Active steering unit with integrated ACC for X-by-wire vehicles using a joystick as H.M.I.

Kelber, C.R.; Webber, W.; Gomes, G.K.; Lohmann, M.A.; Rodrigues, M.S.; Ledur, D.

doi:10.1109/ivs.2004.1336376

Cited by 12 publications

(3 citation statements)

References 4 publications

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“…Candidate solutions for mimicking the steering feel [9][10][11][12][13][14][15][16][17] have ranged from direct instrumented-pickup and feedback of road-wheel interactions (using accelerometers/ force-sensors) to steering torque prediction schemes based on mathematical dynamics models (of tire-road, suspension, power-steering systems) in conjunction with selected real-time measurements. While the latter set of approaches offer the greatest promise from the view point of accuracy and fidelity, real-time implementations at high sampling rates in noisy environments pose challenges.…”

Section: Model Developmentmentioning

confidence: 99%

Study of Vehicle Dynamic Modeling Fidelity on Haptic Collaboration in Steer-by-Wire Systems

Naik

Lee

Krovi

2007

Volume 9: Mechanical Systems and Control, Parts A, B, and C

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The Steer-By-Wire (SBW) paradigm for vehicle control offers many advantages over traditional use of mechanical steering systems but comes at the cost of loss of proprioception (“road feel”). To this end, haptic interfaces for SBW systems have been proposed to restore the intimacy of interactive control back to the driver. However, the degree of realism for the interaction is dependent on the fidelity of the underlying computational vehicle dynamics model. Hence we focus on quantitative comparative testing of the role of vehicle dynamics modeling fidelity for haptic SBW tasks. Additionally the SBW paradigm can simplify implementation of shared/collaborative control (steering) of the underlying mechanical system (vehicle). Possibilities range from sharing of control between multiple individual users or between user and automation technology. Performance evaluation of 3 modes of shared control vs. individual control of driving was carried out and preliminary analysis of results is presented in the paper.

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Section: Model Developmentmentioning

confidence: 99%

Study of Vehicle Dynamic Modeling Fidelity on Haptic Collaboration in Steer-by-Wire Systems

Naik

Lee

Krovi

2007

Volume 9: Mechanical Systems and Control, Parts A, B, and C

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“…X-by-wire (Xbw) technology offers the opportunity for developing vehicle dynamics and driver-vehicle interface (human-machine interface (HMI)) with enormous flexibility. 1,2 The application of Xbw technology to vehicle steering system gives birth to the so-called steerby-wire (Sbw) system. In such a system, the mechanical linkage between vehicle steering wheel and front road wheels is replaced with electronic controllers and actuators.…”

Section: Introductionmentioning

confidence: 99%

Design of a variable steering ratio for steer-by-wire vehicle with a joystick

Zheng

2017

Advances in Mechanical Engineering

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Steer-by-wire system has replaced the conventional mechanical linkages with electronic actuators. In this article, a joystick is utilized to substitute the conventional steering wheel and study the variable steering ratio design methods in this new human-machine interface. With this structure of steer-by-wire system, the steering angle and torque ratio can be designed flexibly. A dynamic model of joystick of steer-by-wire system is built based on bilateral control scheme. Through comparing the vehicle steering performance of joystick with steering wheel, three conventional steering ratio design methods are studied that are speed-dependent, speed-and angle-dependent and constant yaw rate gain. The drawbacks are analysed by three kinds of conventional steering ratio, and a novel variable yaw rate gain steering ratio design method is investigated. A driving simulator is used to verify and compare these steering ratio design methods. The computer simulation and experimental test results demonstrate that the variable yaw rate gain steering ratio design method can effectively guarantee vehicle steering performance.

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“…O tempo de execução médio do sistema de detecção, avaliado através de várias sequências é apresentado na Tabela 4: interface convencional de volante ou pedais (C. R. Kelber, 2004).…”

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Projeto de um sistema embarcado de predição de colisão e pedestres baseado em computação reconfigurável

Martinez¹

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This work proposes an embedded system to detect pedestrians using reconfigurable computing making the image acquisition through a mono-camera attached to a vehicle in an urban environment. This work is motivated by the need to reduce the number of traffic accidents, even with government support, each year hundreds of people become victims thus bringing great damage to the economy. As a result, there is also a global concern of scientists to promote economically viable solutions that will contribute to reducing these accidents. A significant issue is related to the speed of response of the human brain to recognize and or to make decisions in situations of danger. This feature generates a demand for technological solutions aimed at helping people to drive vehicles in several respects. The system hardware was developed in FPGA and divided into interconnected blocks. First, for the pretreatment of the video, was built a block for data conversion from the camera to grayscale, then a simplified block for vertical stabilization dynamic video. To detection, two blocks were built, one for binary motion detection and one for a BLOB detection. To classify, was built one block to identify the size of the object in motion by the proportionality and making the selection. The tests in real environment of this system showed great results for a maximum speed of 30 km / h.

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Active steering unit with integrated ACC for X-by-wire vehicles using a joystick as H.M.I.

Cited by 12 publications

References 4 publications

Study of Vehicle Dynamic Modeling Fidelity on Haptic Collaboration in Steer-by-Wire Systems

Study of Vehicle Dynamic Modeling Fidelity on Haptic Collaboration in Steer-by-Wire Systems

Design of a variable steering ratio for steer-by-wire vehicle with a joystick

Projeto de um sistema embarcado de predição de colisão e pedestres baseado em computação reconfigurável

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