Event-driven control of a speed varying digital displacement machine

Niels Henrik Pedersen, Per Johansen, Torben O. Andersen

Research output: Contribution to book/anthology/report/conference proceedingArticle in proceedingResearchpeer-review

6 Citations (Scopus)

Abstract

The design and analysis of feedback controllers for digital displacement machines requires a control oriented model. The displacement throughput of a full stroke operated machine is altered on a stroke-by-stroke basis at fixed rotation angles. In the case of a fixed speed operation, it may be treated as a Discrete Linear Time Invariant control problem with synchronous sampling rate. To make synchronous linear control theory applicable for a variable speed digital displacement machine, a method based on event-driven control is presented. Using this method, the time domain differential equations are converted into the spatial (position) domain to obtain a constant sampling rate and thus allowing for use of classical control theory. The method is applied to a down scaled digital fluid power motor, where the motor speed is controlled at varying references under varying pressure and load torque conditions. The controller synthesis is carried out as a discrete optimal deterministic problem with full state feedback. Based on a linear analysis of the feedback control system, stability is proven in a pre-specified operation region. Simulation of a non-linear evaluation model with the controller implemented shows great performance, both with respect to tracking and disturbance rejection.
Original languageEnglish
Title of host publicationProceedings of the 2017 Bath/ASME Symposium on Fluid Power and Motion Control, FPMC2017
Number of pages10
PublisherAmerican Society of Mechanical Engineers
Publication dateOct 2017
ISBN (Electronic)978-0-7918-5833-2
DOIs
Publication statusPublished - Oct 2017
Event2017 Bath/ASME Symposium on Fluid Power and Motion Control, FPMC2017 - Sarasota, United States
Duration: 16 Oct 201719 Oct 2017

Conference

Conference2017 Bath/ASME Symposium on Fluid Power and Motion Control, FPMC2017
CountryUnited States
CitySarasota
Period16/10/201719/10/2017

Fingerprint

Control theory
Controllers
Control system stability
Sampling
Disturbance rejection
State feedback
Feedback control
Loads (forces)
Differential equations
Torque
Throughput
Feedback
Fluids

Cite this

Pedersen, N. H., Johansen, P., & Andersen, T. O. (2017). Event-driven control of a speed varying digital displacement machine. In Proceedings of the 2017 Bath/ASME Symposium on Fluid Power and Motion Control, FPMC2017 American Society of Mechanical Engineers. https://doi.org/10.1115/FPMC2017-4260
Pedersen, Niels Henrik ; Johansen, Per ; Andersen, Torben O. / Event-driven control of a speed varying digital displacement machine. Proceedings of the 2017 Bath/ASME Symposium on Fluid Power and Motion Control, FPMC2017. American Society of Mechanical Engineers, 2017.
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Pedersen, NH, Johansen, P & Andersen, TO 2017, Event-driven control of a speed varying digital displacement machine. in Proceedings of the 2017 Bath/ASME Symposium on Fluid Power and Motion Control, FPMC2017. American Society of Mechanical Engineers, 2017 Bath/ASME Symposium on Fluid Power and Motion Control, FPMC2017, Sarasota, United States, 16/10/2017. https://doi.org/10.1115/FPMC2017-4260

Event-driven control of a speed varying digital displacement machine. / Pedersen, Niels Henrik; Johansen, Per; Andersen, Torben O.

Proceedings of the 2017 Bath/ASME Symposium on Fluid Power and Motion Control, FPMC2017. American Society of Mechanical Engineers, 2017.

Research output: Contribution to book/anthology/report/conference proceedingArticle in proceedingResearchpeer-review

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Pedersen NH, Johansen P, Andersen TO. Event-driven control of a speed varying digital displacement machine. In Proceedings of the 2017 Bath/ASME Symposium on Fluid Power and Motion Control, FPMC2017. American Society of Mechanical Engineers. 2017 https://doi.org/10.1115/FPMC2017-4260