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Versatile control of a linear synchronous motor propulsion system

  • US 8,863,669 B2
  • Filed: 06/07/2012
  • Issued: 10/21/2014
  • Est. Priority Date: 06/07/2011
  • Status: Active Grant
First Claim
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1. A transport system, comprising(a) a guideway including a plurality of propulsion coils disposed along a region in which one or more vehicles are to be propelled,(b) one or more vehicles disposed on the guideway, each containing a magnetic flux source,(c) electronic power and control circuitry that excites the propulsion coils independently so as to propel the one or more vehicles along the guideway,(d) a first set of one or more controllers and a second set of one or more controllers, wherein the first set of one or more controllers is coupled to the second set of one or more controllers, and wherein the second set of one or more controllers is coupled to the electronic power and control circuitry,(e) the guideway comprising at least (i) a first zone in which motion of vehicles thereon is commanded by application of set point-based parameters to the second set of controllers, and (ii) a second zone in which motion of vehicles thereon is commanded by application of limit-based parameters to the second set of controllers,(f) the first set of one or more controllers generates set point-based parameters for application to the second set of one or more controllers in order to control motion of vehicles in the first zone,(g) the first set of one or more controllers generate limit-based parameters for application to the second set of one or more controllers to control motion of vehicles in the second zone, and the second set of controllers generate set point parameters from those limit-based parameters,(h) the second set of controllers apply control signals to the electronic power and control circuitry based on set point parameters to control motion of vehicles in the first and second zones.

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