Copy of Window Averaging - on Wed, 07/22/2020 - 18:23 MASADesigner208 × MASA Member for 9 years 2 months 575 designs 8 groups https://explore.partquest.com/node/328472 <iframe allowfullscreen="true" referrerpolicy="origin-when-cross-origin" frameborder="0" width="100%" height="720" scrolling="no" src="https://explore.partquest.com/node/328472"></iframe> Title Description <p>**************</p> <p>Continuous PWM waveforms combine an averaged response with variations within the switching cycles. These switching cycle details can be removed by averaging with a sliding window, i.e. by replacing the value at each time point with an average taken over the previous switching period.</p> <p>This design demonstrates important characteristics of window averaging using a copy of the Inductor current waveform from the buck converter at</p> <p>https://www.systemvision.com/design/managing-pwm-waveforms-buck-converter</p> <p>Specific window averaging characteristics demonstrated here include the following:</p> <p>1) Window averaging is actually a linear filter function. This design implements two instances of that filter using continuous function blocks.</p> <p>2) The filter will virtually eliminate the switching cycle details if the window width is set equal to the period of that switching cycle.</p> <p>This design demonstrates items 1 and 2 at the upper left of the schematic.</p> <p>3) Window averaging introduces a delay equal to half the window width. The schematic demonstrates this by comparing the averaged waveform to a delayed version of the original, full switching waveform.</p> <p>4) At the upper right of the schematic there's an inverse filter that rebuilds the unsmoothed waveform. The rebuilt waveform is a virtually perfect match to the unsmoothed original.</p> <p>5) At the bottom of the schematic a copy of the filter is driven with a narrow pulse by which the 50us window is generated at the filter output. A frequency domain simulation outputs the corresponding sin(x)/x transfer function. These waveforms confirm that the filter realizes the window averaging operation.</p> About text formats Tags window averagingsliding windowspeak detectorsmoothingwindow width Select a tag from the list or create your own.Drag to re-order taxonomy terms. License - None -
Window Averaging NormDesigner43361 × Norm Member for 8 years 328 designs 2 groups https://explore.partquest.com/node/167951 <iframe allowfullscreen="true" referrerpolicy="origin-when-cross-origin" frameborder="0" width="100%" height="720" scrolling="no" src="https://explore.partquest.com/node/167951"></iframe> Title Description <p>**************</p><p>Continuous PWM waveforms combine an averaged response with variations within the switching cycles. These switching cycle details can be removed by averaging with a sliding window, i.e. by replacing the value at each time point with an average taken over the previous switching period.</p><p>This design demonstrates important characteristics of window averaging using a copy of the Inductor current waveform from the buck converter at</p><p>https://www.systemvision.com/design/managing-pwm-waveforms-buck-converter</p><p>Specific window averaging characteristics demonstrated here include the following:</p><p>1) Window averaging is actually a linear filter function. This design implements two instances of that filter using continuous function blocks.</p><p>2) The filter will virtually eliminate the switching cycle details if the window width is set equal to the period of that switching cycle. </p><p>This design demonstrates items 1 and 2 at the upper left of the schematic.</p><p>3) Window averaging introduces a delay equal to half the window width. The schematic demonstrates this by comparing the averaged waveform to a delayed version of the original, full switching waveform.</p><p>4) At the upper right of the schematic there's an inverse filter that rebuilds the unsmoothed waveform. The rebuilt waveform is a virtually perfect match to the unsmoothed original.</p><p>5) At the bottom of the schematic a copy of the filter is driven with a narrow pulse by which the 50us window is generated at the filter output. A frequency domain simulation outputs the corresponding sin(x)/x transfer function. These waveforms confirm that the filter realizes the window averaging operation.</p> About text formats Tags window averagingsliding windowspeak detectorsmoothingwindow width Select a tag from the list or create your own.Drag to re-order taxonomy terms. License - None -
Table Data NormDesigner43361 × Norm Member for 8 years 328 designs 2 groups https://explore.partquest.com/node/159921 <iframe allowfullscreen="true" referrerpolicy="origin-when-cross-origin" frameborder="0" width="100%" height="720" scrolling="no" src="https://explore.partquest.com/node/159921"></iframe> Title Description <p>Voltage generator for large V vs. time tables.</p><p>1) Drives a peak detector.</p><p>2) Drives a linear filter that performs window averaging. V0_averaged matches winave(V0_delayed) for a symmetrical averaging window. For asymmetrical windows adjust the extra_delay to V0_avg_delayed.</p> About text formats Tags large tableswindow averagingsliding windowspeak detector Select a tag from the list or create your own.Drag to re-order taxonomy terms. License - None -