Speed control system with synchronization algorithm for two cooperating BLDC motors

Abstract EN

Two-Cooperating Brushless DC Motors (BLDCM) motion accuracy has not been yet achieved to full satisfaction.

This paper presents a new technique with Synchronization Algorithm for Two-Cooperating Brushless DC Motors to achieve higher accuracy and to keep both motors synchronized all the time.

This new technique is developed for many applications such as: two-cooperating manipulators.

The new algorithm has been mathematically modelled based on Digital Signal Processing (DSP) and implemented using the Analog Devices Blackfin™ ADSP-BF561 dual core Digital Signal Processor (DSP) interfaced with external FPGA based design for two motors control using only one DSP processor.

Core 1 is used to implement the first motor speed control algorithm while core 2 is used to implement the second motor speed control algorithm.

Core 1 and core 2 with both speed control algorithms are synchronised using a new synchronization technique to have both motors working as one unit all the time.

The FPGA based design contains one PWM Generation Unit with two bumpers.

It is implemented using Verilog language and downloaded successfully to the XILINX Spartan FPGA chip.

Experimental results are achieved successfully and introduced in this paper.

The achieved results show that the suggested technique is robust and working as expected.

It keeps both BLDC motors have the same speed and synchronised all the time.