Printing robot system for labeling on the moving steel plate
This paper presents a Cartesian robot system for labeling on the moving steel plate. The heavy steel plate moves on the conveyor line with irregular speed and position. For the quality of print result, ink head has not to move along the steel plate precisely but to measure the exact position and angle of the moving plate. These two problems along with system integration are the main issues for the automation of labeling process. In this paper, configuration of the robot system, the function of each component and the methodologies of control are discussed.
A study on train management system characteristic in Korea tilting train
The main transformer of the train is the equipment that receives the AC 25 KV power from the trolley wire and transforms it to an adequate voltage that can be used by the traction control system of the train. The primary winding side is the trolley wire voltage; the secondary winding side is the load side that supplies power to the main motor through the traction control system (Converter/ Inverter); the third winding side is the load side that supplies power to SIV that provides the service units of the train with power, which includes loads such as train air conditioning and ventilators, composed of multiple winding transformer. The main circuit system of the secondary winding is 2 parallel and 1 serial. Mcp 1 car and M cars have one traction control system which has 2 sets of converter/inverter to which the main transformer supplies power.
Robust solutions of inverse problems in electromagnetic non-destructive evaluation
Non-destructive testing (NDT) is the application of physical measurement technology based on energy interaction with the material and its nonconformities. The material's response is sensed by transducers and sensors which?in most cases?scan the component and document the results in inspection images. However, NDT measures a physically defined quantity or even an intrinsic property. The difference between non-destructive evaluation (NDE) and NDT is in the interpretation of the inspection data. NDE has to discuss the inspection results in terms of quality elements and characteristics which are relevant to describe the fitness of the material for use. In the case of macroscopic defects these are the kind of defect (cracklike, globular) and its size and orientation to the main stress directions; in the case of material property determination the parameters are mainly mechanical properties. Therefore, in NDE one has to solve inverse problems. The solution of inverse problems based on mathematical procedures such as integral equations is a strong developing discipline and most of the articles prepared for this special issue of the journal have the objective of discussing the latest state of the art in that field. However, practical NDE needs robust and quick solutions which are to be applied mainly online. Therefore, we present here inversion procedures based on multiple linear regression algorithms applied to inspection data. We describe the calibration procedure to fit the free parameters of the model functions and give examples of practical applications in industry.