Research on the positioning control of induction motor

Asynchronous machine positioning for asynchronous motor in the accurate parking problems in the process of operation.Used in the automatic production line.For example: parking in the spindle of high-speed machine tools,because the tool and spindle attaches a convex part of the fixed role,when the motor static,in order to electrical motor smoothly remove cutting tools,and switch to the next tool,bumps on the requirements of spindle always stopped at a fixed location,so that the cutting tool installation smoothly.In the 1970 s to the mid - www.facebook.com/guohong.trading 80 - s,dc electric control system,and the dominant in the 80 s,due to the control theory and method have a breakthrough,make ac motor control gets rapid development,gradually occupied the dominant position.


Research on the positioning control of ac motor has experienced a long stage,the traditional approach is to asynchronous motor use mechanical stop to locate.At present,in the way of positioning used in various industries can be divided into four kinds: mechanical positioning,electric,air,optical positioning.And positioned by way of the electrical control system,and now only Germany has the actual product in the world,in the domestic blank.Because electric positioning control system based on digital general way of working,so high efficiency electric motor can improve the accuracy,is very simple,easy and computer,PLC and other control circuit matching,multiple CNC machine or industrial robot used for the automatic positioning mechanism,scope of application is wide.