Special purpose processor for parameter identification of CNC second order servo systems on a low-cost FPGA platform
The parameter identification process has an important role in servo systems tuning on computer numerical control (CNC) machine tools The parameter identification is mostly done off-line due to the high computational load carried by the identification algorithms. In this work, we present a novel hardware architecture for an application specific processor implementing the recursive least-squares algorithm for the on-line identification The developed processor is simulated and tested with the necessary elements to perform the CNC machine servo system control The system was implemented in a low-cost FPGA, getting a maximum sample frequency of 40 kSps. (C) 2009 Elsevier Ltd All rights reserved
parameter identification cnc fpga recursive least-square processor architecture