A method for detecting a rollover on the basis of a signal of an acceleration sensor in the direction of the vertical axis of the vehicle is described, wherein the time period in which acceleration lies within a specified range is assessed. For this purpose, a counter and a clock generator are provided, wherein the counter is incremented each clock pulse if acceleration lies within a specified range, and the counter is decremented maximally to the value of zero if acceleration lies outside of a specified range. An emergency call may be triggered if a specified counter reading is reached. Additionally, a maximum speed may be specified in the travel direction above which the counter or the triggering is not active.

Motorcycles can become unstable when operating at high speeds and at high cornering levels. For example, they can exhibit an oscillation at the rear wheel commonly known as weave. A system and method is provided which utilizes a high-fidelity computer simulation model of a 2- or 3-wheel motorcycle to predict operating states such as yaw rate, lateral acceleration and roll angle for a stable motorcycle at a given speed and steer angle. The operating state of a physical motorcycle can be measured and compared to that of the model at every instant in time to determine if the operating state of the physical motorcycle differs from that of the simulation model in such a way as to indicate loss of stability. The nature of that difference can then be used to intervene in the operation of the motorcycle independent of driver actions by application of brakes, modulating the engine torque or applying torques to urge the steering system in a corrective direction. Thus by comparing the physical response of the motorcycle to that of the computer model in an on-board controller these interventions can be applied at a time and intensity to stabilize the motorcycle and prevent a loss of control.

An automobile cornering rollover prevention system comprises a speed controller, a wheel deflection measuring instrument mounted on a front wheel of the automobile, force sensors mounted on axis positions of four wheels, and an angular speed measuring instrument and a speed controller mounted on the front wheel of the automobile, and the wheel deflection measuring instrument, the angular speed measuring instrument and the force sensor are all electrically connected to the speed controller. The speed controller is connected to a brake system of the automobile, so that the speed can be intelligently reduced through the brake system. When a driver changes .sub.1 according to a road condition, the speed controller may calculate a critical radius in real time and then compare the speed and give a command in real time for controlling the speed, so that the speed is maintained in an ideal range.

A method for lateral dynamic stabilization of a single-track motor vehicle during cornering; on the left side of the vehicle, the motor vehicle including at least one first nozzle, which is mounted at a first position located between the wheels, and through which a medium situated in a first container may escape into the surroundings of the motor vehicle, with a speed component pointed in the outer direction of the left side of the vehicle; and on the right side of the vehicle, the motor vehicle including at least one second nozzle, which is mounted at a second position located between the wheels, and through which a medium situated in a second container may escape into the surroundings of the motor vehicle, with a speed component pointed in the outer direction of the right side of the vehicle; where a presence of an unstable driving condition in a lateral direction of the vehicle is detected, and as a function of this, with the aid of an actuator system, on only one side of the vehicle, the medium is caused to escape through the at least one nozzle mounted on this side of the vehicle, in order to stabilize the motor vehicle.

An object of the invention is to realize an M+ control which is suitable to a driving scene without depending on pedal operation information of a driver. A vehicle motion control device according to the invention sets an absolute value of deceleration generated in the vehicle in a period in which the lateral motion of the vehicle is predicted to be changed from a state where the vehicle takes the lateral motion to a state where the vehicle does not take the lateral motion to be smaller than that generated in a period in which the lateral motion of the vehicle is predicted to be changed from a state the vehicle takes one of right and left lateral motions to a state where the vehicle takes the other lateral motion.

A communication system for a vehicle comprises a mechanism for sensing a motion status of a vehicle, a control device, plurality of data acquisition sensors, and one or more alerting device activation circuits. The communication system is customizable with the plurality of data acquisition sensors and one or more alerting device activation circuits based upon the needs of the vehicle.

A control system for a vehicle includes an internal vehicle reference model that determines reference states for the vehicle that represent an expected vehicle response, sensors that determine measured states for the vehicle, and a vehicle motion control system that determines desired states for the vehicle. A stability determining module identifies a reference deviation between the reference states and the measured states, identifies a desired deviation between the desired states and measured states, and outputs a command for reducing the reference deviation and the desired deviation. Actuators are operable to reduce the reference deviation and the desired deviation in response to the command.

A communication system for a vehicle comprises a mechanism for sensing a motion status of a vehicle, a control device, plurality of data acquisition sensors, and one or more alerting device activation circuits. The communication system is customizable with the plurality of data acquisition sensors and one or more alerting device activation circuits based upon the needs of the vehicle.

A vehicle includes a vehicle frame, front wheels, and rear wheels. The vehicle also includes front drive means for driving the front wheels with a front nominal speed, rear drive means for driving the rear wheels with a rear nominal speed, and control means. The control means are adapted and configured for selectively controlling the front drive means and the rear drive means so that either the front nominal speed is different from the rear nominal speed, or so that the front nominal speed is equal to the rear nominal speed.

A communication system for a vehicle comprises a mechanism for sensing a motion status of a vehicle, a control device, plurality of data acquisition sensors, and one or more alerting device activation circuits. The communication system is customizable with the plurality of data acquisition sensors and one or more alerting device activation circuits based upon the needs of the vehicle.