Method for automatically setting responsiveness parameters for motion control systems

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United States of America Patent

PATENT NO 9690261
SERIAL NO

13926052

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Abstract

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Robustly stabilizing controller bandwidth for a controlled mechanical system is determined as a function of the system's estimated inertia and dominant system parameters that define constraints on the bandwidth. In one or more embodiments, a bandwidth model is derived that defines a relationship between robustly stabilizing controller bandwidth and system gain over a range of reasonable system uncertainties. Using the model, a suitable controller bandwidth can be determined for a given motion control system given only estimates of the system gain and the dominant parameters(s) that constrain the bandwidth. In an example two-inertia system, the system gain and dominant parameter can comprise system inertia and mechanical coupling stiffness, respectively. Accordingly, estimates of the system inertia and coupling stiffness can be provided to the system, which determines a suitable controller bandwidth for the motion control system characterized by the estimates.

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Patent Owner(s)

Patent OwnerAddress
DANFOSS POWER ELECTRONICS A/SULSNAES 1 GRASTEN DK-6300

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
El-Shaer, Ahmed H Westlake, US 4 106
Tian, Gang Westlake, US 28 350

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