3. Optics

3.Optics

3.4 Servosystems Specifications

Azimuth drive		Unity	Value
Kinematics	Angular travel	(°)	540
	Angular velocity	(°/sec)	0.85
	Angular acceleration	(°/sec²)	0.40
Configuration	Number of wheels	(-)	16
	Driving wheels	(-)	8
	Drives per wheel	(-)	2
Track	Diameter	(m)	40.063

Tab. 3.1 : Azimuth drive

Elevation drive		Unity	Value
Kinematics	Angular travel	(°)	5÷90
	Angular velocity	(°/sec)	0.50
	Angular acceleration	(°/sec²)	0.25

Tab. 3.2 : Elevation drive

Gregorian feed positioner		Unity	Value
Kinematics	Angular travel	(°)	340
	Angular velocity	(°/sec)	3.50
	Angular acceleration	(°/sec²)	1.75
	Feed positioning time	(sec)	*11÷84*

Tab. 3.3 : Gregorian feeds positioner (rotating turrett)

Primary focus positioner		Unity	Value
Kinematics	Angular travel	(°)	78
	Angular velocity	(°/sec)	0.40
	Angular acceleration	(°/sec²)	0.20
	Feed positioning time	(sec)	*190*

Tab. 3.4 : Primary focus positioner

Primary focus feed positioner		Unity	Value
Kinematics	Linear travel	(mm)	3000
	Linear velocity	(mm/sec)	25
	Linear acceleration	(mm/sec²)	10
	Feed positioning time	(sec)	40÷120

Tab. 3.5 : Primary focus feeds positioner, transverse axis

Primary focus feed positioner z axis		Unity	Value
Kinematics	Linear travel	(mm)	270
	Linear velocity	(mm/sec)	5
	Linear acceleration	(mm/sec²)	5
	Feed positioning time	(sec)	42

Tab. 3.6 : Primary focus feeds positioner, z axis

BWG M3 rotator		Unity	Value
Kinematics	Angular travel	(°)	360
	Angular velocity	(°/sec)	3
	Angular acceleration	(°/sec²)	1.5
	Feed positioning time	(sec)	*30÷90*

Tab. 3.7 : BWG central mirror positioner

Sub-reflector		Unity	Value
Kinematics	Linear travel x axis	(mm)	280
	Linear travel y axis	(mm)	280
	Linear travel z axis	(mm)	280
	Angular travel x axis	(°)	±5
	Angular travel y axis	(°)	±5
	Linear velocity	(mm/sec)	11.8
	Angular velocity	(°/sec)	0.4

Tab. 3.8 : Sub-reflector kinematics

Previous - Index - Next