Feasibility Cum rfi

Development of compact electro-mechanical actuators

Feasibility cum RFI response for DRDO’s TDF projects

 

Precision robotics applications like exoskeletons, humanoids, and quadrupeds require compact actuators, which are typically imported as integrated systems or components. Customized solutions for specific applications are not available. To address this, the project aims to develop these actuators indigenously with Indian industry partners. Key components such as frameless motors, strain wave gear assemblies, encoders, torque sensors, and electronic controllers are mostly imported. Current practices involve assembling and testing these imported components. With the increasing demand for advanced robots and exoskeletons, developing these technologies locally will involve collaboration among specialized industries, led by a lead partner.

 

Functional and Operational Requirements

The developed technology/product should take into consideration the functional parameters such as:

  • Peak Torque:

    • ≥ 100 Nm
    • ≥ 180 Nm
    • ≥ 284 Nm
    • ≥ 390 Nm
  • Continuous Torque (min):

    • 60 Nm
    • 115 Nm
    • 157 Nm
    • 120 Nm
  • Continuous Speed (~):

    • 75 RPM
    • 115 RPM
  • Power:

    • < 1000 W
    • < 1200 W
    • < 1500 W
  • Weight:

    • < 850 g
    • < 1300 g
    • < 1500 g
    • < 3500 g
  • Diameter:

    • < 110 mm
    • < 115 mm
  • Length:

    • < 90 mm
    • < 110 mm
    • < 170 mm
  • Encoder:

    • 19-bit or more with ± 0.1° accuracy
    • Incremental: RS422, SPI interface both ends
    • Absolute: SSI, BiSS-C format
  • Motor Drive:

    • 24-100 VDC
    • Hall, SSI, BiSS-C format
    • Dual control loop capability
    • Interface: EtherCAT

 

Testing and Certification Requirements

The testing and certification for the development of compact electro-mechanical actuators in the Indian context will include performance testing for torque, speed, and power, as well as durability, thermal, and environmental tests. Compliance with relevant standards for safety, reliability, and efficiency is required.

Certification is required from NABL, DGQA and BIS.

Link to know more and apply: https://drdo.gov.in/drdo/feasibility-cum-rfi-repsonse-tdf-projects

 

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