TAILIEUCHUNG - Parallel Manipulators New Developments Part 2

Tham khảo tài liệu 'parallel manipulators new developments part 2', kỹ thuật - công nghệ, cơ khí - chế tạo máy phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | 2 Application of Neural Networks to Modeling and Control of Parallel Manipulators Ahmet Akbas Marmara University Turkey 1. Introduction There are mainly two types of the manipulators serial manipulators and parallel manipulators. The serial manipulators are open-ended structures consisting of several links connected in series. Such a manipulator can be operated effectively in the whole volume of its working space. However as the actuator in the base has to carry and move the whole manipulator with its links and actuators it is very difficult to realize very fast and highly accurate motions by using such manipulators. As a consequence there arise the problems of bad stiffness and reduced accuracy. Unlike serial manipulators their counterparts parallel manipulators are composed of multiple closed-loop chains driving the end-effector collectively in a parallel structure. They can take a large variety of form. However most common form of the parallel manipulators is known as platform manipulators having architecture similar to that of flight simulators in which two special links can be distinguished namely the base and moving platform. They have better positioning accuracy higher stiffness and higher load capacity since the overall load on the system is distributed among the actuators. The most important advantage of parallel manipulators is certainly the possibility of keeping all their actuators fixed to base. Consequently the moving mass can be much higher and this type of manipulators can perform fast movements. However contrary to this situation their working spaces are considerably small limiting the full exploitation of these predominant features Angeles 2007 . Furthermore for the fast and accurate movements of parallel manipulators it is required a perfect control of the actuators. To minimize the tracking errors dynamical forces need to be compensated by the controller. In order to perform a precise compensation the parameters of the manipulator s dynamic .

TỪ KHÓA LIÊN QUAN
TAILIEUCHUNG - Chia sẻ tài liệu không giới hạn
Địa chỉ : 444 Hoang Hoa Tham, Hanoi, Viet Nam
Website : tailieuchung.com
Email : tailieuchung20@gmail.com
Tailieuchung.com là thư viện tài liệu trực tuyến, nơi chia sẽ trao đổi hàng triệu tài liệu như luận văn đồ án, sách, giáo trình, đề thi.
Chúng tôi không chịu trách nhiệm liên quan đến các vấn đề bản quyền nội dung tài liệu được thành viên tự nguyện đăng tải lên, nếu phát hiện thấy tài liệu xấu hoặc tài liệu có bản quyền xin hãy email cho chúng tôi.
Đã phát hiện trình chặn quảng cáo AdBlock
Trang web này phụ thuộc vào doanh thu từ số lần hiển thị quảng cáo để tồn tại. Vui lòng tắt trình chặn quảng cáo của bạn hoặc tạm dừng tính năng chặn quảng cáo cho trang web này.