Thank you Francois, this gives me a lot to think about! I really appreciate your feedback.
Colin On Wed, Apr 1, 2015 at 12:50 PM, Francois Dion <francois.d...@gmail.com> wrote: > On Wed, Apr 1, 2015 at 11:01 AM, Colin Ross <colin.ross....@gmail.com> > wrote: > >> Hi Francois, >> >> Thank you for the fast reply! I am looking to control a brushless servo >> motor ( >> http://www.aerotech.com/product-catalog/motors/rotary-motors/bms-series.aspx) >> that drives a rotary stage. >> > > These motors are not controlled by serial, you'll need a brushless > controller. In turn the controller might be or not serial, or ip or > something else altogether (PWM is typical). They do have an rs-422 > connection, but that is for a feedback signal. So you are building a > feedback control system. If you google that and python you'll find several > useful references, including a design and analysis module (but not control): > > https://pypi.python.org/pypi/control/0.6.6 > http://sourceforge.net/projects/python-control/ > > Nothing out of the box for your application, obviously. Also, the motor > control itself will depend on the microprocessor hardware you are using and > the motor controller. Assuming PWM, the raspberry pi has a software PWM > module in Python. Same with micropython. Anything else is pretty much DIY. > > As for the overall concept of control systems, Chapter 9 of "Real World > Instrumentation" ( http://shop.oreilly.com/product/9780596809577.do ) > will give you an overview of what is involved (with some python example, > but not directly applicable to your system). > > Francois > -- > raspberry-python.blogspot.com - www.pyptug.org - www.3DFutureTech.info > <http://www.3dfuturetech.info/> - @f_dion > _______________________________________________ Tutor maillist - Tutor@python.org To unsubscribe or change subscription options: https://mail.python.org/mailman/listinfo/tutor
