Editing Inertia mismatch
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It is generally to avoid higher than 10:1 inertia mismatch, meaning that load inertia should be no more than 10 times the motor's inertia. However, for good [[servo stiffness]] it is recommended to keep mismatch below 5:1 or even 3:1. The lower the better. Some most demanding applications may require ratio of 1:1 or even 0.7:1 (motor inertia greater than load inertia). However, with very stiff machine construction combined with other countermeasures, mismatch of 1000:1 or more is possible. Achieving that however, might require deeper understanding of the physics behind this phenomenon. | It is generally to avoid higher than 10:1 inertia mismatch, meaning that load inertia should be no more than 10 times the motor's inertia. However, for good [[servo stiffness]] it is recommended to keep mismatch below 5:1 or even 3:1. The lower the better. Some most demanding applications may require ratio of 1:1 or even 0.7:1 (motor inertia greater than load inertia). However, with very stiff machine construction combined with other countermeasures, mismatch of 1000:1 or more is possible. Achieving that however, might require deeper understanding of the physics behind this phenomenon. | ||
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==Caulculating inertias== | ==Caulculating inertias== | ||
===Motor=== | ===Motor=== | ||
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=== Further reading === | === Further reading === | ||
* http://www.controleng.com/search/search-single-display/how-to-work-with-mechanical-resonance-in-motion-control-systems/771ea1513d.html | * http://www.controleng.com/search/search-single-display/how-to-work-with-mechanical-resonance-in-motion-control-systems/771ea1513d.html | ||
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