ACTIVE STABILIZER SUSPENSION SYSTEM


  1. CONSTRUCTION


    1. The active stabilizer control actuator assembly which are located axially along the front and rear stabilizer bars, consist of components such as a motor and a reduction mechanism.

      A01R29VC02
      *1 Front Active Stabilizer Control Actuator Assembly *2 Rear Active Stabilizer Control Actuator Assembly
      *a Reduction Mechanism *b Motor

    2. A compact, high power output, and low noise brushless type motor is used.

    3. The motor shaft is coupled to the wave generator, and the motor housing is coupled to the circular gear.

    4. The rotational angle sensor detects the rotational angle of the motor shaft and sends a signal to the active stabilizer control ECU assembly.

    5. If a system malfunction occurs, the built-in motor short relay short circuits the motor terminals and virtually locks the active stabilizer actuator.

      A01R2PYC02
      *a Wave Generator *b Motor Shaft
      *c Motor Short Relay Portion *d RH Stabilizer Bar
      *e Magnet *f Coil
      *g Rotational Angle Sensor *h LH Stabilizer Bar

    6. The construction of the wave generator, flexible gear and circular gear is as follows:

      Item Construction
      Wave Generator

      • Consists of an oval-shaped cam, a ball bearing that is fitted around the cam.

      • Coupled to the motor shaft of the motor, rotates inside the flexible gear.
      Flexible Gear

      • Consists of an elastic metal outer circumference that has 400 teeth and the spline coupled to the LH stabilizer bar.

      • Located on the outside of the wave generator, it meshes with the circular gear while undergoing elastic deformation from the rotational movement of the wave generator.
      Circular Gear

      • Consists of a housing inner circumference that has 402 teeth and the spline coupled to the RH stabilizer bar.

      • Located on the outside of the flexible gear, it meshes with the major axis of the flexible gear via the rotational movement of the wave generator.
      A01R1VSC01
      *a Motor Shaft *b RH Stabilizer Bar
      *c LH Stabilizer Bar *d Circular Gear
      *e Flexible Gear *f Wave Generator

  2. OPERATION


    1. The active stabilizer control ECU assembly determines the operation amount of the active stabilizer control actuator assembly based on signals from various sensors, and sends power to operate the actuator.

    2. If the motor in the actuator is operated by the power from the active stabilizer control ECU assembly, the wave generator rotates.

    3. The engagement position of the flexible gear with the circular gear moves as its shape is being changed by the wave generator.

    4. After the motor makes 1 turn, the flexible gear will have shifted in the opposite direction of motor rotation because the number of the flexible gear teeth and the number of circular gear teeth are different.

    5. The flexible gear is connected to the left side stabilizer bar and the circular gear to the right side stabilizer bar, so that as the motor operates, a position difference is generated between the left and right side stabilizer bars.

    6. If the stabilizer bar is adjusted with an appropriate amount of motor operation, the roll angle when cornering will be controlled.

      A01R2EYC01
      *a Flexible Gear *b Circular Gear
      *c Wave Generator *d Position difference generated between the flexible gear and circular gear