| 摘要 |
PROBLEM TO BE SOLVED: To enhance the precision of a collision test by reducing the deviation of the actual position of collision from the set position by a simple method. SOLUTION: For calculating the mean free running velocity Va<SB>1</SB>, Va<SB>2</SB>for running from respective traction release position F<SB>1</SB>and F<SB>2</SB>, to set collision position R<SB>1</SB>, R<SB>2</SB>while taking deceleration into account, the preliminary running tests for the higher speed vehicle A<SB>1</SB>and the lower speed vehicle A<SB>2</SB>are performed. Corresponding to the deceleration rate of a set running speed V<SB>2</SB>to a second mean free running speed Va<SB>2</SB>of the lower speed vehicle A<SB>2</SB>, the delay time of a lower speed vehicle A<SB>2</SB>to arrive at the own set collision position R<SB>2</SB>is setΔT<SB>2</SB>, and the thinking distance of anticipated free running distance of the lower speed vehicle A<SB>2</SB>is L<SB>2</SB>(Δt<SB>2</SB>). Corresponding to the deceleration rate of a set running speed V<SB>1</SB>to a first mean free running speed Va<SB>1</SB>of the higher speed vehicle A<SB>1</SB>, the delay time of the high speed vehicle A<SB>1</SB>to arrive at the own set collision position R<SB>1</SB>is setΔT<SB>1</SB>, and the virtual thinking distance is L<SB>2</SB>(Δt<SB>1</SB>). The difference of thinking distance L<SB>2</SB>(Δt<SB>2</SB>) and the virtual thinking distance L<SB>2</SB>(Δt<SB>1</SB>)is calculated as correction distanceΔL<SB>2</SB>, the start point S<SB>2</SB>of the lower speed vehicle A<SB>2</SB>is shifted by theΔL<SB>2</SB>for the collision test. COPYRIGHT: (C)2006,JPO&NCIPI
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