steering

  1. J

    How to define steering deadband zone?

    Consider a hydraulic steering system with small electric motor atop. The maximum output torque of this motor is about 2 N.m. This output torque is input to worm gear. The output torque of the worm gear is about 20 N.m. This steering subsystem is mounted in a prototype truck. The requirement...
  2. J

    What is Return to Center (RTC) mechanism in Hydraulic Power Steering System?

    In a purely hydraulic power steering systems where there is no electrical components at all, how does Return to Center (RTC) work? Following is purely hydraulic power steering system video posted in this forum: This video makes this statement about RTC mechanism: "After completing turn driver...
  3. J

    How to bench test typical Electric Power Steering (EPS) ECU?

    EPS Bench setup we are thinking about: Torque Angle Sensor (TAS) will be emulated by PIC microcontroller. Emulated TAS will be connected to EPS ECU's Single Edge Nibble Transmission (SENT) bus. Our strategy in getting started with EPS Bench testing: Use PIC microcontroller to apply...
  4. J

    How to test electric power steering (EPS) for stability on adverse road conditions?

    Please consider commercial vehicle equipped with EPS ECU and other ECUs such as Antilock brake system (ABS), engine, transmission, Body Control Module (BCM), etc. I would like to come up with tests for testing EPS on adverse road conditions such as wet or icy pavement for vehicle stability...
  5. J

    Are Cross-wind compensation and Road crown compensation functions inputs to LKA function?

    Please consider Active Steering Assist Electronic Control Unit (Steering ECU) used in a commercial truck. It has Lane Keep Assist (LKA) function, Cross-wind compensation, and Road crown compensation. This ECU is composed of a camera input, and driver outputs to control the torque overlay...
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