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US 6,611,784 B2Granted
Process for determining lateral overturning of vehicle
AssigneeHonda Giken Kogyo Kabushiki Kaisha
InventorsShigeo Tobaru, Hiroyuki Maeda, Osamu Takahata
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AssigneeHonda Giken Kogyo Kabushiki Kaisha
InventorsShigeo Tobaru, Hiroyuki Maeda, Osamu Takahata
Estimating the term…
A process for determining lateral overturning of a vehicle in which a threshold value line is established separating a lateral overturning region farther from an origin and a lateral non-overturning region closer to the origin on a two-dimensional map made using a rolling angle θ and a rolling angular speed ω of the vehicle as parameters. When a hysteresis line for actual rolling angles and actual rolling angular speeds of the vehicle traverses the threshold value line from the lateral non-overturning region to the lateral overturning region, it is determined that there is a possibility of lateral overturning of the vehicle. When the rolling angular speed ω of the vehicle is increased sharply after the rolling angle θ has reached a fully bumping rolling angle θFB while the rolling angular speed ω was decreased, it is determined that the vehicle is in a state in which the lateral overturning due to a rolling resonance phenomenon is liable to occur, whereby the threshold value line S is moved toward the origin.
A process for determining the lateral overturning of a vehicle, comprising the step of establishing a threshold value line separating a lateral overturning region farther from an origin and a lateral non-overturning region closer to the origin on a two-dimensional map made using a rolling angle and a rolling angular speed of the vehicle as parameters, so that when a hysteresis line for actual rolling angles and actual rolling angular speeds of the vehicle traverses said threshold value line from the lateral non-overturning region to the lateral overturning region, it is determined that there is a possibility of lateral overturning of the vehicle, and wherein when the rolling angular speed is increased after the rolling angle has reached a fully-bumping rolling angle while the rolling angular speed was decreased, said threshold value line is moved toward the origin.
A process for determining the lateral overturning of a vehicle, comprising the step of establishing a threshold value line separating a lateral overturning region farther from an origin and a lateral non-overturning region closer to the origin on a two-dimensional map made using a rolling angle and a rolling angular speed of the vehicle as parameters, so that when a hysteresis line for actual rolling angles and actual rolling angular speeds of the vehicle traverses said threshold value line from the lateral non-overturning region to the lateral overturning region, it is determined that there is a possibility of lateral overturning of the vehicle, wherein a data-storing region adjacent the threshold value line is established in the lateral non-overturning region, and when said hysteresis line has entered into said data-storing region, said hysteresis line is stored.
A process for determining the lateral overturning of a vehicle, comprising the step of establishing a threshold value line separating a lateral overturning region farther from an origin and a lateral non-overturning region closer to the origin on a two-dimensional map made using a rolling angle and a rolling angular speed of the vehicle as parameters, so that when a hysteresis line for actual rolling angles and actual rolling angular speeds of the vehicle traverses said threshold value line from the lateral non-overturning region to the lateral overturning region, it is determined that there is a possibility of lateral overturning of the vehicle, and wherein said threshold value line is moved in accordance with at least one of a differentiation value of the rolling angular speed with regard to the rolling angle and a time-differentiation value of the rolling angular speed.
A process for determining the lateral overturning of a vehicle, comprising the step of establishing a threshold value line separating a lateral overturning region farther from an origin and a lateral non-overturning region closer to the origin on a two-dimensional map made using a rolling angle and a rolling angular speed of the vehicle as parameters, so that when a hysteresis line for actual rolling angles and actual rolling angular speeds of the vehicle traverses said threshold value line from the lateral non-overturning region to the lateral overturning region, it is determined that there is a possibility of a lateral overturning of the vehicle, and wherein when it is determined that the vehicle is in a condition such that said lateral overturning of the vehicle is very likely to occur, said threshold value line is moved toward the origin.
Dependencies are inferred from the claim text.