using feedback register for mcpwm

[lpcware]

Content originally posted in LPCWare by praveenb on Wed Mar 11 03:32:38 MST 2015
HI anyone knows about using feedback register of MCPWM, i am not getting how to use please help

[lpcware]

Content originally posted in LPCWare by praveenb on Sat Mar 14 02:08:26 MST 2015


Hi Thanks for replaying

That coder is for DC motor, but i need for AC motor

i am using MCPWM to generate signal having 90 degree phase shift in AC mode, to check the signal either it is +ve and -ve direction, i used the QEI module to check the direction, it showing direction and phase error,to remove that error what have to do?,i thought feedback register can solve that problem

I generated the signal as given in the Fig 130.Quadrature Encoder Basic Operation of UM10360
i am using only 2 signal Pha and Phb

[lpcware]

Content originally posted in LPCWare by praveenb on Fri Mar 13 22:22:15 MST 2015
Hi Thanks for replaying

That coder is for DC motor, but i need for AC motor

i am using MCPWM to generate signal having 90 degree phase shift in AC mode, to check the signal either it is +ve and -ve direction, i used the QEI module to check the direction, it showing direction and phase error,to remove that error what have to do?,i thought feedback register can solve that problem

I generated the signal as given in the Fig 130.Quadrature Encoder Basic Operation of UM10360
i am using only 2 signal Pha and Phb

[lpcware]

Content originally posted in LPCWare by embd02161991 on Thu Mar 12 12:37:07 MST 2015
Hi Praveen,

There is an Application note on using Motor control in LPC17xx.
http://www.lpcware.com/content/nxpfile/an10898-bldc-motor-control-lpc1700

Thanks,
NXp Technical Support