Table 5 Constrains under working operation.

From: Development and performance evaluation of a PTO-based power assist system to improve traction force for electric tractors

Powertrain configurations

Working operation

Mode

Motors

Speed-coupling type of DCMP

\(\:mode\in\:\left[1\right]\)

\(\:\begin{array}{c}{\omega\:}_{main\_min,k}\le\:{\omega\:}_{main,k}\le\:{\omega\:}_{main\_max,k}\\\:{T}_{main\_min,k}\le\:{T}_{main,k}\le\:{T}_{main\_max,k}\\\:{\omega\:}_{aux\_min,k}\le\:{\omega\:}_{aux,k}\le\:{\omega\:}_{aux\_max,k}\\\:{T}_{aux\_min,k}\le\:{T}_{aux,k}\le\:{T}_{aux\_max,k}\end{array}\)

Speed-coupling type of DCMP with power assist system

\(\:mode\in\:\left[1\:2\right]\)

\(\:\begin{array}{c}{\omega\:}_{main\_min,k}\le\:{\omega\:}_{main,k}\le\:{\omega\:}_{main\_max,k}\\\:{T}_{main\_min,k}\le\:{T}_{main,k}\le\:{T}_{main\_max,k}\\\:{\omega\:}_{aux\_min,k}\le\:{\omega\:}_{aux,k}\le\:{\omega\:}_{aux\_max,k}\\\:{T}_{aux\_min,k}\le\:{T}_{aux,k}\le\:{T}_{aux\_max,k}\\\:{\omega\:}_{assist\_min,k}\le\:{\omega\:}_{assist,k}\le\:{\omega\:}_{assist\_max,k}\\\:{T}_{assist\_min,k}\le\:{T}_{assist,k}\le\:{T}_{assist\_max,k}\end{array}\)

Mixed-coupling type of DCMP with power assist system