P_N = 12 kW

U_N = 220 V

I_N = 62 A

n_{N =} 1880 $\frac{\text{obr}}{\min}$

R_N = 0,01 Ω

L_N = 200 mU

I = 0,9 kg * m²

T_m = 5 + 0,028 n (n w $\frac{\text{obr}}{\min}$)

R_r = 1 Ω

U_N = i (R_N + R_r) + L_N * $\frac{\text{di}}{\text{dt}}$ + ceiΩ

I $\frac{d\mathrm{\Omega}}{\text{dt}}$ = C_M * i^{2 _} T_m

$\frac{\text{di}}{\text{dt}}$ = $\frac{U - i\ \left( R + R_{\text{r\ }} \right) + \ ice\ *\ \mathrm{\Omega}}{L}$

$\frac{\text{dΩ}}{\text{dt}}$ = $\frac{C_{M}*\ i^{2} - \ T_{M}}{I}$

C_E =$\frac{E_{N}}{I_{N}*\ n_{N}}$ = $\frac{U_{N} - \ I_{N}*\ R_{N}}{I_{N}*\ n_{N}}$ = $\frac{220 - 62*0,01}{62*1880}$ = 0,00188

M_N = 9,55 * $\frac{P_{N}}{n_{N}}$ = 9,55 * $\frac{12*\ 10^{3}}{1880}$ = 60,9 Nm

M_N = C_M * I_N² => C_M = $\frac{M_{N}}{{I_{N}}^{2}}$ = 0,0158