一种高功率密度电机驱动器的设计实现  

Design and Implementation of High Power Density Motor Drive

作　　者：张允志[1] 曹为理[1] 韩瑜[1] 

机构地区：[1]江苏自动化研究所,江苏连云港222006

出　　处：《微电机》2017年第7期88-92,共5页Micromotors

基　　金：国家863计划<大型造船多分段全自主焊接双臂机器人的关键技术与装备>(2015AA043102);2016年江苏省重点研发计划(产业前瞻与共性关键技术)<工业机器人核心部件伺服驱动器及控制系统集成优化技术研究>(SBE2016000275)

摘　　要：针对车载驱动领域对低压小体积大电流电机驱动器的实际需求,设计实现了基于TI的TMS320F2812为主控单元,以增量式编码器、小阻值大功率采样电阻为电机速度及电流采集单元,以低压小封装大电流MOSFET为功率驱动单元的低压高功率密度电机驱动器。详细介绍硬件设计方案,通过高密度PCB设计及相关结构工艺设计,并配合相关的速度嵌套分段控制及参数检测程序,提高了驱动器的集成度及可靠性。以额定电流为20A的直流伺服电机为测试电机,测试表明:系统运行稳态精度较高,加载响应稳定可靠。Based on the demand of low-voltage, small-size and high-current motor drive in the vehicle- mounted servo system, the low-voltage and high power density motor drive, which used TMS320F2812 of TI as the control unit, incremental encoder and small-value, high-power sensor resistor as motor speed and cur- rent acquisition unit, low-voltage and high power density MOSFET as driving unit, was designed and imple- mented. The hardware of driving system was introduced in details, and then the designs of high-density PCB, structure and technology, with relevant speed control of nested segment and parameters testing proce- dures, were employed to improve the driver integration and reliability. A DC servo motor with a rated current of 20 amps was used as a test motor. The experimental results indicate that the driving system has the advan- tages of high steady-state accuracy and stable load response.

关 键 词：高功率密度 TMS320F2812 高密度PCB设计 直流伺服电机 

分 类 号：TP272[自动化与计算机技术—检测技术与自动化装置]