Optimetrics Success Story Solenoid PullIn Force Optimization

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Optimetrics Success StorySolenoid Pull-In Force
Optimization
Objective Optimize pull-in force for given air
gap by varying pole and plunger radius. Coil OD
must remain constant.
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Optimetrics Success StorySolenoid Pull-In Force
Optimization
Options
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Nominal Design
Plunger

• Independent Variable
• Plunger radius
• Dependent Variables
• Pole OD
• Coil ID
• Excitation

Coil
Pole
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Maxwell 3D SolutionSet up separate
magnetostatic solutions
Efficient!
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Maxwell 3D SolutionProcess
Efficient!

• Each simulation produce results for one
  configuration
• Results are compiled and analyzed manually
• Each simulation replaces one build-and-test
  cycle
• User will identify the optimal design by choosing
  the best of the solutions

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More efficient!
Maxwell 3D ParametricsSet up multiple
magnetostatic solutions simultaneously
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More efficient!
Maxwell 3D ParametricsSet up multiple
magnetostatic solutions simultaneously
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More efficient!
Maxwell 3D ParametricsSet up multiple
magnetostatic solutions simultaneously

• Each simulation produces results for multiple
  configurations
• Parametric table results may be analyzed in
  post-processor
• Each simulation replaces multiple
  build-and-test cycles
• User will identify the optimal design by choosing
  the best of the solutions as displayed in the
  post-processor

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Most efficient!
Maxwell 3D OptimizationSet up cost function
using objective (max force) and independent
variable (plunger radius) as unknowns
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Most efficient!
Maxwell 3D Optimization
Optimization solution
Parametrics solution
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Most efficient!
Maxwell 3D Optimization

• Only one model must be set up
• Optimization table results may be analyzed in
  post-processor
• Each simulation replaces multiple
  build-and-test cycles
• Optimetrics finds optimal solution automatically
  using user-defined criteria (cost-function)
• Fewer solutions may be needed to achieve optimal
  solution!

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Summary

• Simulation offers actuator designers significant
  efficiencies over traditional build-and-test
  methods
• Ansofts simulation tools offer various levels of
  benefits to its users.