System for predicting behavior of automotive vehicle and for controlling vehicular behavior based thereon
First Claim
1. A system for controlling the behavior of an automotive vehicle comprising:
- means for detecting operational magnitude for controlling a steering system, an engine, a power train and a suspension system of the automotive vehicle;
means for detecting a control magnitude of actuating means for controlling the steering system, the engine, the power train and the suspension system of the automotive vehicle;
means for detecting an amount associated with behavior in each of three dimensional directions of the vehicle;
means, storing a standard behavior model, for taking said operational magnitude in a standard vehicle having predetermined reference response characteristics, and amounts associated with the current behavior of the vehicle, and outputting amounts associated with a forthcoming behavior of said standard vehicle;
first predicting means for predicting an amount associated with behavior of said standard vehicle using said standard behavior model with respect to input data of a detected current operational magnitude and amounts associated with the current behavior of the vehicle;
means, storing a behavior predicting model of the vehicle to be actually controlled, for taking said operational magnitude and amounts associated with behavior of the vehicle to be actually controlled as input data, and outputting an amount associated with forthcoming behavior of said vehicle in response to said input data;
second predicting means for predicting an amount associated with the behavior of said vehicle to be actually controlled using the behavior predicting model of said vehicle to be actually controlled based on the detected current operational magnitude and amounts associated with the behavior;
first difference detecting means for comparing values of the amounts associated with the behavior of the standard vehicle, predicted by said first predicting means, and the values of the amounts associated with the behavior of the vehicle to be actually controlled, predicted by said second predicting means, for detecting a difference between the predicted amounts;
second difference detecting means for comparing the values of amounts associated with the current behavior of the vehicle and the value of the amount of the behavior predicted by said first predicting means to derive a difference therebetween; and
control means, responsive to the difference of the predicted values detected by said first difference detecting means exceeding a predetermined value, for adjusting a control magnitude of said actuating means in a direction for reducing the difference detected by said second difference detecting means.
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Accused Products
Abstract
A system for detecting a physical amount of behavior of a vehicle includes, acceleration sensors arranged on at least two longitudinal axes of the vehicle, the vertical axis Of the vehicle and the lateral axis of the vehicle, a plurality of the acceleration sensors being disposed on each of the axes. A unit is provided for establishing a conversion equation for determining acceleration values of linear motion at an arbitrary point of the vehicle in the direction of each axis of an arbitrary coordinate system and acceleration values of rotational motion with respect to the each axis of the coordinate system while simultaneously using acceleration values detected by the acceleration sensors disposed on at least two of the vehicular longitudinal axes, the vertical axis and the lateral axis. There is also provided a unit for calculating the conversion equation to obtain the acceleration values of linear motion at an arbitrary point of the vehicle in the direction of each axis of the arbitrary coordinate system and acceleration values of rotational motion with respect to each axis of the coordinate system, a unit for establishing a motion equation expressing a plurality of freedom motions, and a unit for calculating the motion equation with the acceleration values of linear motion at an arbitrary point of the vehicle in the direction of each axis of the arbitrary axis of the arbitrary coordinate system and acceleration values of rotational motion with respect to the each axis of the coordinate system to obtain the physical amount associated with the behavior of the vehicle.
326 Citations
14 Claims
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1. A system for controlling the behavior of an automotive vehicle comprising:
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means for detecting operational magnitude for controlling a steering system, an engine, a power train and a suspension system of the automotive vehicle; means for detecting a control magnitude of actuating means for controlling the steering system, the engine, the power train and the suspension system of the automotive vehicle; means for detecting an amount associated with behavior in each of three dimensional directions of the vehicle; means, storing a standard behavior model, for taking said operational magnitude in a standard vehicle having predetermined reference response characteristics, and amounts associated with the current behavior of the vehicle, and outputting amounts associated with a forthcoming behavior of said standard vehicle; first predicting means for predicting an amount associated with behavior of said standard vehicle using said standard behavior model with respect to input data of a detected current operational magnitude and amounts associated with the current behavior of the vehicle; means, storing a behavior predicting model of the vehicle to be actually controlled, for taking said operational magnitude and amounts associated with behavior of the vehicle to be actually controlled as input data, and outputting an amount associated with forthcoming behavior of said vehicle in response to said input data; second predicting means for predicting an amount associated with the behavior of said vehicle to be actually controlled using the behavior predicting model of said vehicle to be actually controlled based on the detected current operational magnitude and amounts associated with the behavior; first difference detecting means for comparing values of the amounts associated with the behavior of the standard vehicle, predicted by said first predicting means, and the values of the amounts associated with the behavior of the vehicle to be actually controlled, predicted by said second predicting means, for detecting a difference between the predicted amounts; second difference detecting means for comparing the values of amounts associated with the current behavior of the vehicle and the value of the amount of the behavior predicted by said first predicting means to derive a difference therebetween; and control means, responsive to the difference of the predicted values detected by said first difference detecting means exceeding a predetermined value, for adjusting a control magnitude of said actuating means in a direction for reducing the difference detected by said second difference detecting means. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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Specification