New Circuit

Components used

SPICE netlist

* **************************************************
* Generated from CircuitSim Schematic
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X_M1 N1 N2 NC_3 NC_2 NC_4 NC_1 DCMEXT_e54ab535 Ke=3m Kt=3m B=1u Ra=0.2 La=100u J=100u IcOmega=0 IcTheta=0
xQ1 N2 N4 0 IRF1404ZIRF_3a210cad
V_U1 N4 0 PULSE(0 5 0 1n 1n {50*0.01/20K} {1/20K})
V_V1 N1 0 dc 12 ac 0 0 distof1 0 0 distof2 0 0

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* Models and supporting definitions follow
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.subckt DCMEXT_e54ab535 V+ V- omega torque theta_out Ea_out params: La=100u Ra=0.2 Ke=3m Kt=3m J=100u B=1u IcOmega=0 IcTheta=0

    **Rotor (or armature)**
    R1 V+ 2 {Ra}
    L1 2 Ea {La}
    Ebackemf Ea V- Value ={v(omega)*Ke}

    **Mechanical side
    Gtorque 0 omega_ value = {I(Ebackemf)*Kt}
    Vtorquesense omega_ omega 0
    CIntertia omega 0 {J}
    .ic v(omega)={IcOmega}
    Rfriction omega 0 {1/B}

    **Measurements
    EtorqueSignal torque 0 value={I(Vtorquesense)}
    Gtheta 0 theta omega 0 1
    Ctheta theta 0 1
    .ic v(theta)={IcTheta}

    Etheta theta_out 0 value={v(theta)}
    Ea_out Ea_out 0 value={V(Ea,V-)}

.ends
.subckt IRF1404ZIRF_3a210cad D G S
    XADAPTER D G S IRF1404ZIRF_3a210cad_SOURCE
.ENDS IRF1404ZIRF_3a210cad
.MODEL IRF1404ZIRF_3a210cad_MM NMOS LEVEL=1 IS=1e-32
+VTO=4.39121 LAMBDA=0.0223341 KP=70.5077
+CGSO=3.85062e-05 CGDO=7.17299e-08
.MODEL IRF1404ZIRF_3a210cad_MD D IS=2.49464e-12 RS=0.00151721 N=0.968715 BV=40
+IBV=0.00025 EG=1.2 XTI=1 TT=2.00002e-05
+CJO=2.9256e-09 VJ=0.50243 M=0.464178 FC=0.1
.MODEL IRF1404ZIRF_3a210cad_MD1 D IS=1e-32 N=50
+CJO=2.41644e-09 VJ=0.5 M=0.374827 FC=1e-08
.MODEL IRF1404ZIRF_3a210cad_MD2 D IS=1e-10 N=0.40016 RS=3e-06
.MODEL IRF1404ZIRF_3a210cad_MD3 D IS=1e-10 N=0.40016
.subckt IRF1404ZIRF_3a210cad_SOURCE 1 2 3
    * SPICE3 MODEL WITH THERMAL RC NETWORK
    **************************************
    * Model Generated by MODPEX *
    *Copyright(c) Symmetry Design Systems*
    * All Rights Reserved *
    * UNPUBLISHED LICENSED SOFTWARE *
    * Contains Proprietary Information *
    * Which is The Property of *
    * SYMMETRY OR ITS LICENSORS *
    *Commercial Use or Resale Restricted *
    * by Symmetry License Agreement *
    **************************************
    * Model generated on May 19, 03
    * MODEL FORMAT: SPICE3
    * Symmetry POWER MOS Model (Version 1.0)
    * External Node Designations
    * Node 1 -> Drain
    * Node 2 -> Gate
    * Node 3 -> Source
    M1 9 7 8 8 IRF1404ZIRF_3a210cad_MM L=100u W=100u
    RS 8 3 0.0001
    D1 3 1 IRF1404ZIRF_3a210cad_MD
    RDS 3 1 1e+06
    RD 9 1 0.0001
    RG 2 7 4.13439
    D2 4 5 IRF1404ZIRF_3a210cad_MD1
    * Default values used in MD1:
    * RS=0 EG=1.11 XTI=3.0 TT=0
    * BV=infinite IBV=1m
    D3 0 5 IRF1404ZIRF_3a210cad_MD2
    * Default values used in MD2:
    * EG=1.11 XTI=3.0 TT=0 CJO=0
    * BV=infinite IBV=1m
    RL 5 10 1
    FI2 7 9 VFI2 -1
    VFI2 4 0 0
    EV16 10 0 9 7 1
    CAP 11 10 3.99787e-09
    FI1 7 9 VFI1 -1
    VFI1 11 6 0
    RCAP 6 10 1
    D4 0 6 IRF1404ZIRF_3a210cad_MD3
    * Default values used in MD3:
    * EG=1.11 XTI=3.0 TT=0 CJO=0
    * RS=0 BV=infinite IBV=1m
.ENDS IRF1404ZIRF_3a210cad_SOURCE

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* Simulation settings
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.tran 20u 100m 0 20u
.end