SBAA577 March   2023 TMAG5170 , TMAG5273

 

  1.   Abstract
  2.   Trademarks
  3. 1Introduction
  4. 2Traditional Way of Collision Detection in Vacuum Robot
  5. 3Different Types of Hall-Effect Sensors
  6. 4Using 3D Hall Sensor for Detecting Collision Angle in Vacuum Robot
  7. 5Analysis of Error Sources
  8. 6Functional Demo Test

Functional Demo Test

The demo was created using TMAG5170UEVM and TI M0+EVM board. The mechanical implementations are shown in Figure 6-1.

GUID-20230213-SS0I-VTZG-K205-VKQ29LLH1KWS-low.jpg Figure 6-1 TMAG5170EVM Board and Robot Collision Angle Detecting Demo
GUID-20230213-SS0I-MPBV-6ZT3-JFWX4PQGGC3D-low.png Figure 6-2 Firmware Flowchart

2nd curve fit chart and error comparison

After implementing a 2nd curve-fit equation, the measuring error was reduced to ±3° from a max -11°.

GUID-20230213-SS0I-XN2C-3WPJ-FN0WLB3RHNDL-low.png Figure 6-3 Curve-Fit Chart
GUID-20230213-SS0I-LPLV-3SPT-RWCHMH4BQGVX-low.png Figure 6-4 Error of Hall Sensor Output in Demo