Document ID: chunk:federal_register_of_legislation:F2014C01109:body:0:p39
Version: federal_register_of_legislation:F2014C01109
Segment Type: other
Provision Reference: 
Character Range: 112569–115507

average filter.

       5.11.5. Lateral acceleration, yaw rate and steering wheel angle data channels are zeroed utilizing a defined "zeroing range."  The methods used to establish the zeroing range are defined in paragraphs 5.11.5.1. and 5.11.5.2.

       5.11.5.1. Using the steering wheel rate data calculated using the methods described in paragraph 5.11.4., the first instant that the steering wheel rate exceeds 75 deg/sec is identified.  From this point, steering wheel rate shall remain greater than 75 deg/sec for at least 200 ms.  If the second condition is not met, the next instant that the steering wheel rate exceeds 75 deg/sec is identified and the 200 ms validity check applied.  This iterative process continues until both conditions are ultimately satisfied.

       5.11.5.2. The "zeroing range" is defined as the 1.0 second time period prior to the instant the steering wheel rate exceeds 75 deg/sec (i.e., the instant the steering wheel velocity exceeds 75 deg/sec defines the end of the "zeroing range").

       5.11.6. The Beginning of Steer (BOS) is defined as the first instance when the filtered and zeroed steering wheel angle data reaches -5 degrees (when the initial steering input is anticlockwise) or +5 degrees (when the initial steering input is clockwise) after a time defining the end of the "zeroing range."  The value for time at the BOS is interpolated.

       5.11.7. The Completion of Steer (COS) is defined as the time the steering wheel angle returns to zero at the completion of the Sine with Dwell steering manoeuvre.  The value for time at the zero degree steering wheel angle is interpolated.

       5.11.8. The second peak yaw rate is defined as the first local yaw rate peak produced by the reversal of the steering wheel.  The yaw rates at 1.000 and 1.750 seconds after COS are determined by interpolation.

       5.11.9. Determine lateral velocity by integrating corrected, filtered and zeroed lateral acceleration data.  Zero lateral velocity at the BOS point.  Determine lateral displacement by integrating zeroed lateral velocity.  Zero lateral displacement at the BOS point.  The lateral displacement measurement is made at 1.07 seconds after BOS point and is determined by interpolation.

Appendix 2 - Attachment 1

         The following is a modified form of Annex 9 – Appendix 1 of UNECE Regulation No. 13-H– UNIFORM PROVISIONS CONCERNING THE APPROVAL OF PASSENGER CARS WITH REGARD TO BRAKING, incorporating supplement 7 and corrigendum to supplement 7 of the 00 series of amendments.

USE OF THE DYNAMIC STABILITY SIMULATION

The effectiveness of the electronic stability control system may be determined by computer simulation.

       1. USE OF THE SIMULATION

       1.1. The vehicle stability function shall be able to be demonstrated by the vehicle manufacturer to the 'Administrator' by simulating the dynamic manoeuvres of paragraph 5.9. of Appendix 2.

       1.2.