tailieunhanh - Crc Press - Mechanical Engineering Handbook - Robotics 1 Part 10

Tham khảo tài liệu 'crc press - mechanical engineering handbook - robotics 1 part 10', kỹ thuật - công nghệ, cơ khí - chế tạo máy phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | 14-90 Section 14 Industrial Material Handling and Process Applications of Robots John M. Fitzgerald Replacing humans with robots to perform processes has often led to failure. The reason is that the robots are often mechanically capable of the manipulation while being incapable of process planning and control. Thousands of robot installations have failed because replacing the manual method with the automatic method lacked adaptability to process related variation. The human operators had been using their cognitive abilities to do the job. A vast majority of successful robot implementations past and present have a very important common aspect repeated execution of fixed programs with little or no on-line modification of path or position. Process robot planning and programming still usually require the efforts of highly skilled technicians. Often complex programs cost too much and take too long. Continuously controlling and varying path manipulation parameters for real-time process control is difficult. Many processes are not known well enough to describe their control algorithmically. In a few applications sensors are becoming more common for adapting robot plans to changes in the environment. Setup seam tracking positioning conveyor tracking and now automatic programming for painting and finishing are becoming practical as sensor costs and computation costs continue to decline. In this section robotic material handling and process applications are presented from an automation system perspective focusing on the robot s manipulation functions. Manipulation is considered a manufacturing material transformation and a transportation process factor. Programming and control are viewed as the means of integrating robot manipulation as part of the manufacturing process. The reader who is interested in a specific application is encouraged to first review the relevant process technology sections of this book. Implementation of Manufacturing Process Robots Manipulation .