Practice of CDIO in Course of DC Motor Drive and Control System

DC Motor Drive and Control System is a primary course for the major of Electrical Engineering and Automation. This course involves many basic major courses such as Electric Machine, Automatic Control Theory, Power Electronics, Micro-computer Control Theory, and Principle of Detection and Conversion, thus it is a quite comprehensive and practical engineering course. Therefore, it is feasible to introduce the CDIO teaching mode into this course. Based on the detailed analysis and revision of teaching syllabus and content, we present a project-based instruction plan of Design and Experiment of DC PWM Speed Adjusting System with Hybrid Converter. The motor and main circuits are provided by teachers. Students are responsible for the design, experiment and verification of power supply, control system and drive system. The major knowledge of this course together with other learned courses is sufficient to complete the project. This plan will help students to improve their hands-on skills, integrate their comprehensive professional knowledge, stimulate students’ motivations to use more professional, more advanced design methods and apply them in the project Students are divided into groups to perform the tasks as followed. Firstly, the project application report including research theories, content, research goals, key subject problems, research plan and feasible analysis. The working base and condition, brief introduction of team members, and funds budget are also included in the application. Secondly, research report need to be completed, which includes regulator design results, supply and protect system design, drawings of all the designs, system simulation and PPT for final answer. Regulator design results are composed of steady and dynamic structure diagram, steady and dynamic function norm analysis, regulator structure selection and parameter calculation, and verification. Supply and protect system design are composed of power supply design, control supply design, operation system design and protect system design. Finally, manufacturing and function test. This part includes schematic diagram and PCB design, welding of hardware circuit, and function test and competition. The score of each student is given by teachers according to the implementation level, research report and attendance. The attendance should be checked strictly during the course. Students should join the project research on time. Absence without reason and early quit are forbidden. Extra score will be given to the outstanding student. According to the basic step of CDIO, students carried out the project design and experiment, and finally accomplished scheduled tasks by means of test and answer. Through this practice of CDIO, students will obtain important experience on hands-on skills, global thinking and teamwork spirit. Compared with the classes without CDIO, excellent rates and passing rates are all obviously higher in final examination.

Proceedings of the 11th International CDIO Conference, Chengdu, China, June 8-11 2015