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智能电机控制:连接、人工智能和软件开发

智能电机控制:连接、人工智能和软件开发

电机控制集成电路(IC)和电机驱动是工业4.0框架下实施智能制造的关键要素。现代工业应用中常见的需求是高效电机解决方案。全球约50%的能源消耗来自电动机,因此即使是中等效率的提升也能带来显著的经济效益,帮助减少碳足迹。

工业电机引入了国际效率标准,如IE3(高效)和IE4(超高效),以减少能源消耗。截至2023年7月,欧盟法规要求功率在75kW至200kW之间的三相感应电动机必须遵守IE4效率标准。

除了更高效之外,现代工业电机解决方案还必须智能且互联。“智能设备”配备了复杂的功能。它们能够识别异常现象,如过热或电压浪涌,并自动做出响应。机器学习等人工智能技术的引入将这一功能提升到新高度,实现预测性维护并减少工厂停机时间。

连接是工业4.0领域中电机解决方案的另一个关键需求。该功能使设备能够实时交换数据,支持预测性维护、能效提升和远程控制。利用工业物联网,电动机可以将运行数据发送到云系统。这有助于减少停机时间,并促进生产流程的持续改进。此外,技术人员可以远程访问性能数据,减少现场检查需求,加快排查速度。

在工业4.0应用中,电机驱动器通常采用通信协议,如EtherCAT、Profinet和以太网/IP,以与其它驱动器、传感器或监控工业网络的系统交换实时数据。通常可以交换的数据包括扭矩、速度、温度和振动。当数据在边缘或云端远程处理时,预测性维护模型能够提供有价值的电机运行洞见,帮助在故障发生前发现潜在故障。

目前,直接安装在电机或工业机器上的驱动单元变得非常普遍。这些设备包括嵌入式控制器和通信接口,降低了布线复杂度,并能实现机器快速重新配置以满足不同的生产需求。瑞萨电子公司的RA8T2 MCU针对工业电机控制进行了优化。RA8T2基于1 GHz Arm Cortex-M85处理器(双核版本可选250MHz Arm Cortex-M33处理器),专为需要实时性能和高速通信接口的工业电机控制应用设计。该器件集成了14通道PWM计时器用于电机控制、不同类型的存储器(包括低延迟和高速TCM存储器)以及模拟功能。该器件系列还提供带DMA的双通道千兆以太网MAC和可选的EtherCAT从属控制器,支持工业领域的同步网络通讯

将AI/ML整合进电机控制系统,为研究电机在正常运行时的行为提供了宝贵解决方案,有助于提前预防异常或可能的故障。意法半导体的STSPIN32G4-ACT参考设计是一款先进的系统封装,结合了基于Arm Cortex-M4核心和CORDIC数学加速器的STM32G431 MCU,以及三相门极驱动器。该架构专门为控制BLDC/永磁同步电机设计,提供处理磁场定向控制(FOC)算法以及本地数据分析任务(边缘人工智能)所需的计算能力。配套的FP-IND-MCAI1软件提供了一个用于状态监测和预测性维护的实现示例。其收集来自内部传感器(电流和电压)及外部传感器(振动和温度)的数据,用于供预训练机器学习模型。利用ST的NanoEdge AI Studio工具,可以生成优化的库,直接运行在芯片上,使驱动器能够“学习”电机的正常行为,并实时检测异常(如机械不平衡或轴承故障)

英飞凌科技公司最近扩展了其ModusToolbox电机套件,新增了一个硬件抽象的电机控制核心库,涵盖了先进算法如FOC和梯形控制,多种启动方法,包括转子校准和六脉冲注入用于初始位置检测,以及SVPWM调制方案。集成的图形用户界面(GUI)提供了配置器和测试平台,能够自动检测已连接的评估板;一个数字示波器,可同时监控最多八个固件变量;一种用于自动提取电阻、电感和惯性参数的电极参数自动识别软件;以及用于闭环优化的PID调谐器。

Power Integrations去年发布了MotorXpert v3.0,这是一套为其BridgeSwitch电机驱动IC开发的套件。它增加了无分流和无传感器的FOC支持,采用两相调制方案,在高温环境中将逆变器切换损耗降低33%,波形可视化工具也提升了五倍。代码库采用MISRA-C编写,且不依赖MCU,涵盖30W至750W的应用。

未来的电机驱动控制基于互联和人工智能,并采用基于GUI的软件开发极大加快了高效驱控开发的速度的并扩展了边界。控制芯片开发商们正在边缘设备中堆砌越来越多的算力和高速通讯能力,开发者们需要充分挖掘并应用才能开发出差异化的产品。

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  1. CONNECT:[ UseTime:0.000682s ] mysql:host=127.0.0.1;port=3306;dbname=wenku;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.000861s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.000331s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.000290s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.000578s ]
  6. SELECT * FROM `set` [ RunTime:0.000229s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.000587s ]
  8. SELECT * FROM `article` WHERE `id` = 535824 LIMIT 1 [ RunTime:0.000840s ]
  9. UPDATE `article` SET `lasttime` = 1776596640 WHERE `id` = 535824 [ RunTime:0.001422s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 64 LIMIT 1 [ RunTime:0.000286s ]
  11. SELECT * FROM `article` WHERE `id` < 535824 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.000693s ]
  12. SELECT * FROM `article` WHERE `id` > 535824 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.000492s ]
  13. SELECT * FROM `article` WHERE `id` < 535824 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.001196s ]
  14. SELECT * FROM `article` WHERE `id` < 535824 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.000965s ]
  15. SELECT * FROM `article` WHERE `id` < 535824 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.001372s ]
0.088289s