Applets:Periodendauer periodischer Signale: Unterschied zwischen den Versionen
Aus LNTwww
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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://www.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; | ||
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} | } | ||
− | + | 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; | ||
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}, 50); | }, 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}} |
Version vom 18. September 2017, 08:50 Uhr
$x(t) = A_1\cdot cos\Big(2\pi f_1\cdot t- \frac{2\pi}{360}\cdot \phi_1\Big)+A_2\cdot cos\Big(2\pi f_2\cdot t- \frac{2\pi}{360}\cdot \phi_2\Big)$
$x(t)$= | $x(t+ T_0)$= | $x(t+2T_0)$= |
$x_{\text{max}}$= | $T_0$= |