Future Electrical Steering Systems: Realizations with Safety Requirements

Harter, Werner; Pfeiffer, Wolfgang; Dominke, Peter; Ruck, G. W.; Blessing, Peter H.

doi:10.4271/2000-01-0822

Cited by 32 publications

(6 citation statements)

References 1 publication

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“…Harter et al [4] examined electrical power steering and steer-by-wire systems with and without hydraulic back up. The authors discussed the advantages and disadvantages, as well as strategies for failure detection, localization, and treatment.…”

Section: Introductionmentioning

confidence: 99%

A Real Time Re-Configurable Steering Simulator for System Design Studies

Iyasere

Black

Kinstle

et al. 2007

2007 American Control Conference

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The automotive steering system plays an important role in determining the behavioral dynamics of the operator/vehicle interface. The system's primary function is to transmit the driver commanded steering wheel angle to the road wheels; The secondary function is to provide tire/road interface information back to the driver. The automotive chassis engineer needs a design tool to evaluate the effect of steering parameters on overall vehicle lateral behavior. In this paper, a real time steering simulator will be presented to emulate the behavior of automotive steering systems. The re-configurable steerby-wire simulator allows for the emulation of steering systems ranging from hydraulic, electric and steer-bywire in passenger, light duty, and commercial vehicles for pre-production and production models. To validate the simulator's functionality, a case study has been performed with numerical and experimental data. Comparisons between the simulator results and field data demonstrate a high level of correspondence. The re-configurable simulator evaluation tool represents a contribution to the field of automotive design.

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Section: Introductionmentioning

confidence: 99%

A Real Time Re-Configurable Steering Simulator for System Design Studies

Iyasere

Black

Kinstle

et al. 2007

2007 American Control Conference

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“…This was addressed by developing junction boxes that could contain more joints while enabling stacking and compactness [8][9][10]. Then, as the number of circuits in automotive wiring harnesses continued to increase along with the complexity of the control unit(s), junction boxes (JBs) were further enhanced to improve the function of the wiring harness by reducing the number of redundant power and signal lines and integrating the mounted components [11][12][13]. However, with the emergence of ever more intelligent, advanced, and eco-friendly cars designed to satisfy increasingly stringent environmental and emissions regulations, the complexity of the electronics systems in cars increased The growing adoption of xEVs has triggered a need for SJBs that can be mounted on xEVs to serve as a stable source of power [21].…”

Section: Introductionmentioning

confidence: 99%

Implementation and Experimental Verification of Smart Junction Box for Low-Voltage Automotive Electronics in Electric Vehicles

Lee

Baek

2020

Applied Sciences

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In this study, we designed and implemented a smart junction box (SJB) that was optimized for supplying power to low-voltage headlights (13.5 V) in electric vehicles. The design incorporated a number of automotive semiconductor devices, and components were placed in a high-density arrangement to reduce the overall size of the final design. The heat generated by the SJB was efficiently managed to mount an Intelligent Power Switch (IPS), which was used to power the headlights onto the printed circuit board (PCB) to minimize the impact on other components. The SJB was designed to provide power to the headlights via pulse width modulation to extend their lifetime. In addition, overload protection and fail/safe functions were implemented in the software to improve the stability of the system, and a controller area network (CAN) bus was provided for communications with various components in the SJB as well as with external controllers. The performance of the SJB was validated via a load operation test to assess the short circuit and overload protection functions, and the output duty cycle was evaluated across a range of input voltages to ensure proper operation. Based on our results, the power supplied to the headlights was found to be uniform and stable.

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“…Beyond usual sensor diagnosis such as analogue signal monitoring, test patterns etc (all of them described in recognized safety standards such as (IEC61508 1998)), more advanced methods aiming at analytical redundancy of the sensor are needed. For relateted works on advancced fault detection in automotive systems we refer to (Harter 2000, Knoop et al 1999, Schwarte and Isermann 2002.…”

Section: Introductionmentioning

confidence: 99%

Fault Detection of a Steering Wheel Sensor Signal in an Active Front Steering System

Malinen

Lundquist

Reinelt

2007

Fault Detection, Supervision and Safety of Technical Processes 2006

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Active front steering is an emerging steering technology for passenger cars that realizes a mechatronic superposition of an angle to the hand steering wheel angle that is prescribed by the driver. This contribution describes algorithms, used to ensure -along with others -the overall safety of the system (i.e. preventing hazardous behavior). A kinematic constraint, modelled as a dynamic system, is used to estimate the steering wheel angle. This estimated signal is compared with the measured signal. Using change detection algorithms typical failure patterns of the steering wheel sensor are detected quite easily. Sample results and measurements from a prototype vehicle are presented

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Future Electrical Steering Systems: Realizations with Safety Requirements

Cited by 32 publications

References 1 publication

A Real Time Re-Configurable Steering Simulator for System Design Studies

A Real Time Re-Configurable Steering Simulator for System Design Studies

Implementation and Experimental Verification of Smart Junction Box for Low-Voltage Automotive Electronics in Electric Vehicles

Fault Detection of a Steering Wheel Sensor Signal in an Active Front Steering System

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