INTEGRATED DESIGN AND ANALYSIS FOR A （综合设计和分析）.pdfVIP

INTEGRATED DESIGN AND ANALYSIS FOR A TREBUCHET USING A HIGH SPEED PHOTOGRAPHIC MEASUREMENT SYSTEM AND MATLAB 1 2 3 Richard Kenefic , Feng Lin , David Aschliman 1 Raytheon, Ft. Wayne IN: Richard_J_Kenefic@R 2 ,3Indiana Institute of Technology, Ft. Wayne IN: FLin@, DAschliman@ . 1. ABSTRACT We are expanding the scope of a freshman trebuchet design project to incorporate measurement and analysis for freshman and sophomores in the engineering curriculum. Students in our freshman level engineering design course have designed, built, and tested a trebuchet as part of the requirements for the class for many years. In the fall 2005 semester the operation of several trebuchets in the distance 1 competition were recorded using a high speed photographic measurement system on a laptop computer. These photographs were then analyzed by students in our freshman level programming class using Matlab to determine the arm and sling positions at several instants in time in their analysis co-ordinate system. The students in our sophomore level dynamics course also analyze the trebuchet as part of the requirements for that course. We plan to introduce a comparison between measured and predicted arm and sling positions in subsequent semesters of dynamics.