DC_MOTOR_MODEL.CIR * V_AMP 1 0 AC 1 PWL(0MS 0V 1MS 10V 1000MS 10V 1010MS 0V 2000MS 0V) * * MOTOR VOLTAGE RA 1 2 0.5 LA 2 3 0.0015 H_EMF 3 4 VSENSE2 0.05 VSENSE1 4 0 DC 0V * * MOTOR TORQUE BASED ON INERTIA AND FRICTION H_TORQ 6 0 VSENSE1 0.05 LJ 6 7 0.00025 RB 7 8 0.0001 VSENSE2 8 0 DC 0V * * MOTOR POSITION FPOS 0 11 VSENSE2 1 CPOS 11 0 1 RPOS 11 0 1MEG * * ANALYSIS .TRAN 10MS 2000MS * * VIEW RESULTS .PRINT TRAN V(1) I(VSENSE1) .PROBE .END