Naval Steering and Diving Control Actuation System (SDCAS)

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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Features

Literature

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

101-86-1-NAVAL-STEERING-AND-DIVING-CONTROL-ACTUATION-SYSTEM-(SDCAS)-grey-bckgrd-700x400.psd

Actuator Performance Summary

Features	Specifications
Stroke	± 30°
Stall Torque	>500 in-lbs.
No load speed	>20°/s
Loaded speed	>15°/s @ 300 in-lbs.
Rated power	0.012 HP
Peak motor current	0.7 A
Actuator weight	19 lbs.
Max braking torque (wave slap)	1000 ft-lbs.
Operating temperatures	28° - 85°F
Pressure rating	>5000 ft

101-87-1-NAVAL-STEERING-AND-DIVING-CONTROL-ACTUATION-SYSTEM-(SDCAS)-grey-bckgrd-700x400.psd

Controller Performance Summary

Features	Specifications
Supply voltage	8 – 300 VDC
Communications interface	Multiple options
Position feedback	Resolver, encoder, HED
Controller weight	~33 lbs.
Operating temperatures	28° – 85°F
Pressure rating	>5000 ft