scholarly journals Suspension Design to Achieve Vehicle Handling Performance Targets by Target Cascading Methodology

2021 ◽  
Vol 29 (9) ◽  
pp. 879-888
Author(s):  
Hyeonseok Cho ◽  
Byungrim Lee ◽  
Sehyun Jang ◽  
Youngdae Park ◽  
Minjun Kim ◽  
...  
Keyword(s):  
Vehicle Handling ◽  
Handling Performance ◽  
Performance Targets ◽  
Target Cascading

Target Cascading: A Design Process for Achieving Vehicle Ride and Handling Targets

2001 ◽  
Author(s):  
D. Geoff Rideout ◽  
Jeffrey L. Stein ◽  
John B. Ferris
Keyword(s):  
Design Process ◽  
Design Methodology ◽  
Vehicle Design ◽  
Design Strategies ◽  
Tire Pressure ◽  
Simulation Tools ◽  
Performance Targets ◽  
Overall Design ◽  
Target Cascading ◽  
Ride And Handling

Abstract Vehicle dynamics are well understood by both academic researchers and automotive industries. And while modeling and simulation tools are still underutilized, they are becoming more frequently used in the vehicle design process. However, there is still lacking an overall design methodology that can link and integrate in a systematic fashion the design tasks of individual components or systems such that the vehicle performs as intended with a minimal number of design iterations. A process called Target Cascading, applied in the early stages of vehicle design, might serve as this systematic design methodology. In this paper, Target Cascading is evaluated for its ability to propagate top-level design specifications down to specifications for various subsystems and components in a vehicle design problem. More specifically, general ride and handling targets are set for a vehicle and these are cascaded down through the suspension, tire pressure and spring design levels by partitioning the original problem into a hierarchical set of subproblems. At a given level, an optimization problem is formulated to minimize deviations from the proposed targets and thus achieve intersystem compatibility. A coordination strategy links all subproblem decisions so that the overall supersystem performance targets are met. Results are presented that demonstrate Target Cascading’s utility in unearthing tradeoffs and incompatibilities among initial targets early in the vehicle development cycle. Throughout the paper, the Target Cascading process is compared to traditional vehicle design strategies for achieving ride and handling targets. Target Cascading appears to be a promising systematic technique for the design of vehicles to meet ride and handling specifications.

A comprehensive active-steering control method for improvement of vehicle handling performance

2017 ◽  
Vol 232 (3) ◽  
pp. 413-425 ◽  
Author(s):  
Weimiao Yang ◽  
Pengpeng Feng ◽  
Jianwu Zhang
Keyword(s):  
Linear System ◽  
Feedback Linearization ◽  
Control Method ◽  
System Control ◽  
Steering Control ◽  
Vehicle Handling ◽  
Handling Performance ◽  
Non Linear ◽  
Tyre Modelling ◽  
Non Linear System

Non-linear system control has always been a difficult point for vehicle stabilization. To improve the vehicle handling performance, a comprehensive active-steering control method is proposed and derived. Different from traditional strategy, this new controller is based on a piecewise tyre modelling ideology combined with feedback linearization controlling method. In the linear region of wheel–terrain contact, vehicle dynamic system turns to be a linear system, an optimal control is designed for the sake of rapid response in tracking desired values. In the non-linear region, where the controlling difficulty always lies in, the tyre lateral force is described by a new polynomial formula model, which is simpler than magic formula model and more accurate than linear model. This new tyre modelling ideology ensures the feasibility of feedback linearization method in non-linear system control. To verify the proposed controller, a numerical seven-degrees-of-freedom vehicle model is built and validated by standard input simulation. Then, simulation under limit conditions, including high friction case and low friction case, are conducted and results are presented and discussed. Compared with optimal controller and free-control method, comprehensive controller has a much more desirable applicability in both cases and greatly improves the vehicle handling performance.

2302 A study of vehicle handling performance on snow road using tire contact pressure analysis

2014 ◽  
Vol 2014.23 (0) ◽  
pp. 83-86
Author(s):  
Takahiro Yokoyama ◽  
Koji hiratsuka ◽  
Rin Watanabe ◽  
Shinya Notomi ◽  
Shigeaki Suzuki
Keyword(s):  
Contact Pressure ◽  
Vehicle Handling ◽  
Handling Performance ◽  
Pressure Analysis

The Use of Accident Data in Studying Vehicle Handling Performance

1975 ◽  
Vol 189 (1) ◽  
pp. 243-258 ◽  
Author(s):  
I. S. Jones
Keyword(s):  
Weight Ratio ◽  
Control Measures ◽  
Lateral Acceleration ◽  
Loss Of Control ◽  
Accident Rate ◽  
Vehicle Handling ◽  
Handling Performance ◽  
Handling Characteristics ◽  
Accident Causation ◽  
Accident Data

A study to establish the relation between vehicle handling performance and accident causation. Since deficiencies in handling are likely to be associated with accidents involving loss of control, measures of handling which are likely to express proneness to loss of control are first suggested; emphasis is placed on simplicity of measurement to allow as many different models of car as possible to be included in the study. Accident rates for the various types of accident which are likely to be influenced by these parameters are then determined by model of car. The effect of other factors, such as variation in driver characteristics between different models of car on these rates is then assessed so that the relation between handling characteristics and accident frequency can be defined. Finally, the relative importance of the various measures of handling suggested are assessed. The results suggest that there is a definite relation between handling performance and accident causation although it is relatively small when compared to driver effects. In explaining the variation in the accident rate between different models of car, driver effects account for as much as 70 per cent; if driver effects are removed from the accident rate then handling parameters explain between 35 and 40 per cent of the remaining variation between models of car. The important parameters appear to be weight, a measure of the change in understeer as a function of lateral acceleration and power to weight ratio.

Target Cascading in Optimal System Design

2000 ◽  
Author(s):  
Hyung Min Kim ◽  
Nestor F. Michelena ◽  
Panos Y. Papalambros ◽  
Tao Jiang
Keyword(s):  
Design Problem ◽  
Optimization Problem ◽  
Original Problem ◽  
Efficient Manner ◽  
Performance Targets ◽  
Coordination Strategy ◽  
Design Specifications ◽  
Target Cascading ◽  
Optimal System Design ◽  
Problem Design

Abstract Target cascading is a key challenge in the early product development stages of large complex artifacts: How to propagate the desirable top level design specifications (or targets) to appropriate specifications for the various subsystems and components in a consistent and efficient manner. Consistency means that all parts of the designed system should end up working well together, while efficiency means that the process itself should avoid iterations at later stages, which are costly in time and resources. In the present article target cascading is formalized in a process modeled as a multilevel optimal design problem. Design targets are cascaded down to lower levels using partitioning of the original problem into a hierarchical set of sub-problems. For each design problem at a given level, an optimization problem is formulated to minimize deviations from the propagated targets and thus achieve intersystem compatibility. A coordination strategy links all subproblem decisions so that the overall system performance targets are met. The process is illustrated with an explicit analytical problem and a simple chassis design model that demonstrates how the process can be applied in practice.

Sign in / Sign up

Export Citation Format

Share Document