DQ0 Analysis Guide

Get a technical guide to using DQ0 analysis for advanced motor-control validation. Learn how oscilloscope-based measurements can reveal control behavior, simplify troubleshooting, and help engineers validate BLDC and PMSM designs.
Nov. 11, 2026

Direct quadrature zero (dq0) parameters are important variables in field-oriented control algorithms. These key parameters typically exist deep within the control systems, but during design optimization and debugging it is advantageous to make these parameters available for measurement in real time, and to correlate their values with other measurements such as torque output.

Previously, motor drive and inverter designers who needed to correlate dq0 parameters with torque used custom built software and hardware to measure these parameters. This custom approach introduces significant complexity and expense. 

Tektronix has developed an alternative method for measuring dq0 components and the resultant drive vector for rotary sensor-based and sensorless systems.  

Learn more about this method and how to measure dq0 components in real time, correlate them with torque output, and use oscilloscope-based insight to simplify troubleshooting and validate BLDC and PMSM designs.