System for vehicle body roll control detecting and compensating steering oppositely to vehicle turning direction
First Claim
1. For a vehicle comprising a body and a plurality of wheels upon which said vehicle runs, a vehicle roll control system of vehicle height adjustment type, comprising:
- a plurality of actuator assemblies, each corresponding to one of said vehicle wheels and resiliently suspending a corresponding said vehicle wheel from the vehicle body, each one of said actuator assemblies being adapted to increase or decrease vehicle height at a location corresponding to said corresponding vehicle wheel in accordance with signals supplied thereto;
a plurality of control means, each corresponding to one of said actuator assemblies and serving to supply said control signals to said corresponding actuator assembly;
a vehicle speed detecting means for sensing a road speed of the vehicle;
a steering angle detecting means for sensing a steering angle of the vehicle;
a lateral acceleration detecting means for detecting a lateral acceleration of said vehicle body; and
a means for computing and control adapted to predictingly compute the roll angle of the vehicle body based upon the vehicle speed sensed by said vehicle speed detecting means and the steering angle sensed by said steering angle detecting means and to control said plurality of actuator assemblies, via said plurality of control means, in accordance with said computed roll angle, so as to keep the rolling of said vehicle body within a determinate range;
said computing and control means including means to compare a direction of the vehicle steering as detected by said steering angle detecting means with a direction of the lateral acceleration of said vehicle body as detected by said lateral acceleration detecting means, and not to effect said controlling of said plurality of actuator assemblies via said plurality of control means, when said direction of the vehicle steering is opposite to said direction of the lateral acceleration of said vehicle body.
1 Assignment
0 Petitions
Accused Products
Abstract
In this system for vehicle roll control, a plurality of actuator assemblies are provided, one corresponding to each one of the vehicle wheels and resiliently suspending it from the vehicle body. Each of these actuator assemblies is adapted to increase or decrease the vehicle height at a location corresponding to its corresponding vehicle wheel as results of control signals being supplied to it. A plurality of control means are provided corresponding to the actuator assemblies and serve to supply control signals to them. A vehicle speed detecting means senses the road speed of the vehicle, a steering angle detecting means senses the steering angle of the vehicle, and a lateral acceleration detecting means detects the lateral acceleration of the vehicle body. A means for computing and control predictingly computes the roll angle of the vehicle body from the vehicle speed sensed by the vehicle speed detecting means and the steering angle sensed by the steering angle detecting means, and controls the plurality of actuator assemblies, via the plurality of control means, in accordance with the computed roll angle, so as to reduce the rolling of the vehicle body to keep the vehicle body rolling within a determinate range. This computing and control means is further adapted to compare the direction of vehicle steering as detected by the steering angle detecting means with the direction of lateral acceleration of the vehicle body as detected by the lateral acceleration detecting means, and does not effect such controlling of the plurality of actuator assemblies, when the direction of vehicle steering is opposite to the direction of lateral acceleration of the vehicle body.
35 Citations
9 Claims
-
1. For a vehicle comprising a body and a plurality of wheels upon which said vehicle runs, a vehicle roll control system of vehicle height adjustment type, comprising:
-
a plurality of actuator assemblies, each corresponding to one of said vehicle wheels and resiliently suspending a corresponding said vehicle wheel from the vehicle body, each one of said actuator assemblies being adapted to increase or decrease vehicle height at a location corresponding to said corresponding vehicle wheel in accordance with signals supplied thereto; a plurality of control means, each corresponding to one of said actuator assemblies and serving to supply said control signals to said corresponding actuator assembly; a vehicle speed detecting means for sensing a road speed of the vehicle; a steering angle detecting means for sensing a steering angle of the vehicle; a lateral acceleration detecting means for detecting a lateral acceleration of said vehicle body; and a means for computing and control adapted to predictingly compute the roll angle of the vehicle body based upon the vehicle speed sensed by said vehicle speed detecting means and the steering angle sensed by said steering angle detecting means and to control said plurality of actuator assemblies, via said plurality of control means, in accordance with said computed roll angle, so as to keep the rolling of said vehicle body within a determinate range;
said computing and control means including means to compare a direction of the vehicle steering as detected by said steering angle detecting means with a direction of the lateral acceleration of said vehicle body as detected by said lateral acceleration detecting means, and not to effect said controlling of said plurality of actuator assemblies via said plurality of control means, when said direction of the vehicle steering is opposite to said direction of the lateral acceleration of said vehicle body. - View Dependent Claims (2, 3, 5, 6, 7)
-
-
4. For a vehicle comprising a body and a plurality of wheels upon which said vehicle runs, a vehicle roll control system of vehicle height adjustment type, comprising:
-
a plurality of actuator assemblies, each corresponding to one of said vehicle wheels and resiliently suspending a corresponding said vehicle wheel from the vehicle body, each one of said actuator assemblies being adapted to increase or decrease vehicle height at a location corresponding to said corresponding vehicle wheel in accordance with control signals supplied thereto; a plurality of control means, each corresponding to one of said actuator assemblies and serving to supply said control signals to said corresponding actuator assembly; a plurality of vehicle height detecting means each corresponding to one of said vehicle wheels and serving for sensing parameters representative of the height of the vehicle body over said corresponding vehicle wheel; a vehicle speed detecting means for sensing a road speed of the vehicle; a steering angle detecting means for sensing a steering angle of the vehicle; a lateral acceleration detecting means for detecting a lateral acceleration of said vehicle body; and a means for computing and control adapted to predictingly compute the roll angle of the vehicle body based upon the vehicle speed sensed by said vehicle speed detecting means and the steering angle sensed by said steering angle detecting means and to control said plurality of actuator assemblies, via said plurality of control means, in accordance with said computed roll angle, so as to keep the rolling of said vehicle body within a determinate range;
said computing and control means comprising means to compare a direction of the vehicle steering as detected by said steering angle detecting means with a direction of the lateral acceleration of said vehicle body as detected by said lateral acceleration detection means, and, when said direction of the vehicle steering is opposite to said direction of the lateral acceleration of said vehicle body, to compute differences between the actual vehicle heights as sensed by said plurality of vehicle height detection means and reference vehicle heights, and to control said plurality of actuator assemblies, via said plurality of control means, so as to keep said differences within determinate ranges. - View Dependent Claims (8, 9)
-
Specification