tailieunhanh - Industrial Robotics Theory Modelling and Control Part 14

Tham khảo tài liệu 'industrial robotics theory modelling and control part 14', kỹ thuật - công nghệ, cơ khí - chế tạo máy phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | Visual Conveyor tracking in High-speed Robotics Tasks 771 .finger _ shape G number shapeị sizei i 1 . p expresses the shape of the gripper in terms of its number p of fingers the shape and dimensions of each finger. Rectangular-shaped fingers are considered their size is given width and height . fingers _ location G O xci O yci O rz O i 1 . p indicates the relative location of each finger with respect to the object s centre of mass and minimum inertia axis MIA . At training time this description is created for the object s model and its updating will be performed at run time by the vision system for any recognized instance of the prototype. fingers _ viewing G pose _ context ị i 1 .p indicating the way how invisible fingers are to be treated fingers are invisible if they are outside the field of view. grip 1 . k are the k gripper-object Gs_m G O distinct grasping models a priori trained as possible alternatives to face at run time foreground context situations. A collision-free grasping transformation CF Gs_mi O will be selected at run time from one of the k grip parameters after checking that all pixels belonging to FG P_mi the projection of the gripper s fingerprints onto the image plane xvis yvis in the O -grasping location cover only background-coloured pixels. To provide a secure collision-free access to objects the following robotvision sequence must be executed 1. Training k sets of parameters of the multiple fingerprints model MFGP_m G O for G and object class O relative to the k learned grasping styles Cym. G O i 1 . k. 2. Installing the multiple fingerprint model MFGP_m G O defining the shape position and interpretation viewing of the robot gripper for clear-grip tests by including the model parameters in a data base available at run time. This must be done at the start of application programs prior to any image acquisition and object locating. 3. Automatically performing the clear-grip test whenever a prototype is recognized and located at run time and .

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