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KevinOConnor
2023-10-23 00:04:07 +00:00
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zh/Resonance_Compensation.html
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@@ -624,8 +624,8 @@
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Axis Twist Compensation
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Bootloader Entry
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@@ -1748,12 +1748,21 @@ shaper_type: 2hump_ei
<h3 id="after-successfully-printing-for-some-time-without-ringing-it-appears-to-come-back">After successfully printing for some time without ringing, it appears to come back<a class="headerlink" href="#after-successfully-printing-for-some-time-without-ringing-it-appears-to-come-back" title="Permanent link">&para;</a></h3>
<p>It is possible that after some time the resonance frequencies have changed. E.g. maybe the belts tension has changed (belts got more loose), etc. It is a good idea to check and re-measure the ringing frequencies as described in <a href="#ringing-frequency">Ringing frequency</a> section and update your config file if necessary.</p>
<h3 id="is-dual-carriage-setup-supported-with-input-shapers">Is dual carriage setup supported with input shapers?<a class="headerlink" href="#is-dual-carriage-setup-supported-with-input-shapers" title="Permanent link">&para;</a></h3>
<p>There is no dedicated support for dual carriages with input shapers, but it does not mean this setup will not work. One should run the tuning twice for each of the carriages, and calculate the ringing frequencies for X and Y axes for each of the carriages independently. Then put the values for carriage 0 into [input_shaper] section, and change the values on the fly when changing carriages, e.g. as a part of some macro:</p>
<div class="highlight"><pre><span></span><code>SET_DUAL_CARRIAGE CARRIAGE=1
SET_INPUT_SHAPER SHAPER_FREQ_X=... SHAPER_FREQ_Y=...
<p>Yes. In this case, one should measure the resonances twice for each carriage. For example, if the second (dual) carriage is installed on X axis, it is possible to set different input shapers for X axis for the primary and dual carriages. However, the input shaper for Y axis should be the same for both carriages (as ultimately this axis is driven by one or more stepper motors each commanded to perform exactly the same steps). One possibility to configure the input shaper for such setups is to keep <code>[input_shaper]</code> section empty and additionally define a <code>[delayed_gcode]</code> section in the <code>printer.cfg</code> as follows:</p>
<div class="highlight"><pre><span></span><code>[input_shaper]
# Intentionally empty
[delayed_gcode init_shaper]
initial_duration: 0.1
gcode:
SET_DUAL_CARRIAGE CARRIAGE=1
SET_INPUT_SHAPER SHAPER_TYPE_X=&lt;dual_carriage_shaper&gt; SHAPER_FREQ_X=&lt;dual_carriage_freq&gt; SHAPER_TYPE_Y=&lt;y_shaper&gt; SHAPER_FREQ_Y=&lt;y_freq&gt;
SET_DUAL_CARRIAGE CARRIAGE=0
SET_INPUT_SHAPER SHAPER_TYPE_X=&lt;primary_carriage_shaper&gt; SHAPER_FREQ_X=&lt;primary_carriage_freq&gt; SHAPER_TYPE_Y=&lt;y_shaper&gt; SHAPER_FREQ_Y=&lt;y_freq&gt;
</code></pre></div>
<p>And similarly when switching back to carriage 0.</p>
<p>Note that <code>SHAPER_TYPE_Y</code> and <code>SHAPER_FREQ_Y</code> should be the same in both commands. It is also possible to put a similar snippet into the start g-code in the slicer, however then the shaper will not be enabled until any print is started.</p>
<p>Note that the input shaper only needs to be configured once. Subsequent changes of the carriages or their modes via <code>SET_DUAL_CARRIAGE</code> command will preserve the configured input shaper parameters.</p>
<h3 id="does-input_shaper-affect-print-time">Does input_shaper affect print time?<a class="headerlink" href="#does-input_shaper-affect-print-time" title="Permanent link">&para;</a></h3>
<p>No, <code>input_shaper</code> feature has pretty much no impact on the print times by itself. However, the value of <code>max_accel</code> certainly does (tuning of this parameter described in <a href="#selecting-max_accel">this section</a>).</p>
<h2 id="technical-details">Technical details<a class="headerlink" href="#technical-details" title="Permanent link">&para;</a></h2>
@@ -1834,7 +1843,7 @@ SET_INPUT_SHAPER SHAPER_FREQ_X=... SHAPER_FREQ_Y=...
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