Precise units for the identified gMotorVars.Flux_VpHz
Hi ChrisI am having some contradictory expediences trying to interpret the parameter: gMotorVars.Flux_VpHz.Can you tell me what you understand the units of this parameter to be? In particular - I...
View Articlerelationship between rotor flux angle and Iq for IPM
Dear sir/madam, I read SPRUHP4.pdf, and see "Ideal Orientation: 90 degrees for non-salient synchronous; slightly more for salient machines, and slightly less in asynchronous machines since part of...
View ArticleResolution of FAST speed estimation
Hello,you can read "reliable and robust estimation of flux, angle, speed and torque across use conditions", "Best speed input into the control System", "high quality feedback signals", ...but is there...
View ArticleClik here to view.
Why speed and current PID controller use different algorithm?
Dear sir/madam, In InstaSpin lab, the speed PID controller is in parallel form, while the current PID controller is in series form. I don't know what cause them different. Best...
View ArticleCompute Back EMF
Dear Sirs, In manual spruhj1f, Page 411 Figure 11-19, Decoupled PI Controllers for a PMSM Vq = PID_q_out + id * ω * Ls + ω * KE ; I want to use “USER_MOTOR_RATED_FLUX * ω(rad/s) * 2 * 3.1415 “to...
View ArticleIs Instaspin proprietary?
Other Parts Discussed in Thread: INSTASPIN-BLDChello, I'm interested in sensorless BLDC control with an FPGA. (my project is restricted to use FPGAs instead of TI processors). In my searches, I found...
View ArticleUnderstanding the #define USER_ADC_FULL_SCALE_CURRENT_A (value) used in the...
Other Parts Discussed in Thread: DRV8301, MOTORWARE, TLV2781, BOOSTXL-DRV8301I am using just MotorWare v1.01.00.14 code. I am using both the DRV8301_69M_KIT and alternatively the LAUNCHXL_28069M kit...
View Articlerelationship between rotor flux, Ke, Kt
Dear Sir,From user manual(spruhj1f, Page 396), the rotor flux (which is also equal to the back-EMF constant (Ke) in SI units). Also,Mtr(s)=3/4*P*rotor flux; ??? since it is the transfer function...
View ArticleClik here to view.
how to set a ADC current offset for the other PIN
Other Parts Discussed in Thread: MOTORWAREIn my application,I need detect the bus current,so I add hall sensor on bus line.the1.65V±1.65V output signal PIN of hall sensor connects ADC-B5 PIN of...
View ArticleSpeed Limitation while using Torque Mode
Other Parts Discussed in Thread: MOTORWAREHello Guys,I am using MotorWare for a university project. We have an experimental electrical car, and want to use InstaSPIN for control. We have adapted the...
View ArticleClik here to view.
Phase current problem at motor high speed
Other Parts Discussed in Thread: DRV8301e2e.ti.com/.../23271.user.hHello guysI am using InstaSpin for E-mobility application; this soluction is running on C++ code, keeping the InstaSpin libraries in C...
View ArticleClik here to view.
How to control power generation in ACIM
Other Parts Discussed in Thread: MOTORWAREWe are testing a high current ACIM for use as a generator.This uses custom hardware controlled by a 28069 microcontroller.It uses an encoder for position...
View ArticleClik here to view.
Current Control Loop Tuning
Below I have attached two images. The first one our motor operating at 20A Iq. The second is the motor at 40A Iq. I'm sampling at 2 Mega Samples per second and then running the post op amp current...
View ArticleClik here to view.
Is it a wrong formula about input power
I found a post about power calculation: https://e2e.ti.com/support/microcontrollers/c2000/f/902/t/406263// Equations for input power float_t input_power_sf = _IQtoF(gAdcData.dcBus) * (float_t)(0.5 *...
View ArticleClik here to view.
How to handle voltage transitions at lower RPMs (850-1000RPM) using...
Other Parts Discussed in Thread: TMS320F28035, MOTORWAREHello,I am running into an issue where when external DC power (19V) is removed from the unit and the system transitions to internal battery power...
View ArticleClik here to view.
Teaching Your PI Controller to Behave (Part IX)
Dave Wilson, Motion Products Evangelist, Texas InstrumentsAt last! Let’s take what we have learned so far and see how it applies to Field Oriented Control (FOC) systems. Figure 1 shows a typical...
View ArticleClik here to view.
Teaching Your PI Controller to Behave (Part VI)
Dave Wilson, Motion Products Evangelist, Texas InstrumentsI am writing this particular blog installment while lying by a swimming pool in a resort on the Riviera Maya. There are lots of beautiful...
View ArticleClik here to view.
The Ten Commandments of Digital Control (Part 4)
Dave Wilson, Motion Products Evangelist, Texas InstrumentsThis week we are counting down the Ten Commandments of Digital Control, and we are only one day away from the NUMBER ONE Commandment. Before...
View ArticleOne Size Fits All
Other Parts Discussed in Post: INSTASPIN-BLDCDavid Wilson, Motion Products Evangelist, Texas InstrumentsI HATE flying! The "one size fits all" mentality of the airline industry drives me nuts! For...
View ArticleClik here to view.
So, Which PWM Technique is Best? (part 4)
Dave Wilson, Motion Products Evangelist, Texas InstrumentsSo, which PWM technique is best for your motor control application? Up to now we have investigated three different PWM techniques. Some could...
View Article
![ONEW – KAKERA -Unmei no Piece- – EP [iTunes Plus M4A]](http://is1-ssl.mzstatic.com/image/thumb/Music221/v4/d0/fb/86/d0fb86a5-ba60-4bea-41fb-7f54c125f518/VEATP-45908.jpg/296x296bb.webp)
/pic9814888.png)
