基于DSP和SPWM细分控制技术的电罗经的研究  

Study on Electric-compass that Based on the DSP and SPWM Micro-step Driving Technology

作　　者：喻增盛[1] 

机构地区：[1]集美大学轮机工程学院,福建厦门361021

出　　处：《船海工程》2008年第2期138-141,共4页Ship & Ocean Engineering

摘　　要：结合低速同步电机的驱动特点,将一种全数字式SPWM波细分驱动技术及DSP控制技术应用到船舶电罗经复示器的电机控制系统中,实现一种新型的全数字式步进电机控制系统。采用LF2407A DSP微控制器为控制器件,L298N双全桥驱动芯片为功率驱动器件。试验表明,该技术的应用研究达到预定精度要求,并有效的减小电机低频振动,降低噪声,提高了系统的可靠性。This paper proposes a new implementation of fully digitized micro-step for stepper motor by sine pulse width method, using the experience of low-speed synchronous motor＇s driving technology. Drawing upon these technologies and also the integrated DSP control method, a novel motor controlled strategy for electric- compass reviewer is propounded. We develop a DSP-based digital control system for a two-phase hybrid stepper motor that is mainly constructed from a TMS320LF2407A DSP which is used as the core of control part and a dual full-bridge driver L298N which is used as a driving part. The reliability and stepper accuracy of this new control system are tested. The results show that the system can effectively satisfy the fixed position accu racy of expected request, represses movement noise and mechanical vibration.

关 键 词：数字信号处理器 正弦脉宽调制 步进电机 电罗经复示器 

分 类 号：U666.151[交通运输工程—船舶及航道工程]