Research Article

Extended and Unscented Kalman Filtering Applied to a Flexible-Joint Robot with Jerk Estimation

Table 2

Simulation data for 5-bar linkage.

ParametersNominal values (in SI units)

Joint stiffness 𝐾 1 = 1 0 0 , 𝐾 2 = 2 0 0
Friction constant 𝐵 1 = 0 . 1 , 𝐵 2 = 0 . 1 5
Gravity coefficient 𝑔 = 9 . 8
Inertia 𝐼 1 = 1 , 𝐼 2 = 2 , 𝐼 3 = 1 , 𝐼 4 = 2
Motor inertia 𝐽 1 = 1 , 𝐽 2 = 1 . 5
Gear ratio 𝑟 𝑚 1 = 5 0 , 𝑟 𝑚 2 = 5 0
Input torques 𝜏 1 = 2 , 𝜏 2 = 5