Optimized Design of SoC-based Control System for Multi-axis Drive

Qiang Gu,Jiajiang Sun,Panqing Niu,Yesong Li

doi:10.5755/j01.eee.20.7.4848

Qiang Gu, Jiajiang Sun + Show 2 more

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https://doi.org/10.5755/j01.eee.20.7.4848

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Abstract

This study presents an optimized system-on-chip (SoC) based multi-axis control system for permanent magnet synchronous motor (PMSM). The multi-axis control system becomes considerably complex with increasing controlled axes and complicated control algorithms. This paper aims to provide a balanced design considering control performance, hardware constrains and feasibility. To cope with this problem, the system design is optimized by using pipeline and time division multiplexing technology. Due to the optimized architecture and the computation capability of SoC, the performance of the whole system can be preserved. To demonstrate this, a SoC implementation of the control system is presented and comprehensively analyzed. Herein, the vector control in the current loop is explained and an anti-windup proportional-integral (PI) controller is adopted in the speed loop. The sampling frequencies of the current loop and the speed loop are 16 KHz and 4 KHz respectively. Consequently, the execution time is several microseconds with reasonable consumed resources. Experimental results are shown to prove the efficiency of the proposed SoC-based solution. DOI: http://dx.doi.org/10.5755/j01.eee.20.7.4848

Highlights

For the fast progress of very large scale integration (VLSI) and electronic design automation (EDA), system-on-chip (SoC) technology is getting widely used due to its efficiency in term of control performance, cost, power consumption and development time in industrial control systems
In the field of motor drives, such as permanent magnet synchronous motor (PMSM) [1]–[3] and brushless DC motor (BLDC) [4], [5] drives which have widely used in industrial control systems, the SoC-based solution is more efficient than the digital signal processor (DSP) based solution [6]–[8]
The experimental results are plotted by Matlab software

Summary

Introduction

For the fast progress of very large scale integration (VLSI) and electronic design automation (EDA), system-on-chip (SoC) technology is getting widely used due to its efficiency in term of control performance, cost, power consumption and development time in industrial control systems. The main advantages of SoC-based solution are the shorter execution time than fully software-solution and the less complicated development than fully hardware-solution. In the field of motor drives, such as permanent magnet synchronous motor (PMSM) [1]–[3] and brushless DC motor (BLDC) [4], [5] drives which have widely used in industrial control systems, the SoC-based solution is more efficient than the digital signal processor (DSP) based solution [6]–[8]. In order to reduce system cost and power consumption, the hardware/software co-design methodology has created an opportunity to make optimal SoC designs for increasingly sophisticated control systems [9], [10].

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