1、Chapter 3 Kinematic Analysis of Mechanisms 3.1 Tasks and Methods of Kinematic Analysis,(a)Position:to determine whether all links will interfere(干涉) with each other,to find locus(轨迹)(b)Velocity: to calculate the stored kinetic energy(动能) or power(功率) P. (c ) Acc.：To calculate the dynamic（动态的） forces
2、,3.1.1 Tasks: to find position、velocity、and acceleration(加速度) of driven links according to input parameters(参数) of driving link(s) and kinematics dimensions (尺寸)of all links.,3.1.2 Methods：,（1）Graphical method(图解法),（2）Analytical(解析的) method,（3）Experimental(实验) method*,(a) Geometrical(几何学的) method fo
3、r position,(b) Instant(瞬时的) centre method for velocity*,(c) Vector(矢量) equation method*,(a) Closed-loop method*,(b) Assur group method,All kinematics dimensions(LAD、LAB、LBC、LDC、LDE、CDE、LEF) are known. Draw the kinematic diagram of the mechanism when 1=80.,(1)Locate A and D according to LAD.,(2)Locat
4、e B according to LAB and 1,(3)Draw two arcs with the points B and D as the centres and LBC and LDC as the radii(半径复数). The intersection(交点) of the two arcs is point C.,(4) Locate point E according to LDE and CDE.,(5)Draw an arc with the point E as the centre and LEF as the radius(半径). The intersection of the arc and the horizontal pathway(导路) is point F.,
