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High redundancy electromechanical actuator for thrust vector control of a launch vehicle

High redundancy electromechanical actuator for thrust vector control of a launch vehicle The purpose of this paper is to design an electromechanical actuator which can inherently tolerate a stuck or loose failure without any need for fault detection isolation and reconfiguration.Design/methodology/approachGeneralized design methodology for a thrust vector control application is adopted to reduce the design iterations during the initial stages of the design. An optimum ball screw pitch is selected to minimize the motor sizing and maximize the load acceleration.FindingsA high redundancy electromechanical actuator for thrust vector control has lower self-inertia and higher reliability than a direct drive simplex configuration. This configuration is a feasible solution for thrust vector control application because it offers a more acceptable and graceful degradation than a complete failure.Research limitations/implicationsFuture work will include testing on actual hardware to study the transient disturbances caused by a fault and their effect on launch vehicle dynamics.Practical implicationsHigh redundancy electromechanical actuator concept can be extended to similar applications such as solid motor nozzle in satellite launch vehicles and primary flight control system in aircraft.Social implicationsHigh redundancy actuators can be useful in safety critical applications involving human beings. It can also reduce the machine downtime in industrial process automation.Originality/valueThe jam tolerant electromechanical actuator proposed for the launch vehicle application has a unique configuration which does not require a complex fault detection isolation and reconfiguration logic in the controller. This enhances the system reliability and allows a simplex controller having a lower cost. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Aircraft Engineering and Aerospace Technology Emerald Publishing

High redundancy electromechanical actuator for thrust vector control of a launch vehicle

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Publisher
Emerald Publishing
Copyright
© Emerald Publishing Limited
ISSN
1748-8842
DOI
10.1108/aeat-06-2018-0165
Publisher site
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Abstract

The purpose of this paper is to design an electromechanical actuator which can inherently tolerate a stuck or loose failure without any need for fault detection isolation and reconfiguration.Design/methodology/approachGeneralized design methodology for a thrust vector control application is adopted to reduce the design iterations during the initial stages of the design. An optimum ball screw pitch is selected to minimize the motor sizing and maximize the load acceleration.FindingsA high redundancy electromechanical actuator for thrust vector control has lower self-inertia and higher reliability than a direct drive simplex configuration. This configuration is a feasible solution for thrust vector control application because it offers a more acceptable and graceful degradation than a complete failure.Research limitations/implicationsFuture work will include testing on actual hardware to study the transient disturbances caused by a fault and their effect on launch vehicle dynamics.Practical implicationsHigh redundancy electromechanical actuator concept can be extended to similar applications such as solid motor nozzle in satellite launch vehicles and primary flight control system in aircraft.Social implicationsHigh redundancy actuators can be useful in safety critical applications involving human beings. It can also reduce the machine downtime in industrial process automation.Originality/valueThe jam tolerant electromechanical actuator proposed for the launch vehicle application has a unique configuration which does not require a complex fault detection isolation and reconfiguration logic in the controller. This enhances the system reliability and allows a simplex controller having a lower cost.

Journal

Aircraft Engineering and Aerospace Technology – Emerald Publishing

Published: Aug 21, 2019

Keywords: Bearing; Ball screw; Electromechanical actuator; High redundancy actuator; Motor; Thrust vector control

References

  • A diagnostic approach for electromechanical actuators in aerospace systems
    Balaban, E.; Bansal, P.; Stoelting, P.; Saxena, A.; Goebel, K.F.; Curran, S.
  • Optimum design of a fault tolerant linear electromechanical actuator for the lower stage thrust vector control of a satellite launch vehicle
    Biju, P.B.; Sandeep, R.; Aravind, R.; Pradeep, K.; Naik, U.J.
  • Fault tolerant electromechanical actuator having a torque sensing control system
    Blanding, D.E.; Peck, J.
  • Seeded failure testing and analysis of an electromechanical actuator
    Bodden, D.S.; Clements, N.S.; Schley, B.; Jenney, G.
  • Particle filter based anomaly detection for aircraft actuation systems
    Brown, D.; Georgoulas, G.; Bae, H.; Vachtsevanos, G.; Chen, R.; Ho, Y.H.; Tannenbaum, G.; Schroeder, J.B.
  • A data driven methodology for fault detection in electromechanical actuator
    Chirico, A.J.; Kolodziej, J.R.
  • Multi-agent control of high redundancy actuation
    Davies, J.; Dixon, R.; Goodall, R.M.; Steffen, T.
  • HRA – intrinsically fault tolerant actuation through high redundancy
    Dixon, R.; Steffen, T.; Goodall, R.M.; Zolotas, A.C.; Pearson, J.; Du, X.
  • Assessment of strategies for control of high redundancy actuators
    Du, X.; Dixon, R.; Goodall, R.M.; Zolotas, A.C.
  • Modelling and control of a high redundancy actuator
    Du, X.; Dixon, R.; Goodall, R.M.; Zolotas, A.C.
  • Fault tolerant linear electromechanical actuator
    Larson, L.V.L.; Larsen, R.K.
  • Bearing fault detection techniques – a review
    Nabhan, A.; Ghazaly, N.M.; Samy, A.; Mousa, M.O.
  • Fault tolerant electromechanical actuator
    Sheahan, J.J.; Morris, C.E.; Blanding, D.E.; Peck, J.L.
  • Analysing the reliability of actuation elements in series and parallel configurations for high redundancy actuation
    Steffen, T.; Schiller, F.; Blum, M.; Dixon, R.
  • Detection of bearing fault in mechanical systems using stator current monitoring
    Sukhjeet, S.; Navin, K.
  • Stator current based bearing fault detection techniques: a general review
    Zhou, W.; Habetler, T.G.; Harley, R.G.