Measuring set and method for degree of orientation of ring axial charging permanent magnet

Measuring set and method for degree of orientation of ring axial charging permanent magnet

  • CN 101,382,586 B
  • Filed: 10/24/2008
  • Issued: 02/12/2014
  • Est. Priority Date: 10/24/2008
  • Status: Active Grant
First Claim
Patent Images

1. a degree of orientation measuring method for ring axial charging Sintered NdFeB magnet, is characterized in that, comprises the following steps:

  • Helmholtz coils is set, and it is connected with a multimeter, an input/output terminal capacitor in parallel of this multimeter;

    One rotating disk is set, makes the drive link of this rotating disk perpendicular to this rotating disk, and be positioned on the geometric center position of this Helmholtz coils;

    Utilize tooling fixture ring axial charging Sintered NdFeB magnet to be fixed on to the middle position of upper surface of this rotating disk and Helmholtz coils perpendicular to the geometric center position of this rotating disk direction;

    Open drive motor, make this driven by rotary disc ring axial charging Sintered NdFeB magnet rotation;

    After ring magnet constant speed rotary, record or gather the inductive voltage value of this Helmholtz coils;

    AndAccording to inductive voltage value, calculate the degree of orientation in toroidal axial charging Sintered NdFeB magnet finished product stage,The degree of orientation of ring axial charging permanent magnet represents by direction and the turning axle direction deviation angle α

    of magnetic moment m, and the conversion formula between this angle [alpha] and inductive voltage value Ueff is;

    α



    k*

    Ueff/0.01234*

    m*

    ω

    Wherein, k is coil constant;

    ω

    is angular velocity;

    M is total magnetic moment.

View all claims
    ×
    ×

    Thank you for your feedback

    ×
    ×