SRM Linear Model Custom Device

Requires: Electric Motor Simulation Toolkit

After creating an Electric Motor Simulation custom device, you can use the Custom Device Configuration page to view or configure the device. This custom device simulates a switched reluctance motor (SRM) using the linear model function. Visit ni.com/info and enter the Info Code ex7s7w for more information about configuring the device.

• Custom Device Settings
  • Name—Specifies the name of the custom device. After you change the name of the custom device, the device name in the configuration tree gets updated.
  • Description—Provides a description for the custom device. You can enter customized descriptions in this field.
• SRM Linear Model Settings
  • SRM Parameters—Specifies the parameters describing the linear model of an SRM.
    • Number of Phases—Specifies the number of phases in an electric motor. The Number of Phases must be 3, 4, or 5.
    • Number of Poles—Specifies the number of poles in the electric motor. The Number of Poles must be an even number.
    • Initial Rotor Position—Specifies the mechanical rotor position, in degrees, when the motor starts.
    • Rotor Position Offset—Specifies the angle, in degrees, between the rotor salient pole and the stator salient pole when the rotor position is 0.
    • Unaligned Inductance—Specifies the equivalent inductance, in henries, of the coil at the unaligned position. The value of Unaligned Inductance must be greater than 0.
    • Aligned Flux—Specifies the flux, in webers, of the Saturated Position Current at the aligned position. The value of Aligned Flux must be greater than 0.
    • Saturated Position Current—Specifies the current, in amperes, of the coil at the saturated position. The value of Saturated Position Current must be greater than 0.
    • Maximum Current—Specifies the maximum current in amperes. The value of Maximum Current must be greater than 0.
  • Mechanical Parameters—Specifies the mechanical parameters of the electric motor. The mechanical parameters impact the forces and movement of the motor.
    • Inertia—Specifies the moment of inertia, in kgm^2, of the electric motor. The value of Inertia must be equal to or greater than 0.
    • Friction Coefficient—Specifies the friction coefficient of the electric motor. The value of Friction Coefficient must be equal to or greater than 0.
  • dt—Specifies the time interval, in seconds, at which VeriStand simulates the electric motor. The value of dt must be greater than 0. The default value is 8E-7.
  • DC Voltage—Specifies the voltage, in volts, of the direct current (DC) to apply to the inverter in the electric motor. The value of DC Voltage must be greater than 0.
  • Resistance—Specifies the resistance, in ohms, of the electric motor. The value of Resistance must be greater than 0.
• Hardware Settings
  • RIO Device—Displays the address to the RIO device.
  • FPGA Bitfile—Displays the path to the FPGA bitfile.
  • Reset—Resets the hardware. Click Reset to reconfigure the RIO device and FPGA bitfile in the Configure FPGA dialog box.

Related Information

Creating and Configuring Custom Devices

Configure FPGA Dialog Box