tailieunhanh - Advanced Strategies For Robot Manipulators Part 5

Tham khảo tài liệu 'advanced strategies for robot manipulators part 5', kỹ thuật - công nghệ, cơ khí - chế tạo máy phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | Kinematics Synthesis of a New Generation of Rapid Linear Actuators for High Velocity Robotics with Improved Performance Based on Parallel Architecture 111 analyzed. Chapter 3 is dedicated to the kinematics analysis of several promising alternatives based on the four-bar mechanism. Then chapter four investigates the selected performance criterias. This paper closes on a design chapter where prototypes are shown with motion analysis in terms of position velocity and acceleration. 2. Kinematics topology synthesis Firstly in this section we shall make a review of some interesting planar mechanisms which can perform the specified set of functionnal requirements. In this case the tasks shall be to achieve straight-line motion. Background study We need two definitions related to degree-of-freedoms. The DOF of the space is defined as the number of independant parameters to define the position of a rigid body in that space identified as Ả. The DOF of a kinematic pair is defined as the number of independant parameters that is required to determine the relative position of one rigid body with respect to the other connected rigid body through the kinematic pair. The term mechanism is defined as a group of rigid bodies or links connected together to transmit force and motion. Mobility and kinematics analyses are possible under some assumptions Ideal mechanisms with rigid bodies reducing the mechanism motion to the geometric domain. Elastic deformations are neglected Joint clearance and backlash are insignificant Functionnal requirements Historically the need for straight-line motion has resulted on linkages based on closed loops or so-called parallel topology. The idea is to convert rotation motion into translations or straight-line motions. It is usually considered that prismatic pairs are much harder to build than revolute joints Soylemez 1999 . Prismatic actuators as well as slides have the following problems the side reactions of prismatic pairs produce friction .

TỪ KHÓA LIÊN QUAN
crossorigin="anonymous">
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.