Magcam Rotor Scanner

The Magcam Rotor Scanner or mapper is a 3-axis motorized scan stage with an integrated MiniCube1D or MiniCube3D magnetic field camera for measuring the magnetic field distribution of permanent magnet rotors and curved segments. The magnetic field distribution on the full rotor surface can be measured in a few seconds with high resolution. It features motorized stages for the radial, axial and rotation directions.

The scan stage is controlled automatically by the MagScope measurement & analysis software.

Hardware features

Rotor diameter range: 0 - 500mm
Axial measurement range: 0 - 300mm (450mm long version)
Scan speed: up to 12.7mm of axial length in 2 seconds (with 0.1mm axial resolution, 1° angular resolution)
Dimensions (LxDxH): 780mm x 1000mm x 1900mm
Integrated MiniCube1D or MiniCube3D magnetic field camera
Repeatability of X and Z axes: 1.3 μm
Repeatability of angular axis (unidirectional): 0.2 arc-min
Motor type: synchronous servomotor on all axes
Automatic collision detection
Beckhoff PLC controller
Delivered on a practical rolling cart

Software features

Automated scanning and image stitching
Automatic zero crossing detection and pole count
Automatic pole size measurement
Pole height uniformity and north-south pole symmetry
Local magnetization / material defects
Fourier analysis of harmonics

Rotor Scanner demo video

Includes

Magcam MiniCube1D

The Minicube1D is a compact Bz magnetic field camera containing a patented sensor chip with an integrated two-dimensional array of 16384 microscopic Hall magnetic field sensors.

Magcam MiniCube3D

The Minicube3D is a 3D magnetic field camera, providing quantitative (Bx,By,Bz) magnetic field mapping in a 12.7mm x 12.7mm 2D plane with a 0.1mm spatial resolution, measured at high speed.

Rotor Scanner software

Rotor Scanner introduction

The Rotor Scanner is controlled by the MagScope measurement & analysis software, together with several plug-ins.

The Rotor Scanner is controlled by the MagScope measurement & analysis software, together with several plug-ins. The software takes care of automated scanning and image stitching to display the magnetic field distribution of the complete rotor in one image. The analysis of the radial, tangential and axial magnetic field components (with MiniCube3D camera) can be performed in great detail.

It is possible to detect zero crossings automatically, count and measure the poles, check the uniformity and symmetry of north-south poles, perform a Fourier analysis of hamonics, etc.

Rotor scan volume

The ‘Scan Volume’ group in the MagScope software defines the measurement volume. For the X and Z directions, the user defines the desired offset and range of the measurement. The Range for the X direction determines how many concentric scans are performed. The Range for the Z direction determines the axial scan length.

The ‘Scan Volume’ group defines the measurement volume. For the X and Z directions, the user defines the desired offset (relative to the Z Reference position for Z and relative to the outer rotor surface for X) and range of the measurement. The Range for the X direction determines how many concentric scans are performed (at different radial distances). The Range for the Z direction determines the axial scan length.

The number of steps needed to cover the defined volume is instantly updated.

Permanent Magnet Rotors

Both small electric rotors for e.g. servo steering and larger rotors for e.g. electric vehicle (EV) drives are measured with Magcam’s Rotor or Combi Scanner.

Crack Detection

The MagFit module integrated in the MagScope software can filter out the signature of cracks from the background field distribution and automatically detect cracks.

MagScope software