Study Of Ring Linear Motor Direct Drive Control System Used In Roller Coaster

With the improvement of living standards, the quality of recreational demands higher .The roller coaster is the recreational facilities that are necessary for large playground. Traditional roller coaster wide area, the high cost of the launch is not controllable. In order to pursue the roller coaster the efficiency and the strong irritating quality, the people continuously are seeking a better structure and the launch technology. This article proposed one kind of new structure and the launch technology ring-like roller coaster permanent magnetism brushless the direct current straight line motor-driven the ring-like roller coaster. The article mainly study the roller coaster launch technology and the ring-like straight line brushless the direct current machine the design and the control technology.The principal elements are as follows :The article first consulted and summarized the straight line electrical machinery characteristic as well as function in the transportation application, obtained that the brushless direct current straight line electrical machinery is suit to actuate the roller coaster theconclusion.In explaining ring linear brushless DC motor based on the basic structure and principles. Ring design based on ring linear brushless DC motor driven roller coaster of the structure and section power supply.In explaining the basic principles of infinite element method based on using ANSYSsoftware to ring DC linear motors modeling, analysis of the magnetic field distribution and thrust. Followed by the establishment of a ring linear brushless DC motor linear mathematical model.PID algorithm is the most widely used and most mature industries algorithm. In the PID operation, the output has the possibility to surpass thescope, moreover differentiator to deviation sudden change is very sensitive, and easy to create the control performance the instability, this article uses the advanced version PID algorithm - to meet limit weaken the integration and differential equation.The control system of the roller coaster with DSPTM320LF2407, introduces double closed-loop (velocity loop and current loop) control, the speed control circuit design, the current detection circuit, the motor electrical power supply circuit. and has compiled complete software, then unified the hardware to carry on the debugging, initially has realized the electrical machinery change phase operation and the electrical machinery subsection control strategy.