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Vehicle chassis and powertrain set up tool for track trajectory and speed optimization

A vehicle system, vehicle technology, applied in the field of tools, able to solve problems such as difficulties

Inactive Publication Date: 2009-08-05
RICARDO INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Difficulty arises because optimization tools are effective at finding discrete parameter values, but vehicle control inputs are continuous and must be able to be smooth

Method used

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  • Vehicle chassis and powertrain set up tool for track trajectory and speed optimization

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Embodiment Construction

[0015] US Provisional Patent Application no. 60 / 669,470, filed April 8, 2005, is hereby incorporated by reference.

[0016] figure 1 A vehicle chassis and drivetrain set up tool 10 is shown for optimizing road trajectory and speed. Tool 10 generates target and design parameters as input to various vehicle system controllers and calibration modules to obtain performance targets. The tool comprises an optimizer 11 connected to a steering controller 12 , a brake controller 13 , a throttle controller 14 , an engine calibration module 15 , a drivetrain module 16 and a vehicle calibration module 17 . Based on performance goals, the controllers and modules 12 - 17 cooperate with the optimizer 11 to produce an output resulting in a vehicle system simulation 18 .

[0017] For example, the optimizer 11 is connected to the steering controller 12 to generate trajectory design parameters for the controller 12 to control the steering of the vehicle. The optimizer 11 is connected to a bra...

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Abstract

A tool that obtains a performance goal based on actual calculated performance of the vehicle, thereby eliminating a driver model. The tool includes an optimizer to determine path target points to be sent to controls, such as a steering controller, to obtain a performance goal - such as minimum transit time for a road segment. The design parameters and target lateral coordinates are input to a closed loop steering controller in a generic vehicle dynamic code. The invention uses discrete points to describe targets for path and speed making the use of optimization tools effective. The optimization is based on the actual calculated performance of the vehicle; therefore the path followed by the vehicle may be different from that described by the target(s). The target path is simply modified to obtain the best performance.

Description

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS [0002] This application claims priority to US Provisional Patent Application no. 60 / 669,470, filed April 8,2005. technical field [0003] The invention basically concerns a tool that allows optimization of the transit time for a vehicle to complete a track or circuit. Background technique [0004] During the development of motor vehicles, computerized vehicle models are used to test various designs of the vehicle chassis and drivetrain for optimal performance under various conditions. Instead of utilizing predetermined models to obtain optimal performance simulations of vehicles on the road as previously used, the tool of the present invention generates target and design parameters as input to multiple vehicle system controllers and calibration modules to obtain performance Target. [0005] One advantage over the prior art is that the tool provides an optimizer that is connected to the steering controller, brake controller, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06G7/48
CPCB60W30/02B60W2050/0036
Inventor F·F·杰奎琳D·A·哈尔C·保尔松R·J·韦克曼C·袁
Owner RICARDO INC