ETAS ES5340.2, User Manual

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ES5340.2 Electric Drive Simulation Board - User’s Guide 57
ETAS FPGA Models
4.1.3 Mechanical System – Parameters, Inputs and Outputs
This section provides the description of all parameters, inputs and outputs of the
"Mechanical system" part of the model.
Properties of the Mechanical Model
The mechanical model has the following properties:
• Simulation of angle and angular velocity of the rotor and the electrical
field
• Resulting mechanical torque
Parameters
The parameters of the mechanical system model are configured in LABCAR-RTC
in the "Globals" tab of the item for the FPGA model.
Tab. 4-7 Parameters of the mechanical model
Inputs
You can connect the inputs of the mechanical model to other models (in the
Connection Manager of LABCAR-IP) or stimulate them in the Signal Center in
LABCAR-EE.
Tab. 4-8 Inputs of the mechanical model
Parameter [unit] Description Default
value
f [Nms] Coefficient of friction of the electric
motor 1.7
J_E [kgm
2
] Moment of inertia of the rotor 0.12
J_L [kgm
2
] Moment of inertia of the load
(powertrain etc.) 0.10
C [Nm/rad] Torsional stiffness ("spring constant")
of the "spring" between rotor and
load. 1500000
D [Nms/rad] Damping of the "spring" between
rotor and load. 100
Phi_mech_init [°] Initial mechanical angle 0.0
Omega_mech_init [1/s] Initial mechanical speed 0.0
Input [unit] Description Default
value
T_L [Nm] Load moment