Online Implementation of Servo Controllers Using Bit-Streams

Abstract

The present study proposes an alternate strategy for implementing controllers based on bit-streams. The key to the success of bit-stream controllers is their ability to represent continuous time signals using uniformly weighted binary streams. These can easily be manipulated using standard logic gates available on a FPGA and therefore offers significant advantages in real time implementation. The performance of the bit-stream controllers have been demonstrated considering an example of a D.C. servo mechanism. Results of the experiment shows that bit-stream implementation can offer a viable alternative for constructing controllers for systems with several dimensions.