Research On Scanning Path Planning And Scanning Time Optimizing In Ultrasonic Detecting System For Complex Components

Complex Components are applied vastly in industrial products. It is practical to detectdefects in their production process efficiently and accurately because they are possible tocause inner defects.In this paper, path planning methods for various complex components were proposedaccording to their outside features and parameters. What’s more, a method for time optimizingwas put forward. It is inefficient when zero points sensors were used in detecting process. Sozero points sensors were eliminated in this paper. Then method of zero consistency judgementwas applied to match zero points. Thus detecting time was optimized.The given component was separated to different parts according to its differentmorphological structures. For every part, calculate the moving amounts in different axesrespectively and make up the moving paths of adjacent sections. Then analyze the detectingpaths of interactions of parts and parts themselves. In this way, a path planning method wasobtained.Methods of zeros consistency judgement was based on inherent period of the componentitself which caused by ellipticity in its uniform rotating process. Mechanical vibration andparts’rough surface gave rise to noise of different frequency to the period signals. So waveletmulti-resolution analysis was utilized to reduce noise and then period signals were extracted.Cross correlation Function and Hilbert Transformation were used to judge zero pointsconsistency, then zero points were matched according to offsets. Compared the results of zeropoints matching method and mechanical zero detecting method, it was verified that zeropoints matching method was effective.By means of planning components’paths and optimizing detecting time, it can be concluded that this optimized system can detect precise positions, eliminate the dependence ofzero points sensors and increase average detecting efficiency by 35%.