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2008-01-31 Manufacturing
News
ELAU servo solutions Stable feedback loops The behavior of a servo drive after optimization with AutoTune from ELAU makes the feedback loop optimization and commissioning both faster and simpler.
Whether simple or complex applications, ELAU, of the Schneider Electric group, servo solutions don’t compromise stable feedback loops for fast commissioning. In about 95 percent of all cases, even the preset default parameters will yield outstanding results. And with more complex applications, the AutoTune tool will automatically define the correct control parameters after only a few entries. Whether simple or complex applications, ELAU servo solutions don’t compromise stable feedback loops for fast commissioning. In about 95 percent of all cases, even the preset default parameters will yield outstanding results. And with more complex applications, the AutoTune tool will automatically define the correct control parameters after only a few entries. The quality of a drive solution depends to a great extent on tuning the servo controller to the load to be driven by the servo drive. If the selected parameters are incorrect, the following effects will occur: Low dynamics, significant following errors, position errors, position overshoots, unstable motion, extended motion sequences, etc. With simple mechanics such performance deficits typically remain within tolerable limitst, but large loads and flexible couplings will lead to significant issues.
However, ELAU’s experience in packaging machine engineering eliminates these issues entirely. PacDrive* controllers use default settings which have proven ideal for drive sizing in 95 percent of all applications. The only parameter required is the moment of inertia of the load. ELAU has also developed a solution for more challenging cases. For example, high inertial loads result in a complex moment of inertia calculation. The same applies to situations where the motor’s mechanical coupling stiffness is marginal. Belt drive mechanisms, for instance, virtually always require fine tuning. Calculating the ideal controller parameters in these situations will be quite challenging, even for experienced engineers. ‘AutoTune’ resolves the situation AutoTune automatically calculates the moment of inertia for individual
axes. A number of limit values are set manually, and then the optimization
process can be launched. The tool will automatically and independently
calculate the optimal parameters for stable feedback loops by measuring
the feedback from preset signals. The optimization process may either
be focused on minimizing the following error or maximizing attenuation
of resonances. See all the Press Releases from ELAU sites - Click Here Read a recent article about - Got a Cool Job in Automation Solutions?- Get the word out today! Our Dedicated Portal Helps U- $ave
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