Difference between revisions of "Applets:Periodendauer periodischer Signale"
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David.Jobst (talk | contribs) |
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+ | {{LntExplicitLoadMathjax}} | ||
+ | |||
+ | <p> | ||
+ | {{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> | ||
+ | |||
<html> | <html> | ||
<head> | <head> | ||
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<script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/jsxgraph/0.99.6/jsxgraphcore.js"></script> | <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> --> | <!-- <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 { | ||
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background-color: #939393; | background-color: #939393; | ||
} | } | ||
+ | |||
table { | table { | ||
border-collapse: separate; | border-collapse: separate; | ||
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− | <body | + | <body> |
− | <!-- Resetbutton, Checkbox, Regler und Plots --> | + | <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="cnfBoxHtml" class="jxgbox" style="width:600px; height:100px; float:top; margin:-10px 20px 100px 0px;"></div> | + | </p> |
− | <div id="pltBoxHtml" class="jxgbox" style="width:600px; height:600px; border:1px solid black; margin:-10px 20px 100px 0px;"></div> | + | <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 --> | <!-- Ausgabefelder --> | ||
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<script type="text/javascript"> | <script type="text/javascript"> | ||
− | + | // Grundeinstellungen der beiden Applets | |
− | + | JXG.Options.text.useMathJax = true; | |
− | + | var 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] | |
− | + | }); | |
− | + | var 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 | |
− | + | xaxis = pltBox.create('axis', [[0, 0], [1, 0]], { | |
− | + | 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 | |
− | + | a = cnfBox.create('slider', [ [-0.7, 1.5], [3, 1.5], [0, 0.5, 1] ], { | |
− | + | suffixlabel: '$A_1=$', | |
− | + | unitLabel: 'V', snapWidth: 0.01 | |
− | |||
− | |||
− | |||
}), | }), | ||
− | c = cnfBox.create('slider', [ [-0.7, -0.5], [3, -0.5], [-180, 0, 180] ], { | + | b = cnfBox.create('slider', [ [-0.7, 0.5], [3, 0.5], [0, 1, 10] ], { |
− | + | suffixlabel: '$f_1=$', | |
− | + | unitLabel: 'kHz', snapWidth: 0.1 | |
− | + | }), | |
− | + | c = cnfBox.create('slider', [ [-0.7, -0.5], [3, -0.5], [-180, 0, 180] ], { | |
− | + | suffixlabel: '$\\phi_1=$', | |
− | + | unitLabel: 'Grad', snapWidth: 5 | |
− | + | }), | |
− | + | d = cnfBox.create('slider', [ [6, 1.5], [9.7, 1.5], [0, 0.5, 1] ], { | |
− | + | suffixlabel: '$A_2=$', | |
− | + | unitLabel: 'V', snapWidth: 0.01 | |
− | + | }), | |
− | + | e = cnfBox.create('slider', [ [6, 0.5], [9.7, 0.5], [0, 2, 10] ], { | |
− | + | suffixlabel: '$f_2=$', | |
− | + | unitLabel: 'kHz', snapWidth: 0.1 | |
− | + | }), | |
− | + | g = cnfBox.create('slider', [ [6, -0.5], [9.7, -0.5], [-180, 90, 180] ], { | |
− | + | suffixlabel: '$\\phi_2=$', | |
− | + | unitLabel: 'Grad', snapWidth: 5 | |
− | + | }), | |
− | + | t = cnfBox.create('slider', [ [-0.7, -1.5], [3, -1.5], [0, 0, 10] ], { | |
− | + | suffixlabel: '$t=$', | |
− | + | unitLabel: 's', snapWidth: 0.2 | |
− | + | }), | |
− | + | ||
− | + | // Definition der Funktion | |
− | + | signaldarstellung = pltBox.create('functiongraph', [function(x) { | |
− | + | return (a.Value() * Math.cos(2 * Math.PI * b.Value() * x - 2 * Math.PI * c.Value() / 360) + d.Value() * Math.cos(2 * Math.PI * e.Value() * x - 2 * Math.PI * g.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 a.Value() * Math.cos(2 * Math.PI * b.Value() * (Math.round(getT0() * 100) / 100) - 2 * Math.PI * c.Value() / 360) + | |
− | + | d.Value() * Math.cos(2 * Math.PI * e.Value() * (Math.round(getT0() * 100) / 100) - 2 * Math.PI * g.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() { | ||
+ | var A, B, C, Q; | ||
+ | if (b.Value() < e.Value()) { | ||
+ | A = b.Value(); | ||
+ | B = e.Value(); | ||
+ | } else { | ||
+ | B = b.Value(); | ||
+ | A = e.Value(); | ||
} | } | ||
− | + | // console.log('Berechne T0 mit A=' + A, 'B=' + B); | |
− | + | for (var x = 1; x <= 100; x++) { | |
− | + | C = A / x; | |
− | + | Q = B / C; | |
− | + | // console.log(x + '. Durchgang: C = ' + C, 'Q = ' + Q); | |
− | + | if (isInt(Q)) { | |
− | + | // console.log('Q ist eine Ganzzahl!!! T0 ist damit ', 1 / C); | |
− | + | return 1 / C; | |
} | } | ||
− | + | if (x === 10) { | |
− | + | return 10; | |
− | |||
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} | } | ||
+ | if ((1 / C) > 10) | ||
+ | return 10 | ||
+ | } | ||
+ | } | ||
+ | |||
+ | |||
+ | |||
+ | // Ausgabe des Wertes x(t) | ||
+ | setInterval(function() { | ||
+ | document.getElementById("x(t)").innerHTML = Math.round((a.Value() * Math.cos(2 * Math.PI * b.Value() * t.Value() - 2 * Math.PI * c.Value() / 360) + d.Value() * Math.cos(2 * Math.PI * e.Value() * t.Value() - 2 * Math.PI * g.Value() / | ||
+ | 360)) * 1000) / 1000; | ||
+ | }, 50); | ||
+ | |||
+ | // Ausgabe des Wertes x(t+T_0) | ||
+ | setInterval(function() { | ||
+ | document.getElementById("x(t+T_0)").innerHTML = Math.round((a.Value() * Math.cos(2 * Math.PI * b.Value() * (t.Value() + Math.round(getT0() * 1000) / 1000) - c.Value()) + d.Value() * Math.cos(2 * Math.PI * e.Value() * (t.Value() + | ||
+ | Math.round(getT0() * 1000) / 1000) - g.Value())) * 1000) / 1000; | ||
+ | }, 50); | ||
+ | |||
+ | // Ausgabe des Wertes x(t+2T_0) | ||
+ | setInterval(function() { | ||
+ | document.getElementById("x(t+2T_0)").innerHTML = Math.round((a.Value() * Math.cos(2 * Math.PI * b.Value() * (t.Value() + 2 * Math.round(getT0() * 1000) / 1000) - c.Value()) + d.Value() * Math.cos(2 * Math.PI * e.Value() * (t.Value() + | ||
+ | 2 * Math.round(getT0() * 1000) / 1000) - g.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((a.Value() * Math.cos(2 * Math.PI * b.Value() * (i / 1000) - 2 * Math.PI * c.Value() / 360) + d.Value() * Math.cos(2 * Math.PI * e.Value() * (i / 1000) - 2 * Math.PI * g.Value() / 360)) * 1000) / 1000; | ||
} | } | ||
− | + | document.getElementById("x_max").innerHTML = Math.max.apply(Math, x); | |
− | + | }, 50); | |
− | + | ||
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// Definition der Funktion zum An- und Ausschalten des Koordinatengitters | // Definition der Funktion zum An- und Ausschalten des Koordinatengitters | ||
function showgrid() { | function showgrid() { | ||
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} | } | ||
pltBox.fullUpdate(); | pltBox.fullUpdate(); | ||
+ | }; | ||
+ | |||
+ | // Definition des Reset-Buttons | ||
+ | function rst() { | ||
+ | document.getElementById("jxgForm").reset(); | ||
}; | }; | ||
</script> | </script> | ||
</body> | </body> | ||
</html> | </html> | ||
+ | |||
{{Display}} | {{Display}} |
Revision as of 08:54, 18 September 2017
$x(t) = A_1\cdot cos\Big(2\pi f_1\cdot t- \frac{2\pi}{360}\cdot \phi_1\Big)+A_2\cdot cos\Big(2\pi f_2\cdot t- \frac{2\pi}{360}\cdot \phi_2\Big)$
$x(t)$= | $x(t+ T_0)$= | $x(t+2T_0)$= |
$x_{\text{max}}$= | $T_0$= |