×

Generalized modal space drive control system for a vibrating tube process parameter sensor

  • US 6,360,175 B1
  • Filed: 02/25/1998
  • Issued: 03/19/2002
  • Est. Priority Date: 02/25/1998
  • Status: Expired due to Term
First Claim
Patent Images

1. A drive system for vibrating a conduit, said drive system comprising:

  • a drive means positioned adjacent said conduit and responsive to a drive signal for vibrating said conduit;

    L motion sensors for producing L motion signals indicative of the movement of said conduit at the respective points of attachment of said L motion sensors to said conduit, wherein L is equal to or greater than 2;

    a modal response signal means that receives said L motion signals and produces N modal response signals wherein each of said N modal response signals corresponds to one of a plurality of vibration modes, wherein N is equal to or greater than 2;

    N modal filter channels in said modal response signal means wherein each of said N modal filter channels receives at least two of said L motion signals as input and produces one of said N modal response signals as an output;

    a drive controller means responsive to a production of said N modal response signals for producing N modal excitation signals, wherein each of said N modal excitation signals representing the modal excitation is used to achieve a desired modal response level for a respective vibration mode; and

    a modal-to-physical force projector means responsive to said N modal excitation signals for producing M drive signals wherein said M drive signals cause said drive means to vibrate said conduit in desired modes, wherein M is more than 1.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×