Helios3.0
The Helios family features a modular electronics and magnetic design allowing a scalable product line featuring both off-the-shelf and bespoke products to meet a wide range of requirements.
- 3Nm
Torque
- 48V DC
Voltage
- 920g
Weight
- 1000°/s
Speed
Helios4.0
With it’s optional hybrid fibre optic/copper slipring, Helios is ideal for pointing multiple sensors payloads and those applications that need the highest levels of agility and data throughput.
- 4Nm
Torque
- 48V DC
Voltage
- 1300g
Weight
- 720°/s
Speed
Helios Highlights
Discover the key features that differentiate Helios from our other Integrated Servo Drives.
Helios is available off the shelf in configurations of 3.0 or 4.0Nm of torque. Its modular design allows for bespoke configurations with higher or lower torque, rapidly meeting customers’ specific needs.
Helios Integrated Servo Drives are designed for accurate positioning of multi-sensor and larger payloads typically up to c. 15kg
An internal bore diameter of 25 mm with optional hybrid fibre optic/copper slipring allows multiple high bandwidth 10Gb transmission paths across the rotating joint in parallel to conventional power and data transfer.
Integrated multi-axis IMUs feed directly into the Servotorq control loop allowing users to enable mechanical stabilisation within the drive. Stabilisation benefits applications mounted on mobile platforms, where there is a requirement to compensate for the underlying platform motion.
In addition to standard Servotorq I2C control, Helios adds support for 1Mb CAN, providing all the standard Servotorq II capabilities over a robust and higher bandwidth communication path. CAN also allows situating drives at a distance from the controlling equipment.
Agility
Wide speed range, from 0.05°/s up to 1000°/s (0.8 mrads/s- 17.4rad/s), and acceleration up to 3500 rads/s² enables lightning fast response to dynamic conditions without compromising smooth motion. Essential in applications where, for example, agile switching between multiple positions or trying to maintain engagement with evasive targets is critical.
Silence
The unique Servotorq technology behind our Integrated Servo Drives delivers truly silent operation, without compromise to speed or accuracy, bringing benefits to situations where covert or unobtrusive operation is required.
Precision
Overview’s Integrated Servo Drives are designed from the ground up to deliver direct-drive, zero backlash, precision, with accuracy and repeatability levels of up to 0.0055° (96 x 10-6 rad) delivering precise positioning. Servotorq supports control of the first, second and third derivatives of position enabling exacting control and optimised motion.
Easy Integration
Using Integrated Servo Drives is quick and easy, requiring only two connections, one for power and one for control. To assist users, a full range of integration tools, interface definitions and command manuals are readily available. Overview’s dedicated Application Engineering team are always ready and delighted to help.
Zero Backlash
Often drive solutions are advertised as zero backlash when in truth they have reduced but not removed backlash. This is not true with Overview’s Integrated Servo Drives. As the payload is mounted directly to the motor and encoder, with no intervening belts or gears, Integrated Servo Drives achieve true zero backlash. Simplifying the transmission chain also provides benefits in drive efficiency and reliability.
Integrated Slipring
Integrated Servo Drives enable continuous rotation however, this results in challenges with providing power and data signals to the payload. All of Overview’s Integrated Servo Drives have central bores that can support sliprings reducing both the footprint and wiring complexity. Atlas, Artemis and Helios offer high performance slip rings including hybrid optical/copper sliprings supporting high bandwidth data transfer.
Servotorq II
Developed to deliver agility and precision, Servotorq II is the latest iteration of the underlying hardware and firmware technology at the heart of Overview’s Integrated Servo Drives. Providing a high performance, fully integrated ‘all-in-one’ servo drive solution, Servotorq optimises Drive motion delivering rapid, precise and ultra smooth movements.
Intelligent
Overview’s unique Servotorq technology provides a high level of intelligence. Each Drive has a powerful onboard microprocessor hosting the digital servo, drive configuration, command interface, health monitoring and other functions. Servotorq offers a trajectory generator that understands the physics of the drive and payload, applying optimal S-curve motion profile to deliver prefect motion during every move.
Low SWaP
Integrated Servo Drives deliver market leading low Size, Weight and Power at a highly competitive cost point. By combining a bespoke motor, drive electronics, position encoder and digital controller Integrated Servo Drives reduce the number of discrete drive components resulting in an extremely compact footprint without compromising speed and agility.
Typical Applications
Helios is integrated into many systems requiring ultra smooth movement, including:
- Large PTZ cameras
- Counter UAS sensor systems
- Low latency edge-AI sensor systems
- Mobile platforms
- Free space optical communications
- Satellite communication links
Technical
Torque: up to 4Nm
Speed range: 0.05°/s to 720°/s
Repeatability: 0.0055°
Weight: 1.3kg
Nominal voltage: 48V DC
Control protocol: I2C and CAN
Operational Temperature Range: -20°C to +70°C
Humidity Range: 5% to 90% RH (non-condensing)
Dimensions: (Dia. x H): 120mm x 49.5mm
Maximum radial load: 1000N
Maximum axial load: 1500N
Hardware: Range continuous, Optional endstops via software.
How this works
Overview’s drives contain precision BLDC motors, advanced electronics, high performance software and precision encoders into fully integrated, direct-drive positioning solutions.
Servotorq II
Servotorq II is the latest evolution of Servotorq technology, delivering a much tighter control loop and significantly faster reaction times.
Servotorq II maintains the Servotorq I core command set, allowing seamless integration whilst introducing field-oriented control, functionality and performance enhancements. Four interconnected PID controllers and additional motion filtering capability, allows customers to extract every ounce of performance from each drive across a wide variety of applications.
The fully interruptible third order trajectory generator within Servotorq II make equipped Drives ideal for highly dynamic applications. Versatility and application potential are further expanded by the introduction of CAN control and Helios’ on-drive inertial stabilisation.
Integrated Servo Drives within the Servotorq II series offer torques ranging from 3Nm up to 4Nm and provide speeds of up to 1000°/s.
