Variable Reluctance VR Sensor

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Variable Reluctance (VR) Sensor
Ansofts Electromechanical System Simulator
(EMSS) and the simulation of VR sensors
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Step 1 Set up Nominal Problem

• The nominal problem is set up in Maxwell 2D
• Constraints are assigned to vary the coil
  current, wheel rotation gap between the pole
  and the wheel

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Step 2 Set up Parametric Table

• Through the interface, max and min values are set
  for parameters that have been assigned
  constraints
• Once the user defines the number of increments
  for each constraint, the 2D Parametrics module
  sets up the parametric table defining all static
  problems to be solved

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Step 3 View Parametric Results

• The 2D Parametrics module allows the user to view
  solutions for multiple static solutions
  simultaneously and with respect to one another
• The parametric solutions serve as a look-up table
  to be exported as an equivalent-circuit model to
  Maxwell Spice or Simplorer where the system
  drive-circuitry and mechanical dynamics are set
  up for transient analysis

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Step 4 Equivalent Circuit Export

• The EMSS interface provides the user with a
  simple, GUI-driven method of exporting the
  parametric results as an equivalent circuit model

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Step 4 Black Box Circuit Model
Electrical Side
Mechanical Side
Torque Terminal
Positive Coil Terminal
Gap Terminal
Negative Coil Terminal
Angle Terminal

• The black box circuit model is a representation
  of the results of all the set-ups defined by the
  parametric table

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Step 5 Define the Schematic
Mechanical Inertia
VR Sensor Equivalent Circuit Model
Gap Control (optional)
Load Resistor
Mechanical Torque
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Step 5 View the Results
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Step 5 View the Results
EMSS is ACCURATE!
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Step 5 View the Results
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Step 5 View the Results
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Conclusion
EMSS is a package that

• Combines the accuracy of the finite element
  method with the speed of Maxwell Spice and
  Simplorer
• Produces extremely accurate solutions for
  electromechanical systems like VR sensors
• Can only be acquired from Ansoft!