开放式PLC程序设计在项目教学中的应用

摘要

In this paper, an exam question - the starting and stopping operation of 5 electric machines - in the 2004 national electric engineering competition has been discussed . Based on the controlling logic, arithmometer and comparing instruction, and shift circulation instruction, how to help students develop their divergent thinking and difference seeking thinking ability with the approach of several-solutions-to-one-question in the subject of Electric Control and PLC Programming have also been proposed. Moreover, the example shown that the methodology can highlight the creativity of students in the course of their comprehensive competence development.%本文以2004年全国电工大赛PLC实操题“控制五台电机的启停”为例，通过基于基本控制逻辑、计数器和比较指令、移位循环指令三种实现方法，阐述在“电气控制与PLC编程课程”中如何以一题多解的方式让学生进行发散性思维、求异性思维，实现在综合职业能力培养的基础上，突出创新能力教育的目标。