Quality control of multipole permanent magnet rotors

 

The RMP rotor quality control system is a unique measurement device to map the magnetic field of permanent magnetic rotors. It contains precise mechanics, 3 - axis Hall sensors, and a magneto-optical module for the recognition of small magnetization structures and micro-sized material defects and cracks. Due to the magneto-optical module a real time visualization of the magnetic field structure is possible.

 

 

Application background

Permanent magnetic rotors with different geometries are common components in most electrical motor or clutch setups. In order to reduce high starting moments, vibration and noise the magnetic field of a rotor must be precisely designed. Standard FEM tools help thereby to find the ideal rotor configuration regarding the application.

 

 

However, in real world the magnetic field is influenced by the quality of the used magnets. A factor which is often not controlled to apply to FEM specifications.
The RMP uses two different approaches to control the resulting field configuration: Hall probes (single and 3-axial) are used for absolute and precise flux density measurements.

Furthermore real time visualization with high geometric resolution can be performed with the magneto-optical module to detect material defects and the field distribution over large areas at once.

 

The RMP rotor quality control system - Quality control of multipole permanent magnet rotors
The RMP rotor quality control system - Quality control of multipole permanent magnet rotors

 

Technical Features

 

Rotor dimensions:

  • Max. rotor measurement height: 350 mm
  • Max. rotor measurement height: 350 mm
  • Max. rotor diameter: 400 mm
  • Max. weight: 80 kg
  • Max. rotating speed: 1 turn/s

Sensors: calibrated 3D-Hall-Probe

  • Measurement range: ±1 T
  • Measurement range: ±1 T
  • Measurement resolution: 16 Bit
  • Sampling rate: approx. 10 kHz
  • Scan speed (height): Adjustable up to 10 mm/s

Mechanical features & options:

  • Min. step distance of the linear axes: 10 μm
  • Min. step distance of the linear axes: 10 μm
  • Angular resolution of the rotational axis: 0,03 °
  • Mechanical control for sensor safety: Touch-probe mode
  • Control and evaluation via integrated PC

 

Download:

RMP rotor quality control system product flyer DE-EN

 

 

Back to Overview

 

 

 

 

Contact Information Marketing & Sales Matesy GmbH: 

Tel: +49 (0) 3641 79799 00  |  Fax:+49 (0) 3641 79799 01  E-mail: info[at]matesy[dot]de  |  Web: www.matesy.de