From: <[email protected]> Reply-To: "[email protected]" <[email protected]> Date: Tuesday, June 17, 2014 at 11:08 PM To: "[email protected]" <[email protected]> Subject: Re: [beagleboard] Re: help regarding BLDC motor interfacing with beagleboneblack
> Actually my project involved Beaglebone B and I have completed other features > on it. BTW, I need to control 4 BLDC motors and I need atleast 24 PWM channels > for this. So make a C2000 cape. Use I2C or SPI to communicate between the BBB and the C2000 controller. Timing on the PWM is way more accurate than the other devices that have been suggested. Regards, John > > > On Wednesday, 18 June 2014 09:48:55 UTC+5:30, john3909 wrote: >> >> From: <[email protected] <javascript:> > >> Reply-To: "[email protected] <javascript:> " >> <[email protected] <javascript:> > >> Date: Tuesday, June 17, 2014 at 8:50 PM >> To: "[email protected] <javascript:> " <[email protected] >> <javascript:> > >> Cc: <[email protected] <javascript:> > >> Subject: [beagleboard] Re: help regarding BLDC motor interfacing with >> beagleboneblack >> >>> All ICs I found, have fixed frequency with variable duty cycle. I think >>> programmable frequency with variable duty cycle is must to drive BLDC motor. >>> Is that right? >>> Can you please suggest one IC. >> If you want to control BLDC motor, why not use C2000 controller. It is low >> cost and specifically designed for this purpose. >> >> http://www.ti.com/lsds/ti/microcontroller/32-bit_c2000/c28x_piccolo/overview. >> page >> http://www.ti.com/lsds/ti/apps/motor/applications.page >> >> Regards, >> John >>> >>> >>> >>> On Wednesday, 18 June 2014 01:25:39 UTC+5:30, jmelson wrote: >>>> >>>> >>>> On Tuesday, June 17, 2014 5:14:00 AM UTC-5, [email protected] wrote: >>>>> Hi jmelson ! >>>>> I am making my own cape. >>>>> I have found one PWM controller (TLC59116) from TI >>>>> http://www.ti.com/lit/ds/symlink/tlc59116.pdf >>>>> but it says individual channels are adjustable but with a fixed frequency >>>>> of 97 khz. Would that be enough or adjustable frequency is a must feature >>>>> for BLDC motor. >>>>> >>>>> >>>> 97 KHz may work for some motor drive setups, but that frequency may be so >>>> high that the power transistors or driver circuits will >>>> run hot. You'd have to look at specific power stages to decide whether 97 >>>> KHz is suitable or not. Most motor drives run between >>>> 20 and 50 KHz. >>>> >>>> Jon >>> >>> -- >>> For more options, visit http://beagleboard.org/discuss >>> --- >>> You received this message because you are subscribed to the Google Groups >>> "BeagleBoard" group. >>> To unsubscribe from this group and stop receiving emails from it, send an >>> email to [email protected] <javascript:> . >>> For more options, visit https://groups.google.com/d/optout. > > -- > For more options, visit http://beagleboard.org/discuss > --- > You received this message because you are subscribed to the Google Groups > "BeagleBoard" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > For more options, visit https://groups.google.com/d/optout. -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups "BeagleBoard" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/d/optout.
