The invention relates to a method for simulating the driving behavior of vehicles on a test stand in which the engine of the vehicle is coupled on the test stand to an electronically controllable braking apparatus and a first simulation model calculates simulation values of variables which are representative of the driving state of the vehicle in that the reaction of the vehicle to the behavior of the engine and the values of the variables as determined immediately prior thereto are calculated, with at least one evaluation variable w being calculated on the basis of the values measured on the test stand for measurable variables and engine torque M and the values calculated therefrom with the simulation model for non-measurable variables. An improved simulation is achieved in such a way that in a further simulation model higher-frequency changes are calculated from variables which are measurable per se and are considered in the calculation of the evaluation variable by superimposing with the actual measured values or that in the simulation model higher-frequency changes are calculated from variables which are measurable per se and are considered in the calculation of the evaluation variable w by superimposing with the actual measured values.

Method for simulating the driving behavior of vehicles

The invention concerns a method of establishing rules ( 14 ) for a specific device which is intended to be able to be used for generating decision support for decisions which determine the behavior of an entity ( 44 ) and/or for controlling the behavior of an entity ( 44 ). The device is, inter alia, arranged to present a decision support window which comprises at least one area ( 56 ) which represents a state ( 30 ), wherein this area ( 56 ) comprises names which identify different rules ( 14 ) which form part of the state ( 30 ). The method according to the invention comprises the steps that the device is run in a real or simulated version of said entity ( 44 ), that said decision support window is presented to a user, that the user makes decisions by inputting instructions, that the decisions which have been made by the user are analysed, and that the rules ( 14 ) for which the user has made decisions are determined or modified in accordance with the analysis which has been carried out.

Method of establishing rules for a device which is intended to be able to be used for generating decision support

To provide a method of assisting in the design of a vehicular suspension by allowing definition points inherent in suspensions to be easily recognized regardless of the different types and mechanisms thereof, and allowing specification values to be simply entered at the definition points. A method of assisting in the design of a vehicular suspension to generate a simulation model for a suspension using a CAD system includes the steps of indicating a suspension to be designed, opening a specification value entering window for entering specification values inherent in the indicated suspension, entering specification values at definition points inherent in the indicated suspension in the specification value entering window, and generating a simulation model based on the specification values at the definition points.

Method of assisting the design of a vehicular suspension

A method and apparatus for the control of the attitude of earth orbiting satellites and the orbit and attitude control of a novel gravitational wave detection satellite configuration located near the sun-earth Lagrangian points L3, L4 and L5, utilizing the control of solar radiation pressure by the use of electrically controllable variable reflection glass panels to provide the torques and forces needed.

Satellite control system using electrically controllable variable reflection glass panels

The invention relates to a method and an associated device for simulating the driving characteristics of a drive concept to be developed for a motor vehicle. The aim of the invention is to provide a method and an associated device for simulating the driving characteristics of a drive concept to be developed for a motor vehicle, using which the longitudinal dynamics and the energy requirements of designed concepts are simulated, compared with one another and validated during an actual driving operation. According to the invention, in order to simulate the driving characteristics of a drive concept to be developed for a motor vehicle during an actual driving operation for a production vehicle, the engine and transmission control are influenced by means of an additional control unit in such a way that the longitudinal dynamics of the production vehicle correspond to that of a designed hybrid drive. To achieve this, the additional control unit for influencing the longitudinal dynamics of the conventional carrier vehicle intervenes in the signal path of the accelerator pedal in the carrier vehicle and can determine the position of said pedal, simulating the position of a 'virtual accelerator pedal' by means of a signal generator, thus regulating the acceleration of the vehicle. The control unit accesses the CAN data bus of the drive train of the carrier vehicle to deliver the current speed, the current gear selected and the position of the brake pedal, which represent important input variables for the simulation.

Method and device for simulating the driving characteristics of a drive concept to be developed for a motor vehicle

The invention concerns a device for the control of the behaviour of one or more simulated vehicles The device comprises different units ( 10, 12, 16, 18, 20 ) for supervising the device, for presenting information and for making it possible to input instructions The behaviour of the vehicle is controlled with the help of a number of rules ( 14 ) Each rule ( 14 ) comprises one or more premises ( 22 ) and conclusions ( 24 ) The premises ( 22 ) are assigned an indicator which may indicate different conditions, viz that the premise ( 22 ) shall be true, that the premise ( 22 ) shall be false or that it does not matter whether the premise ( 22 ) is true or false The invention also concerns a method of generating rules ( 14 ) suited to control the behaviour of a real or a simulated vehicle The generation may be done by detecting the behaviour of a real/simulated vehicle controlled by a driver Alternatively, the rules may be generated without detecting the behaviour of a driver-controlled vehicle

Device and a method concerning the behaviour of a vehicle

The invention concerns a device for the control of the behaviour of one or more simulated vehicles. The device comprises differentunits (10, 12, 16, 18, 20) for supervising the device, for presenting information and for making it possible to input instructions. The behaviour of the vehicle is controlled with the help of a number of rules (14). Each rule (14) comprises one or more premises (22) and conclusions (24). The premises (22) are assigned an indicator which may indicate different conditions, viz. that the premise (22) shall be true, that the premise (22) shall be false or that it does not matter whether the premise (22) is true or false. The invention also concerns a method of generating rules (14) suited to control the behaviour of a real or a simulated vehicle. The generation may be done by detecting the behaviour of a real/simulated vehicle controlled by a driver. Alternatively, the rules may be generated without detecting the behaviour of a driver-controlled vehicle.

Hagelin Hans-Ove

Papers

Device and a method concerning the behaviour of a vehicle

A device and a method concerning the behaviour of a vehicle