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Inertia Mismatch: Fact or Fiction?
2/7/2013

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Figure 3: Frequency response of a compliantly coupled motor-load (N=1).
Figure 3: Frequency response of a compliantly coupled motor-load (N=1).

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ttemple
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Platinum
Power Transfer
ttemple   2/7/2013 12:03:31 PM
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Kevin,

 Great explanation.  I consider the inertia ratio to be the single most important calculation when applying servos. If a motor/drive package has enough wattage to do the job at hand, and the inertia is properly matched, the system will normally work well with reasonable attention given to the mechanical details.

Maximum power transfer is often overlooked as a benefit of inertia matching.

3drob
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Platinum
Looks familiar ...
3drob   2/8/2013 9:41:21 AM
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As an EE, it looks to me like you are matching impedances (and maximizing power transfer).  It's always interesting to see the same answers come from seemingly unrelated fields/systems.

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