Question

what is the difference between kinematics analysis and kinematics synthesis.​

Answer 1

Having the concept and definition of mechanisms and machines, composed of mechanisms explained, now the discussion for design of mechanisms and machines by combining those mechanisms becomes imperative.

The design of mechanisms has two aspects, analysis and synthesis of mechanisms.

Analysis

This is consisted of techniques of determining the positions, velocities and accelerations of certain points on the members of mechanisms. The angular positions, velocities and accelerations of the members of mechanisms are also determined during analysis of mechanisms. By analysis of mechanisms the trajectory of particular points and the orientation of the members at particular points of time are obtained.

Synthesis of Mechanisms:

If the desired set of positions/angular positions, velocities/angular velocities and acceleration/angular acceleration at definite points of time are stipulated. Then the synthesis of mechanisms comprises of mathematically determining the geometry of members of mechanisms such as to produce the desired results. When that mechanism is operated it will pass through the stipulated points with the required velocity and acceleration, and the members will have the desired orientation.

Answer 2

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⇋Kinematic gait analysis is the study of the motion of the body, limbs, and joints that occurs during movement. This method of analysis provides a non-invasive means of collecting objective information on joint and limb motion from patients.

⇋Kinematic synthesis, also known as mechanism synthesis, determines the size and configuration of mechanisms that shape the flow of power through a mechanical system, or machine, to achieve a desired performance.