Value() * (sldT.Value() + Math.round(getT0() * 1000) / 1000) - sldPHI1.Value()) + sldA2.Value() * Math.cos(2 * Math.PI * sldF2.Value() * (sldT.Value() + | |
− | }; | + | Math.round(getT0() * 1000) / 1000) - sldPHI2.Value())) * 1000) / 1000; |
+ | }, 50); | ||
+ | |||
+ | // Ausgabe des Wertes x(t+2T_0) | ||
+ | setInterval(function() { | ||
+ | document.getElementById("x(t+2T_0)").innerHTML = Math.round((sldA1.Value() * Math.cos(2 * Math.PI * sldF1.Value() * (sldT.Value() + 2 * Math.round(getT0() * 1000) / 1000) - sldPHI1.Value()) + sldA2.Value() * Math.cos(2 * Math.PI * sldF2.Value() * (sldT.Value() + | ||
+ | 2 * Math.round(getT0() * 1000) / 1000) - sldPHI2.Value())) * 1000) / 1000; | ||
+ | }, 50); | ||
+ | |||
+ | // Ausgabe des Wertes x_max | ||
+ | setInterval(function() { | ||
+ | var x = new Array(50000); | ||
+ | for (var i = 0; i < 50001; i++) { | ||
+ | x[i] = Math.round((sldA1.Value() * Math.cos(2 * Math.PI * sldF1.Value() * (i / 1000) - 2 * Math.PI * sldPHI1.Value() / 360) + sldA2.Value() * Math.cos(2 * Math.PI * sldF2.Value() * (i / 1000) - 2 * Math.PI * sldPHI2.Value() / 360)) * 1000) / 1000; | ||
+ | } | ||
+ | document.getElementById("x_max").innerHTML = Math.max.apply(Math, x); | ||
+ | }, 50); | ||
+ | |||
+ | |||
+ | |||
+ | // Definition der Funktion zum An- und Ausschalten des Koordinatengitters | ||
+ | function showgrid() { | ||
+ | if (gridbox.checked) { | ||
+ | xaxis = pltBox.create('axis', [ [0, 0], [1, 0] ], {}); | ||
+ | yaxis = pltBox.create('axis', [ [0, 0], [0, 1] ], {}); | ||
+ | } else { | ||
+ | xaxis.removeTicks(xaxis.defaultTicks); | ||
+ | yaxis.removeTicks(yaxis.defaultTicks); | ||
+ | } | ||
+ | pltBox.fullUpdate(); | ||
+ | }; | ||
+ | |||
+ | // Definition des Reset-Buttons | ||
+ | function rst() { | ||
+ | document.getElementById("jxgForm").reset(); | ||
+ | }; | ||
</script> | </script> | ||
</body> | </body> | ||
</html> | </html> | ||
+ | |||
+ | {{Display}} |
Revision as of 08:27, 18 September 2017
$x(t) = A_1\cdot cos\Big(2\pi f_1\cdot t- \frac{2\pi}{360}\cdot \phi_1\Big)+A_2\cdot cos\Big(2\pi f_2\cdot t- \frac{2\pi}{360}\cdot \phi_2\Big)$
$x(t)$= | $x(t+ T_0)$= | $x(t+2T_0)$= |
$x_{\text{max}}$= | $T_0$= |