说明：  美国国家仪器公司（简称NI）提供了在LabVIEW中使用的PID控制工具包，可帮助工程师结合NI数据采集设备快速有效地搭建一个数字PID控制器，精确可靠地完成系统需求。
(National Instruments Corporation (referred NI) provides for use in LabVIEW PID Control Toolkit to help engineers with NI data acquisition devices quickly and efficiently build a digital PID controller, accurate and reliable complete system requirements.)