GB/T 36606-2018 in English

Comparative analysis of standard frameworks

Relationship between eyellipse parameters and seat adjustment

Seat travel influence:Seat travel (≥133 mm) directly affects the driver's sitting posture and eye height. According to Table 1, the axis length shows a nonlinear relationship with the visual cut ratio. For example, when the visual cut ratio is 95%, the X-axis length increases significantly to 251.0 mm, while the Z-axis length increases from 82.0 mm to 112.0 mm.

Key formulas for eyellipse center positioning

Xc calculation: Formula (2) comprehensively considers the pedal reference point, steering wheel position and clutch influence to ensure accurate lateral positioning. For example, when L6=100 mm, Xc= L1 + 628 + 0.587*100 - ....

Technology evolution and implementation suggestions

Dynamic adjustment: With the popularity of vertical seat adjustment function, it is recommended to use formula (B.2)-formula (B.4) to optimize center positioning. In particular, when the stroke exceeds 40 mm, the H point should be set at the lowest position +20 mm to improve vertical accuracy.

The influence of gender and height on eyellipse

Parameter adjustment: The standard deviation of eye point coordinates (sd_M, sd_F) for male and female should be calculated separately to ensure that the axis length accurately reflects the population differences in the side view. For example, equations (B.5) and (B.6) take into account the effect of height on the X-axis, M=0.473*(SM-SR), and the same is true for F.