Kinematic Analysis and Synthesis - MMW

Overview:

The mono-wiper is fundamentally constructed from 3 4-bar mechanisms linked in series. Our kinematic analysis consisted of vector loops for each 4 bar.

Calculations:

Mobility:

1 half joint (gear), all others full

DoF  = 3*9 - 3 - 2*11 - 1 = 1

We found that the wiper arm base rocker has a range of motion of 2.16 radians (124 degrees) for a full rotation of the input crank.

Simulation:

θ₂ is the input crank angle.

Monowiper simulation with magenta Coriolis arrow:

Input crank at 2 rad/s, 250 mm wiper length