Tài liệu Enumeration of Kinematic Structures According to Function P2 doc

... are encouraged to refer to Gibsons [1] and Harary [2] for more detailed descriptions of the theory. 2.1 Definitions A graph consists of a set of vertices (points) together with a set of edges or ... 2 to the sum of the product i × L i . Hence,  i iL i = 2e. (2.7) Let v k denote the number of vertices of degree k, namely,v 2 denotes the number of vertices of degree two,...

Ngày tải lên: 17/12/2013, 13:15

... number of gear pairs is equal to the number of independent loops; the number of turning pairs is equal to the number of links diminished by one; and the number of degrees of freedom is equal to the ... graph of n vertices. However, some of the graphs may be rejected due to violation of the structural characteristics, whereas others may be isomorphic to one another....

Ngày tải lên: 17/12/2013, 13:15

... manipulators for which the number of limbs is equal to the number of degrees of freedom of the manipulator, and the total number of joint degrees of freedom in each limb is equal to the value of C k . The ... Japan.) kinematic structures of parallel manipulators according to their nature of motion and degrees of freedom. 9.2.3 Enumeration of Planar Parallel...

Ngày tải lên: 26/12/2013, 00:16

Ngày tải lên: 26/12/2013, 00:16

... the nature of connection among various links of a kinematic chain is called the structural analysis or topological analysis. To facilitate the analysis, several methods of repre- sentation of the kinematic ... Creation of Mechanisms According to Kinematic Structure and Function, Journal of Environmental and Planning B, 6, 375–391. [7] Freudenstein, F. and Yang, A.T.,...

Ngày tải lên: 17/12/2013, 13:15

... Symbol Number of vertices v Number of links n Number of edges e Number of joints j Number of vertices of degree iv i Number of links having i joints n i Degree of vertex id i Number of joints on ... Degrees of Freedom The degrees of freedom of a mechanism is perhaps the first concern in the study of kinematics and dynamics of mechanisms. The degrees of freedom of...

Ngày tải lên: 17/12/2013, 13:15

... housing. The torque converter has three purposes. First of all, it serves as a fluid coupling to provide a smooth transmission of torque from the engine to the wheels. It also allows a vehicle to stop ... we first identify the functional requirements. Then, we translate some of the requirements into structural characteristics for the purpose of enumeration of the kinematic...

Ngày tải lên: 26/12/2013, 00:16

... accomplished by a com- puter program using a nested-do loops algorithm to vary the value of each x i and check for the validity of the solutions. A more rigorous procedure for solving one linear ... first discuss a method for solving one equation in n unknowns. Then, we extend the method to solving a system of m equations in n unknowns. A.1 Solving One Equation in n Unknowns Consider...

Ngày tải lên: 26/12/2013, 00:16

... Independent Loops: Four to Eight Vertices. © 2001 by CRC Press LLC Appendix C Atlas of Graphs of Kinematic Chains This appendix provides an atlas of graphs of kinematic chains having up to three independent ... to three independent loops and eight links. Table C.1 Graphs Having One Independent Loop: Three to Eight Vertices. © 2001 by CRC Press LLC Table C.4 Graphs Having T...

Ngày tải lên: 26/12/2013, 00:16

... One-dof Eight-Bar Linkages: Part 3. © 2001 by CRC Press LLC Appendix D Atlas of Planar Bar Linkages This appendix provides an atlas of planar linkages classified according to the number of degrees ... CRC Press LLC Table D.2 Planar One-dof Six-Bar Linkages. Table D.3 Planar One-dof Eight-Bar Linkages: Part 1. © 2001 by CRC Press LLC Table D.10 Planar Two-dof Nine-Bar Linkages: Part 2...

Ngày tải lên: 26/12/2013, 00:16