SPRUHJ1I January 2013 – October 2021 TMS320F2802-Q1 , TMS320F28026-Q1 , TMS320F28026F , TMS320F28027-Q1 , TMS320F28027F , TMS320F28027F-Q1 , TMS320F28052-Q1 , TMS320F28052F , TMS320F28052F-Q1 , TMS320F28052M , TMS320F28052M-Q1 , TMS320F28054-Q1 , TMS320F28054F , TMS320F28054F-Q1 , TMS320F28054M , TMS320F28054M-Q1 , TMS320F2806-Q1 , TMS320F28062-Q1 , TMS320F28062F , TMS320F28062F-Q1 , TMS320F28068F , TMS320F28068M , TMS320F28069-Q1 , TMS320F28069F , TMS320F28069F-Q1 , TMS320F28069M , TMS320F28069M-Q1
InstaSPIN-MOTION presents numerous advantages in achieving optimal performance for your application. Traditional PI position control requires three cascaded control loops — one for current, one for speed, and one for position — while SpinTAC Position Control requires two loops — one for current and one combined position-velocity loop (see Table 13-4). Because of these cascaded control loops, the PI controllers for velocity and position require at least four tuning parameters, all of which need to be tuned for each operating point in the application.
Control Loop | Traditional PI Control | SpinTAC Position Control |
---|---|---|
Current | Automatically identified during parameter identification | Automatically identified during parameter identification |
Velocity | Suggested starting values are provided, but require adjustments and testing to validate. Calculations are provided in Section 12.5. | Tuned via a single parameter and is effective across the operating range. Single parameter tunes position and speed, and is effective across the operating range. |
Position | No suggested starting values. No calculations provided. |
SpinTAC Position Control helps you achieve optimal performance by offering single parameter tuning for both position and velocity. Having a single tuning parameter allows you to quickly zero in on the right tuning settings for your application. The Active Disturbance Rejection Control (ADRC) at the core of SpinTAC Position Control allows that single tuning parameter to work across a very wide operating range. SpinTAC Position Control reduces the time and complexity required to optimize your application.
To compare the differences between SpinTAC Position Control and a traditional PI control system, the Teknic M2310PLN04K motor (available in the TI eStore) was coupled with a Magtrol HD-400 dynamometer. The PI tuning parameters determined from the example tuning in Section 12.5 were used as a starting point. In order to tune the position PI regulator, the velocity PI regulator had to be re-tuned. This was an iterative process. Each time the velocity gains were modified, the impact on the position gains was evaluated.
SpinTAC Position Control was tuned experimentally by the method outlined in Section 13.5. Prior to tuning SpinTAC Position Control, the system inertia was identified by the procedure outlined in Lab 05c.