L12_A
Fig 3.23 Torque Production in the Cylindrical Machine
 
L12_B
Example 3.6
Conditions for Constant Torque
Fig 3.24,25
Developed diagram of stator and rotor mmf's

L12_C
達到固定紐力的三種可能狀況
Commutator Action

L12_D

達到固定紐力的三種可能狀況

Commutator Action