Active vibration isolation feedback control for Coriolis Mass-Flow Meters

Active Vibration Isolation Control (AVIC) can be used to reduce the transmissibility of external vibrations to internal vibrations. In this paper a proposal is made for integrating AVIC in a Coriolis Mass-Flow Meter (CMFM). Acceleration feedback, virtual mass and virtual skyhook damping are added to a passively suspended CMFM, resulting in a lowered suspension frequency. In addition, position feedback of the internal deformation is used to damp the internal mode. The controller design is based on a simplified model and is validated on an experimental setup. Results show that the sensitivity to external vibrations is reduced by 40 dB for the RMS measurement error

[1]  Joost Conrad Lötters,et al.  Quantification of the influence of external vibrations on the measurement error of a Coriolis Mass-Flow Meter , 2014 .

[2]  E. Rivin.  Passive Vibration Isolation , 2003 .

[3]  Bernard Muschielok,et al.  The 4MOST instrument concept overview , 2014, Astronomical Telescopes and Instrumentation.

[4]  C. Clark,et al.  The influence upon Coriolis mass flow meters of external vibrations at selected frequencies , 2003 .

[5]  Aditya Mehendale.  Coriolis mass flow rate meters for low flows , 2008 .

[6]  J. B. Jonker.  A finite element dynamic analysis of spatial mechanisms with flexible links , 1989 .

[7]  D. Tjepkema,et al.  Active hard mount vibration isolation for precision equipment , 2008 .

[8]  Dean Karnopp,et al.  Comparative Study of Optimization Techniques for Shock and Vibration Isolation , 1969 .

[9]  J. van Dijk.  Mechatronic Design of Hard-Mount Concepts for Precision Equipment , 2009 .

[10]  G. Sultan,et al.  Modelling of the Coriolis mass flowmeter , 1989 .

[11]  A. Preumont.  Vibration Control of Active Structures , 1997 .

[12]  M. Anklin,et al.  Coriolis mass flowmeters: Overview of the current state of the art and latest research , 2006 .

[13]  Colin G. Gordon.  Generic vibration criteria for vibration-sensitive equipment , 1999, Optics + Photonics.

[14]  Colin G. Gordon.  Generic criteria for vibration-sensitive equipment , 1992, Other Conferences.

[15]  Jacob Philippus Meijaard.  Fluid-conveying flexible pipes modeled by large-deflection finite elements in multibody systems , 2014 .