A Novel Electric-Power-Steering (EPS) Control Algorithm Development for the Reference Steering Feel Tracking

Lee, Dongpil; Jang, Bongchoon; Yi, Kyongsu; Chang, Sehyun; Lee, Byungrim

doi:10.4271/2016-01-1546

Cited by 7 publications

(2 citation statements)

References 15 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…According to the steering wheel torque and steering wheel angle at steady state, the pinion angle at steady state can be calculated from equation (4). Thus the original data of the pinion angle relative to the lateral acceleration is obtained, as shown in Figure 5.…”

Section: Experiments Methodsmentioning

confidence: 99%

“…1,2 The difficulty of matching the EPS system with vehicle lies in the control of steering feel to make the driver's steering input and the vehicle's steering motion intensity have a satisfying fixed relationship. 3,4 As the most basic function of the EPS system, assistant control has an essential impact on the performance of the EPS system. The EPS assist characteristic curve, which is the core of assistant control, has a significant effect on the steering portability and road feel.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Study on decomposition and calculation method of EPS assist characteristic curve

Guan

Zhang

Duan

et al. 2021

Proceedings of the Institution of Mechanical Engineers, Part D:

View full text Add to dashboard Cite

Steering feel is closely related to the matching of the EPS assist characteristic curve, however, due to the lack of theoretical basis for the design of the EPS assist characteristic curve, the steering feel can only be changed indirectly by adjusting the magnitude of assist, which is very difficult. To control steering feel directly and reduce the difficulty of adjustment, this paper proposes a decomposition and calculation method of the EPS assist characteristic curve. At first, the mechanism of the EPS assist characteristic curve is revealed. It is found that the process of designing and adjusting the EPS assist characteristic curve is a process of changing the corresponding relationship between the steering wheel torque and the steering motion intensity based on considering vehicle dynamic characteristics. On this basis, the driver’s desired steering motion intensity and the pinion angle position are taken as intermediate variables, the EPS assist characteristic curve is decomposed into three parts: driving style, steady-state inverse characteristics of chassis dynamics, and steady-state inverse characteristics of steering system dynamics. According to the designed driving style and the calibrated steady-state inverse characteristics of chassis dynamics and steering system dynamics, the EPS assist characteristic curve can be directly calculated. The test results show that the EPS system adopting assist characteristic curve calculated can realize the designed driving style and provide consistent and controllable steering feel on the premise of meeting the requirements of steering portability and road feel.

show abstract

Section: Experiments Methodsmentioning

confidence: 99%