Unlock instant, AI-driven research and patent intelligence for your innovation.

Modeling method of vehicle dynamic model in loop simulation for hardware

A vehicle dynamics and modeling method technology, applied in special data processing applications, instruments, electrical digital data processing, etc., can solve problems such as low precision, low real-time performance, and inability to meet the requirements of vehicle model testing, and achieve improved The effect of precision and real-time

Active Publication Date: 2010-07-28
BEIJING JINGWEI HIRAIN TECH CO INC
View PDF0 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] (2) Differentiate the difference quotient
[0013] The inventor found in the process of realizing the present invention that the vehicle model in the related art has low precision and low real-time performance in the hardware-in-the-loop simulation, and cannot meet the test requirements of the vehicle model

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Modeling method of vehicle dynamic model in loop simulation for hardware
  • Modeling method of vehicle dynamic model in loop simulation for hardware
  • Modeling method of vehicle dynamic model in loop simulation for hardware

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0025] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0026] This embodiment provides a method for modeling a vehicle dynamics model of hardware-in-the-loop simulation, wherein the established vehicle model includes an engine model, a power train model, a vehicle body model, an environment model, and software TCU (Transmission Control Unit, gearbox control unit) model, etc.

[0027] The engine model includes a throttle control sub-model, ESP (Electronic Stability Program, electronic stability device) fast and slow control sub-models. The powertrain model includes starter sub-model, crankshaft motion sub-model, clutch sub-model, gearbox sub-model, central differential sub-model, and half-shaft sub-model. The body model includes tire sub-model, wheel motion sub-model, suspension sub-model, steering sub-model, body motion sub-model, aerodynamic sub-model, etc. The environment model inclu...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention provides a modeling method of a vehicle dynamic model in loop simulation for hardware. The method includes the modeling of a driver submodel; in the modeling of the driver submodel, PID control is carried out on a Class-I path for simulation, and optimal control based on ordinary differential equations related to time is carried out on a Class-II path for simulation. The steps for obtaining a control quantity of the optimal control are as follows: a matrix index corresponding to the ordinary differential equations is calculated by adopting a residue theorem of a complex function; a solution of the ordinary differential equation is calculated according to the matrix index; finally, the obtained solution of the ordinary differential equation is adopted as the control quantity of the optimal control. By adopting the method of the complex function to obtain integral of the matrix index, the modeling method in the invention improves the precision and real-time performance of the vehicle model in the loop simulation for the hardware.

Description

technical field [0001] The invention relates to the field of vehicle modeling, more specifically, to a modeling method of a vehicle dynamics model for hardware-in-the-loop simulation. Background technique [0002] With more and more controllers of vehicles and more and more road test contents, hardware-in-the-loop simulation research continues to develop, and vehicle dynamics models that can simulate vehicles in real time emerge as the times require. Vehicle dynamics models are very important in automobile research and development, such as the structural model of ADAMS (Automatic Dynamic Analysis of Mechanical Systems, automatic analysis of mechanical system dynamics). The vehicle dynamics model requires proper modeling of each component of the vehicle, only in this way can the real motion of the vehicle be correctly reflected. [0003] At present, the core algorithms to realize the real-time simulation model of the vehicle mainly involve algorithms such as real-time integr...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
Inventor 张明薛俊亮万亮范志卿
Owner BEIJING JINGWEI HIRAIN TECH CO INC