Mixed Force and Displacement Control Strategy in Pseudo-Dynamic Tests for Structures with Large Stiffness

Xiao Jing Tan; Bin Wu

doi:10.4028/www.scientific.net/AMR.639-640.1133

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 639-640Mixed Force and Displacement Control Strategy in...

Mixed Force and Displacement Control Strategy in Pseudo-Dynamic Tests for Structures with Large Stiffness

Abstract:

Pseudo-dynamic testing using force- mixed control strategy is presented for structures with large stiffness. In this proposed method, the displacement response of the specimen measured by a linear variable displacement transducer with higher resolution than that in the actuator is fed back. A proportional-integral controller is adopted in the outer displacement control loop, and a coefficient CF is employed to convert the displacement to force command. Numerical and experimental validations show that this method exhibits excellent performance in terms of stability and accuracy if proper controller parameters are adopted and is superior to the conventional displacement control method for large-stiffness structures.

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Periodical:

Advanced Materials Research (Volumes 639-640)

Pages:

1133-1136

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.639-640.1133

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Online since:

January 2013

Authors:

Xiao Jing Tan, Bin Wu

Keywords:

Displacement Control, Force Control, Mixed Control, Proportional-Integral Controller, Pseudo-Dynamic Test

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References

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