Aimed at solving the problem of mold damage caused by a foreign body in the mold before mold clamping, this paper proposes a solution, which applies image processing technology such as background updating and the difference image algorithm to solve it. Not only can it judge whether there is a foreign body in the mold but it can also detect whether the product is perfect by comparing the foreground image with the background image at the appropriate time (before mold clamping or after mold opening) and by calculating the qualified rate of pixel in all ROIs (Region of Interest). To eliminate the influence of vibration and of changes in brightness in the surrounding environment on the detecting results, this paper utilizes near infrared illumination technology and the background updating algorithm. In addition, the ROI is set to improve the detecting speed and accuracy.
This paper proposal an apparatus and processing steps to realize 3d laser marking onto the target's surface directly. A camera is attached to an ordinary inner engraver and laser source is multiple used for measuring and manufacturing respectively. Through steps successively including Camera Calibration, 3D Measuring, Surface Reconstruction, Image Ditching, Texture Mapping, Computer Aid Design (CAD), Computer Aid Manufacture (CAM) Calculation and Computer Numeric Control (CNC) Control, an inner engraver can become a 3D marking machine in a manner which is both novel and cheap.
This paper presents an innovative motion planning algorithm for pick and place operations in the industry. The new technique is to seek optimal dynamics pattern for PKM(parallel kinematic manipulator), this is achieved by two parts: First, to achieve optimal path planning, a center sphere method based on virtual obstacle path planning method is proposed to solve such path planning with Particle Swarm Optimization (PSO); Second, to enhance the efficiency of the robot, time optimal trajectory planning is finished with respect to robotic physical constraints. Then, the method applied to a 4-DOF PKM is tested by numerical simulations, some examples are presented making comparisons on same tasks assigned by different sphere radius, the simulation results show the efficiency and the effectiveness of the proposed approach to determine the optimal motion pattern for 4-DOF PKM in obstacle-free workspace.
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