Active Surface Compensation for Large Radio Telescope Antennas

Table 8

Design parameters of Tianma actuators.

Weight	<13 kg
Height	<330 mm
Stroke	30 mm
Repositioning precision	0.015 mm
Axial load	300 kg (maximum is 1000 kg)
Radial load	150 kg (maximum is 700 kg)
Maximum speed	>0.36 mm/s
Operating temperature range	−10°C/60°C
Service life	20 years