Physical Modelling and Estimator-Based Control as Basis of Energy-Efficient Actuators

A special issue of Actuators (ISSN 2076-0825).

Deadline for manuscript submissions: closed (31 May 2018) | Viewed by 11305

Special Issue Editors


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Chair of Mechatronics, University of Rostock, Justus-von-Liebig-Weg 6, D-18059 Rostock, Germany
Interests: mechatronics; physical modelling; nonlinear control and estimation; optimization
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Special Issue Information

Dear Colleagues,

It is well known that energy considerations play an important role both in physical modelling and feedback control design of dynamical systems.

The consideration of energy flows is extremely important in the model-based design of actuators in terms of their energy efficiency and their performance. In fact, by taking the intrinsic physical couplings into account, such as in:

  • electromagnetic systems
  • piezo-electric systems
  • Peltier elements
  • fluidic actuator-like pneumatic muscles.

More compact actuator designs and energy-efficient control strategies with increased performance become possible.

This call aims at collecting contributions related to the design and feedback control of actuators in any field of applications, where the physical couplings are exploited to obtain more efficient, highly compact and innovative devices. The call is mainly focused on, but not limited to, the following fields:

  • Electromagnetic actuators: innovative designs, model-based optimization and observer-based control using the back-electromotiveforce (bemf)
  •  Concept and control of devices using Eddy current effects in order to recover energy
  • Use of Seebeck-Peltier effects to obtain efficient thermal actuators and corresponding control algorithms
  • Piezo-electric system using the back-electro charge force (becf) in control and estimation
  • Innovative fluidic actuators in combination with observer-based control.

Moreover, the call also addresses self-sensing effects in feedback-controlled actuators that are implemented by using state and disturbance observers, Kalman Filters or similar estimator structures.

Prof. Dr.-Ing. Paolo Mercorelli
Prof. Dr.-Ing. Harald Aschemann
Guest Editors

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Keywords

  • Efficient control and estimation schemes for electromagnetic, piezo-electric, thermal and fluidic actuators
  • Efficient model-based design of actuators
  • Eddy current control

Published Papers (2 papers)

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Research

22 pages, 1041 KiB  
Article
The Flux-Based Sensorless Field-Oriented Control of Permanent Magnet Synchronous Motors without Integrational Drift
by Tomislav Strinić, Siegfried Silber and Wolfgang Gruber
Actuators 2018, 7(3), 35; https://doi.org/10.3390/act7030035 - 03 Jul 2018
Cited by 4 | Viewed by 5680
Abstract
The magnitude of the rotor magnetic flux linkage and its spatial orientation within a permanent magnet synchronous motor directly define the angular position of the rotor and are thus used in many sensorless applications as the governing variables. The rotor magnetic flux linkage [...] Read more.
The magnitude of the rotor magnetic flux linkage and its spatial orientation within a permanent magnet synchronous motor directly define the angular position of the rotor and are thus used in many sensorless applications as the governing variables. The rotor magnetic flux linkage in the stator reference frame is represented by two orthogonal sinusoids whose amplitudes and phases are determined by the integration of the orthogonal components of the corresponding voltage, which, due to DC offsets and initial conditions at transient states, result in an integrational drift. This paper proposes a solution to the problem of such integrational drift in the form of a compensation based only on orthogonal properties of waveforms in the stator reference frame. That makes it completely independent of electrical parameters of the motor. As a result, the proposed compensation of the integrational drift does not require any optimization by the user and it is functional from a standstill. The effectiveness of the proposed compensation is demonstrated analytically, by a simulation, and an experiment on a real motor by a simple observer for the sensorless field-oriented control based on the voltage model in the stator reference frame. Full article
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11 pages, 2044 KiB  
Article
A Calibrated Lumped Element Model for the Prediction of PSJ Actuator Efficiency Performance
by Matteo Chiatto, Andrea Palumbo and Luigi De Luca
Actuators 2018, 7(1), 10; https://doi.org/10.3390/act7010010 - 16 Mar 2018
Cited by 9 | Viewed by 4808
Abstract
Among the various active flow control techniques, Plasma Synthetic Jet (PSJ) actuators, or Sparkjets, represent a very promising technology, especially because of their high velocities and short response times. A practical tool, employed for design and manufacturing purposes, consists of the definition of [...] Read more.
Among the various active flow control techniques, Plasma Synthetic Jet (PSJ) actuators, or Sparkjets, represent a very promising technology, especially because of their high velocities and short response times. A practical tool, employed for design and manufacturing purposes, consists of the definition of a low-order model, lumped element model (LEM), which is able to predict the dynamic response of the actuator in a relatively quick way and with reasonable fidelity and accuracy. After a brief description of an innovative lumped model, this work faces the experimental investigation of a home-designed and manufactured PSJ actuator, for different frequencies and energy discharges. Particular attention has been taken in the power supply system design. A specific home-made Pitot tube has allowed the detection of velocity profiles along the jet radial direction, for various energy discharges, as well as the tuning of the lumped model with experimental data, where the total device efficiency has been assumed as a fitting parameter. The best fitting value not only contains information on the actual device efficiency, but includes some modeling and experimental uncertainties, related also to the used measurement technique. Full article
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