Applets:Periodendauer periodischer Signale: Difference between revisions
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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; | ||
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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}} | |||
Revision as of 09:50, 18 September 2017
$x(t) = A_1\cdot cos\Big(2\pi f_1\cdot t- \frac{2\pi}{360}\cdot \phi_1\Big)+A_2\cdot cos\Big(2\pi f_2\cdot t- \frac{2\pi}{360}\cdot \phi_2\Big)$
| $x(t)$= | $x(t+ T_0)$= | $x(t+2T_0)$= |
| $x_{\text{max}}$= | $T_0$= |