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
Another parameter to tune while doing IdRated identification is the delta increments for this current. If this value is too high for a particular motor, a remaining oscillation will be present even when doing IdRated identification for a long period. For example, Figure 7-32 shows the current when the following parameter is used.
//! \brief Defines the IdRated delta to use during estimation
//!
#define USER_IDRATED_DELTA (0.0001)
As can be seen in the oscilloscope plot, even though the current grows much faster, the remaining oscillation does not allow the Id Rated to settle to a stable value. Trying a smaller value, 0.00002 instead of 0.0001 increases the stability of the steady state current as shown in Figure 7-33.