DESCRIPTION
GENERAL DATA

The steering angle speed sensor detects the angle of the steering wheel in order to which direction a user chooses.The sensor is detached on the MPS(Mutil-Function Switch) under the steering wheel.

MEASUREING PRINCIPLE

A non contact, analog angle sensor carrying out absolute measuring by the use of the Anisotropic-Magneto-Resistive effect (AMR).Measuring of the absolute angle by means of a toothed measuring gear with magnetic properties in combination with different ratios. Corresponding AMR elements that change their electrical resistance according to the magnetic field direction detect the angle position of the measuring gears.A micro-controller decodes the measured voltage signals after A/D converting with the help of a mathematical function. Output of the digital angle value and velocity via CAN-interface.

SPECIFICATION

Description

Specification

Operating voltage

8~16 V

Operating temperature

-40 ~ 85 ℃

Current consumption

Max.150 mA

Steering angle velocity

Max. ±2000 °/sec

Connection delay time

t ＜ 200 ms

Reverse voltage

-13.5 V

Measuring range

Angle

-780 ° ~ 779 °

Angular velocity

0~ 1016 °/s

Nonlinearity angle

-2.5 ° ~ +2.5 °

Hysteresis angle

0 ° ~ 5 °

Rotational friction torque measuring

10 °/s

CIRCUIT DIAGRAM( STEERING WHEEL SPEED ANGLE SENSOR)
STEERING ANGLE SENSOR (SAS) calibration
1.

PURPOSE OF calibration

A.

On vehicle control, an ESC analyzes the intention of the driver.

B.

An ESC recognizes a steering angle which a driver rotates through the steering angle sensor.

C.

A steering angle sensor used in ESC8 adjusts 0° setting of steering wheel through K-line or CAN communication.

2.

STEERING ANGLE SENSOR (SAS) CALIBRATION METHOD

(1)

Align the wheel to the straight line. (steering wheel ＜ ± 5° )

ex) Perform the wheel alignment first.

Align the wheel to the straight line.

A driver moves the vehicle to the front and back about 5 meters twice or three times.

(2)

Connect Hi-scan to the vehicle.

(3)

Select Brake system.

(4)

Select Steering angle sensor(SAS) calibration.

(5)

Perform the Steering angle sensor(SAS) calibration.

(6)

Perform the procedure continuously.

(7)

The procedure is finished. Push the "ESC" key.

(8)

Scanner OFF.

(9)

Remove the scanner from the vehicle.

(10)

Confirm the Steering angle sensor(SAS) calibration as driving the vehicle.(turn left once, turn right once)

Яндекс.Метрика