Naval Steering and Diving Control Actuation System (SDCAS)

101-85-1-NAVAL-STEERING-AND-DIVING-CONTROL-ACTUATION-SYSTEM-(SDCAS)-grey-bckgrd-700x400.psd

The Steering and Diving Control Actuation System (SDCAS) controls the four (4) main control surfaces, or fins, of an unmanned underwater vehicle (UUV). The system receives digital commands over a serial bus (multiple protocols are available) and power from either AC or DC bus power. SDCAS drives each fin to the master controllers commanded position independently. The system also outputs various system monitor parameters, warnings, and faults. This includes motor temperatures, fin lock status, bus current and voltage, and communication status with each actuator.

 

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Key Actuator Features

  • Customizable output torque, slew angle, and speed 
  • BLDC motor provides highly reliable, acoustic sensitive actuation 
  • Failsafe options are customizable for specific applications 
  • Output shaft lock solenoids available 
  • Pressure compensated housings available for application specific depth requirements 
  • Multiple position feedback options available, including redundant options

Key Controller Features

  • Integrated power supply customizable for various input power 
  • Multiple fieldbus communication protocols available 
  • Position, velocity, or torque loop closure options 
  • Customizable switching frequencies and communication baud rate 
  • Customizable failsafe options for communications loss 
  • Multiple feedback device options available
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Actuator Performance Summary

 

FeaturesSpecifications
Stroke± 30° 
Stall Torque>500 in-lbs.
No load speed>20°/s
Loaded speed>15°/s @ 300 in-lbs.
Rated power0.012 HP
Peak motor current0.7 A
Actuator weight19 lbs. 
Max braking torque (wave slap)1000 ft-lbs.
Operating temperatures28° - 85°F
Pressure rating>5000 ft
101-87-1-NAVAL-STEERING-AND-DIVING-CONTROL-ACTUATION-SYSTEM-(SDCAS)-grey-bckgrd-700x400.psd

Controller Performance Summary

 

FeaturesSpecifications
Supply voltage8 – 300 VDC
Communications interfaceMultiple options
Position feedbackResolver, encoder, HED 
Controller weight~33 lbs.
Operating temperatures28° – 85°F 
Pressure rating>5000 ft