Stridsberg Powertrain AB

Address: Bandhagen, Sweden
Website of Institute: www.powertrain.se

General Information
Company structure

  • HDD servo motors AB: Design and serial production of servo motors

  • Stridsberg Powertrain AB
      • Robot hand motor system (ABB, EU, “SMErobot” project)
      Compact, low jamming inertia motors (SAAB licensee)
      Aircraft actuator system development
      Extremely reliable actuator system, permits take off even after most single faults?

    DRESS relevant technologies

  • HDD Servo Motors
  • Robot hand motor system
      • EU “SMErobot” aims at lighter, less dangerous robots
      Existing motor-brake-transducer units approx 2.5 kg
      SIAB has proposed a < 1kg unit that is based on proprietary motor, proprietary brake and proprietary transducer.
  • SPAB aircraft actuator demonstrator
      • Design load 10 000 N
      Design speed 0.08 m/s
      Diameter 95 mm
      Length 230 mm
      Stroke length: 100 mm
      Weight: Less than 3.5 Kg
      Design rail voltage DC 270 V
      Direct drive of roller screw. No gearbox.
      Motor, High reliability power system and feedback based on SPAB innovations.
  • Multiredundant encoder
    • : Permits 2 - 6 electrically totally independent transducers in a 10 mm long unit with any hollow shaft diameter.
  • Anti jamming
    •
      Two arm parts normally kept together by two bolts
      The bolts can be removed by a pyrotechnic charge
      Negligible shock to surrounding structure due to symmetry
  • Hi-rel motor system
      • Each CPU can run the whole system
      The active CPU has a task almost as simple as that of an ordinary brushless motor controller
      6 galvanically insulated half phases
      6 thermally separated half phases
      Multiple independent feedbacks
      Switch can break the current in a half phase connected to a shorted transistor
      24 small transistors in place of 6 large; same total VA rating but lighter heat sinks
  • Actuator system