Distributed LIM-based actuator and control for an ultrafast material transfer network

Long Jang Li, Vittaldas V. Prabhu, Neil A. Duffie, Robert D. Lorenz

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Citations (Scopus)

Abstract

A concept of distributed actuators and their controls for ultra-fast, material transfer network based upon linear induction motors (LIMs) is presented in this paper. The distributed actuator consists of modularized stationary primaries connected to form a distributed, closed guideway structure with multiple loops through which vehicles (moving secondaries of the LIM) are propelled at a maximum velocity of 120 km/hr and a maximum acceleration of 4 g. The turning radius can be less than 1 m. A transverse flux LIM propulsion unit design provides robust, direct-drive electromagnetic vector controlled propulsion and electromagnetic steering. The controlled moving secondary vehicles are completely passive with no power, sensing, or control intelligence onboard. The need to control multiple passive vehicles simultaneously moving through a multitude of propulsion units mandates a highly distributed control architecture where propulsion units cooperate using a communication network. The need for centralized database and control is eliminated by endowing the communication network with a topology identical to that of the guideway network. The distributed control architecture ensures spontaneity of material delivery by integrating vehicle motion control with intelligence for real-time collision avoidance, a parallel shortest-path routing algorithm, and an autonomous dispatching protocol. Recent experimental results are presented.

Original languageEnglish (US)
Title of host publicationProceedings of SPIE - The International Society for Optical Engineering
EditorsGeorge E. Foret, Kam C. Lau, Bart O. Nnaji
Pages200-213
Number of pages14
Volume2595
StatePublished - 1995
EventMachine Tool, In-Line, and Robot Sensors and Controls - Philadelphia, PA, USA
Duration: Oct 25 1995Oct 26 1995

Other

OtherMachine Tool, In-Line, and Robot Sensors and Controls
CityPhiladelphia, PA, USA
Period10/25/9510/26/95

Fingerprint

induction motors
Linear motors
Induction motors
Actuators
actuators
Propulsion
propulsion
vehicles
Guideways
communication networks
intelligence
Telecommunication networks
electromagnetism
collision avoidance
Motion control
Collision avoidance
Routing algorithms
distributing
Topology
delivery

All Science Journal Classification (ASJC) codes

  • Electrical and Electronic Engineering
  • Condensed Matter Physics

Cite this

Li, L. J., Prabhu, V. V., Duffie, N. A., & Lorenz, R. D. (1995). Distributed LIM-based actuator and control for an ultrafast material transfer network. In G. E. Foret, K. C. Lau, & B. O. Nnaji (Eds.), Proceedings of SPIE - The International Society for Optical Engineering (Vol. 2595, pp. 200-213)
Li, Long Jang ; Prabhu, Vittaldas V. ; Duffie, Neil A. ; Lorenz, Robert D. / Distributed LIM-based actuator and control for an ultrafast material transfer network. Proceedings of SPIE - The International Society for Optical Engineering. editor / George E. Foret ; Kam C. Lau ; Bart O. Nnaji. Vol. 2595 1995. pp. 200-213
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Li, LJ, Prabhu, VV, Duffie, NA & Lorenz, RD 1995, Distributed LIM-based actuator and control for an ultrafast material transfer network. in GE Foret, KC Lau & BO Nnaji (eds), Proceedings of SPIE - The International Society for Optical Engineering. vol. 2595, pp. 200-213, Machine Tool, In-Line, and Robot Sensors and Controls, Philadelphia, PA, USA, 10/25/95.

Distributed LIM-based actuator and control for an ultrafast material transfer network. / Li, Long Jang; Prabhu, Vittaldas V.; Duffie, Neil A.; Lorenz, Robert D.

Proceedings of SPIE - The International Society for Optical Engineering. ed. / George E. Foret; Kam C. Lau; Bart O. Nnaji. Vol. 2595 1995. p. 200-213.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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AB - A concept of distributed actuators and their controls for ultra-fast, material transfer network based upon linear induction motors (LIMs) is presented in this paper. The distributed actuator consists of modularized stationary primaries connected to form a distributed, closed guideway structure with multiple loops through which vehicles (moving secondaries of the LIM) are propelled at a maximum velocity of 120 km/hr and a maximum acceleration of 4 g. The turning radius can be less than 1 m. A transverse flux LIM propulsion unit design provides robust, direct-drive electromagnetic vector controlled propulsion and electromagnetic steering. The controlled moving secondary vehicles are completely passive with no power, sensing, or control intelligence onboard. The need to control multiple passive vehicles simultaneously moving through a multitude of propulsion units mandates a highly distributed control architecture where propulsion units cooperate using a communication network. The need for centralized database and control is eliminated by endowing the communication network with a topology identical to that of the guideway network. The distributed control architecture ensures spontaneity of material delivery by integrating vehicle motion control with intelligence for real-time collision avoidance, a parallel shortest-path routing algorithm, and an autonomous dispatching protocol. Recent experimental results are presented.

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Li LJ, Prabhu VV, Duffie NA, Lorenz RD. Distributed LIM-based actuator and control for an ultrafast material transfer network. In Foret GE, Lau KC, Nnaji BO, editors, Proceedings of SPIE - The International Society for Optical Engineering. Vol. 2595. 1995. p. 200-213