Improvement of Automatic Control System for Drilling Machine of Swinging Arm Based on PLC
Xiaojun Wang · Coal Mine Machinery · 2008
Introduces how to practice improvement of automatic control system for drilling machine of swinging arm based on PLC technique,and to achieve the control of different operating velocity and direction through establishing different frequency for frequency transformer,which makes full use of resources,has economical and reasonable performance,is repaired easely,can reliably satisfy the control requirement.