+44 (0)1403 755800
+44 (0)1403 755810
Heason Technology Supplies 24 kNm Custom-built Frameless Torque Motor
Date: 21 May 2009
Frameless rotor/stator brushless torque motor selected for QinetiQ Towed Array Handling System (TAHS)
Heason Technology supplies 24 kNm
custom-built frameless torque motor for direct-drive submarine
winch application.
Heason Technology Ltd has worked in partnership with USA motion
specialists Allied Motion Inc, to deliver 700 mm diameter brushless
and frameless torque motors for UK defence manufacturer QinetiQ as
an integral part of its Towed Array Handling System (TAHS). With a
separate rotor and stator design delivering a continuous stall
torque of almost 7 kNm and maximum torque approaching 24 kNm, the
custom built Megaflux series motor directly drives
a large winch used to deploy sonar array systems equipment on
submarines.
QinetiQ's Winfrith based Underwater Systems business has
successfully developed an electrical drive solution for TAHS over
traditional hydraulic drives to maintain improved control, high
reliability, flexibility in installation, and reduced through-life
cost. TAHS has been designed to fulfil the needs of many of the
world's navies for compact, robust and effective solutions that
minimise impact on other onboard systems, as space on any submarine
is always at a premium.
Megaflux series thin ring brushless servo motors are designed for
direct-drive applications where smooth and precise control of large
inertia or high torque loads is of prime importance. The design
features minimal cogging torque and is characterised by a
space-saving form factor with a large diameter-to-length ratio that
allows the motor to be directly integrated on the driven shaft,
eliminating the problems of torsional resonance due to flexible
couplings and backlash associated with gear driven systems.
The customisation for the TAHS application involved increasing the
stator and rotor length to a nominal 150 mm to gain an increased
torque density. The motor characteristics were also modified to
maintain voltage, torque and other critical mechanical and winding
constants that best matched QinetiQ's servo drive
specification.
The large through-hole in the Megaflux design also helped the
customer to maintain a compact design, accommodating electrical
cabling and other services such as slip ring assemblies within the
space restricted application.
The standard Megaflux range covers eight frame sizes and over forty
models with diameter-to-length ratios from 150 mm x 30 mm to 760 mm
x 123 mm, covering continuous stall torque from just 3 Nm to over
2000 Nm.
The Megaflux thin-ring motor range is available from Heason as a
separate component or can be supplied as a part of a complete
system with commutation and positioning encoders, servo drives and
motion controls. The motor is also available in a fully housed
version and, through Heason's motion systems design service, can
also be assembled on customer supplied components or built into
complete positioning actuator solutions.
Please click
here if you require any further information on this press
release.