View Single Post
  #5   Spotlight this post!  
Unread 18-01-2014, 22:48
Joe Ross's Avatar Unsung FIRST Hero
Joe Ross Joe Ross is offline
Registered User
FRC #0330 (Beachbots)
Team Role: Engineer
 
Join Date: Jun 2001
Rookie Year: 1997
Location: Los Angeles, CA
Posts: 8,569
Joe Ross has a reputation beyond reputeJoe Ross has a reputation beyond reputeJoe Ross has a reputation beyond reputeJoe Ross has a reputation beyond reputeJoe Ross has a reputation beyond reputeJoe Ross has a reputation beyond reputeJoe Ross has a reputation beyond reputeJoe Ross has a reputation beyond reputeJoe Ross has a reputation beyond reputeJoe Ross has a reputation beyond reputeJoe Ross has a reputation beyond repute
Re: Disadvantages to CAN?

Quote:
Originally Posted by zbrozek View Post
Ah, the undervoltage is something I didn't consider. How good is the current-mode controller? Presumably it's cycle-by-cycle at the PWM rate...? I hope to run current control mode, so with any luck the motors won't draw more than 40A each even in stall.
The Jaguars closed loop modes (including current control) are performed at 1000hz. This is faster then possible when using PWM input (200hz), but slower then the h-bridge pulse rate (15,000hz).
Reply With Quote