Inversion-based feedforward control design for linear transport systems with spatially acting input. Issue 5 (4th April 2017)

• Record Type: Journal Article
• Authors: Alt, S.; Schmidt, K.; Arnold, E.; Zeitz, M.; Sawodny, O.
• Is Part Of: International journal of systems science. Volume 48:Issue 5(2017)
• Page Start: 930
• Page End: 940
• Publication Date: 2017-04-04
• Subjects: Linear transport system -- distributed delays -- inversion-based feedforward control -- frequency domain design -- two-degrees-of-freedom control structure; System analysis -- Periodicals; 003.3
• DOI: 10.1080/00207721.2016.1221481
• Languages: English
• ISSNs: 0020-7721

Abstract

ABSTRACT: The considered transport systems, which possess an actuator with a spatial influence characteristic along the transport path, are used for the transport of material between different process stages and for the conditioning of the conveyed goods at the same time. The spatially acting input results in complex input/output behaviour of a Single-Input Single-Output (SISO) system with distributed delays. The feedforward control task under consideration is defined by a setpoint change of the subsequent process stage. For the feedforward controller design, an inversion-based approach in the frequency domain is investigated to steer the output of the transport system towards a predefined constant value. In order to compensate model uncertainties and reject unknown disturbances, the results of the inversion-based feedforward control are used to design a feedback controller.