Three-Axis Motion Simulator AC3380-TC
The AC3380-TC 3-Axis Motion Simulator has three degrees-of-freedom. The middle gimbal (Pitch Axis) and inner gimbal (Roll Axis) are closed frames offering high torsional stiffness. The inner gimbal has mounting surfaces with an M8 hole pattern to fasten the payload adapters. A temperature chamber with gas cooling and electric heating is fastened to the middle axis gimbal. Large removable doors allow access to the UUT. The chamber can be specified with either LN2 (TCN) or CO2 (TCC) cooling. CO2 coolant is not cold in the pipes and can pass through tubes in the slipring shaft and enter the system through the pitch axis gimbal, whereas LN2 requires insulated piping and a rotary joint suspended from a gantry above the simulator.
Slipring assemblies in all axes provide electrical access to the Unit Under Test (UUT). Signal lines have four brush contacts per ring to avoid micro interruptions, which could corrupt digital signals. A wide variety of slipring capsule designs and wiring schematics are optionally available.

Unit Under Test (UUT)
Mass (max) 100 kg
Mass (nominal) 60 kg
Maximum envelope 600 mm cube
Sliprings to UUT Signal 90 ways, 2 A @ 150VDC
Power 10 ways, 20 A @ 400VAC
(custom options available)

Specifications
Angular freedom Inner Axis
continuous
Middle Axis
continuous
Middle Axis
continuous
Position
Accuracy
Command resolution
Repeatability

1.0 arc sec RSS
0.00001 deg
< 1 arc sec

1.0 arc sec RSS
0.00001 deg
< 1 arc sec

1.0 arc sec RSS
0.00001 deg
< 1 arc sec
Rate
Range
Stability
-over 360 deg
-over 10 deg
-over 1 deg
Command resolution
± 600 deg/sec*

0.0001%
0.005%
0.05%
± 0.0001 deg/sec
± 400 deg/sec*

0.0001%
0.005%
0.05%
± 0.0001 deg/sec
± 200 deg/sec*

0.0001%
0.005%
0.05%
± 0.0001 deg/sec
Dynamic
Small signal bandwidth
(No load)
Acceleration
(Nominal load)
60 Hz -3dB Gain

2'500 deg/sec2
15 Hz -3dB Gain

600 deg/sec2
20 Hz -3dB Gain

600 deg/sec2
Mechanical
Wobble
Orthogonality

2 arc sec
4 arc sec

4 arc sec
4 arc sec
3 arc sec
*Extended Rate Range Possible

Major Simulator Dimensions (nominal)
Simulator height (max) 2'500 mm
Turn radius outer axis 2'500 mm
Base dia. 1'010 mm

Major Simulator Dimensions (nominal)

Coolant CO2 Cooling (TCC) LN2 Cooling (TCN)
Range -40 to +85°C -40 to +85°C
Stability +/-1°C +/-1°C
Gradients -3°C/min
+6°C/min
-5°C/min
+6°C/min

Major Simulator Dimensions (nominal)
Real time digital interfaces; VMIC or SCRAMNet
GPS, RF or gas rotary joints
Custom slipring & rotary joint configurations
Custom performance parameters
Increased/ rate/acceleration
Custom UUT mounting arrangements and fixtures
The specifications identified in this data sheet are representative of standard systems. To satisfy customer specific requirements
ACUTRONIC is able to design systems with specifications that are increased or decreased relative to standard systems.