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Journal articles on the topic 'Steering logics'

Author: Grafiati

Published: 4 June 2021

Last updated: 7 February 2022

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1

Angelo Bonfitto, Stefano Feraco, Marco Rossini, and Francesco Carlomagno. "Fuzzy Logic Method for the Speed Estimation in All-Wheel Drive Electric Racing Vehicles." Communications - Scientific letters of the University of Zilina 23, no. 2 (April 1, 2021): B117—B129. http://dx.doi.org/10.26552/com.c.2021.2.b117-b129.

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This paper presents a method for the vehicle speed estimation with a Fuzzy Logic based algorithm. The algorithm acquires the measurements of the yaw rate, steering angle, wheel velocities and exploits a set of five Fuzzy Logics dedicated to different driving conditions. The technique estimates the speed exploiting a weighted average of the contributions provided by the longitudinal acceleration and the credibility assigned by the Fuzzy Logics to the measurements of the wheels’ speed. The method is experimentally evaluated on an all-wheel drive electric racing vehicle and is valid for the front and rear wheel drive configurations. The experimental validation is performed by comparing the obtained estimation with the result of computing the speed as the average of the linear velocity of the four wheels. A comparison to the integral of the vehicle acceleration over time is reported.

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2

Ildar Gabitov, Andrei Negovora, Azamat Valiev, Vladimir Ilin, Danila Plotnikov, and Mahmut Razyapov. "Assessment of Technical Condition of an Accumulator Common Rail Injector by Temperature of its Units." Communications - Scientific letters of the University of Zilina 23, no. 2 (April 1, 2021): B130—B138. http://dx.doi.org/10.26552/com.c.2021.2.b130-b138.

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This paper presents a method for the vehicle speed estimation with a Fuzzy Logic based algorithm. The algorithm acquires the measurements of the yaw rate, steering angle, wheel velocities and exploits a set of five Fuzzy Logics dedicated to different driving conditions. The technique estimates the speed exploiting a weighted average of the contributions provided by the longitudinal acceleration and the credibility assigned by the Fuzzy Logics to the measurements of the wheels’ speed. The method is experimentally evaluated on an all-wheel drive electric racing vehicle and is valid for the front and rear wheel drive configurations. The experimental validation is performed by comparing the obtained estimation with the result of computing the speed as the average of the linear velocity of the four wheels. A comparison to the integral of the vehicle acceleration over time is reported.

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3

Stenius, Kerstin, and Jessica Storbjork. "Balancing welfare and market logics: Procurement regulations for social and health services in four Nordic welfare states." Nordic Studies on Alcohol and Drugs 37, no. 1 (December 26, 2019): 6–31. http://dx.doi.org/10.1177/1455072519886094.

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Aim: In increasingly market-oriented welfare regimes, public procurement is one of the most important instruments for influencing who produces which services. This article analyses recent procurement regulations in four Nordic countries from the point of view of addiction treatment. The implementation of public procurement in this field can be viewed as a domain struggle between the market logic and the welfare logic. By comparing the revision of the regulations after the 2014 EU directives in Denmark, Finland, Norway, and Sweden, we identify factors affecting the protection of a welfare logic in procurement. We discuss the possible effects of different procurement regulations for population welfare and health. Data and theoretical perspective: The study is based on the recently revised procurement laws in the four countries, and adherent guidelines. The analysis is inspired by institutional logics, looking at patterns of practices, interests, actors, and procurement as rules for practices. Results: Procurement regulations are today markedly different in the four countries. The protection of welfare and public health aspects in procurement – strongest in Norway – is not solely dependent on party political support. Existing service providers and established steering practices play a crucial role. Conclusion: In a situation where market steering has become an established practice and private providers are strongly present, it can be difficult to introduce strong requirements for protection of welfare and population health in procurement of social services.

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4

Chen, Ze Yu, and Guang Yao Zhao. "Fuzzy Control Strategy and Simulation for Dual Electric Tracked Vehicle Motion Control." Applied Mechanics and Materials 130-134 (October 2011): 309–12. http://dx.doi.org/10.4028/www.scientific.net/amm.130-134.309.

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Based on tracked vehicle dynamics analysis, a fuzzy control strategy is proposed in this paper for the dual electric tracked vehicle motion control. The inputs of fuzzy system are driver acceleration, braking and steering signals besides vehicle velocity feedback signal, while outputs are dual motors’ torque commands and mechanical braker’s target force. Control strategy contains two fuzzy logics, one is for steering and straight-line running control, the other is for braking control section. Simulation results show that the fuzzy control strategy presented here is correct and effective for electric tracked vehicle motion control.

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Tota, Antonio, Enrico Galvagno, and Mauro Velardocchia. "Analytical Study on the Cornering Behavior of an Articulated Tracked Vehicle." Machines 9, no. 2 (February 9, 2021): 38. http://dx.doi.org/10.3390/machines9020038.

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Articulated tracked vehicles have been traditionally studied and appreciated for the extreme maneuverability and mobility flexibility in terms of grade and side slope capabilities. The articulation joint represents an attractive and advantageous solution, if compared to the traditional skid steering operation, by avoiding any trust adjustment between the outside and inside tracks. This paper focuses on the analysis and control of an articulated tracked vehicle characterized by two units connected through a mechanical multiaxial joint that is hydraulically actuated to allow the articulated steering operation. A realistic eight degrees of freedom mathematical model is introduced to include the main nonlinearities involved in the articulated steering behavior. A linearized vehicle model is further proposed to analytically characterize the cornering steady-state and transient behaviors for small lateral accelerations. Finally, a hitch angle controller is designed by proposing a torque-based and a speed-based Proportional Integral Derivative (PID) logics. The controller is also verified by simulating maneuvers typically adopted for handling analysis.

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6

Benish, Avishai. "The Logics of Hybrid Accountability: When the State, the Market, and Professionalism Interact." ANNALS of the American Academy of Political and Social Science 691, no. 1 (September 2020): 295–310. http://dx.doi.org/10.1177/0002716220965905.

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The delivery of public services increasingly operates under hybrid accountability regimes, but we have much to learn about how these regimes interrelate. I develop a framework for systematic analysis of hybrid public, market, and professional accountability arrangements, looking at the compatibility of their content, steering mechanisms, and relationships. The analysis is informed and illustrated by empirical studies on accountability in welfare state services, which offer evidence on hybrid accountability arrangements. The article concludes by discussing the interplay between accountability regimes and the conditions in which they undermine or reinforce each other. I argue that compatibility between regimes depends on the content of accountability rather than on the accountability mechanisms, and I highlight the importance of the trust between the parties entering into accountability relations and the proximity of their institutional logics.

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7

Mirzaeinejad, Hossein, Mehdi Mirzaei, and Reza Kazemi. "Enhancement of vehicle braking performance on split-μ roads using optimal integrated control of steering and braking systems." Proceedings of the Institution of Mechanical Engineers, Part K: Journal of Multi-body Dynamics 230, no. 4 (November 10, 2016): 401–15. http://dx.doi.org/10.1177/1464419315617332.

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Shorter stopping distance and less deviation from the straight line are two requirements of vehicle safe braking on split-µ roads. The first one is achieved by controlling the longitudinal slip of each wheel at its optimum value calculated by road conditions. However, in order to directly control the vehicle directional stability, a new multivariable controller is optimally developed for integrated active front steering (AFS) and direct yaw moment control. In an efficient way to manage two control inputs, the weights of the integrated optimal control law are online determined by fuzzy logics. These logics are defined using the stability index obtained by the phase plane analysis of nonlinear vehicle model. In this way, the required external yaw moment can be calculated for different driving conditions to only compensate the drawback of AFS for stabilising the vehicle system. The minimum usage of stabilising external yaw moment leads to the less reduction of maximum achievable braking forces of one side wheels and results the shorter stopping distance. By determination of the weighs in limit conditions, the integrated control law easily leads to the stand-alone braking control law. The simulation results carried out using a validated vehicle model demonstrate that the integrated control system has a better braking performance compared with the stand-alone braking system, reported in literature, to attain the shorter stopping distance with less lateral deviation on split-µ roads.

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8

Laffin, Martin. "Explaining reforms: post-New Public Management myths or political realities? Social housing delivery in England and France." International Review of Administrative Sciences 85, no. 1 (February 20, 2018): 45–61. http://dx.doi.org/10.1177/0020852317746223.

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This article examines the assumption that recent reforms in social and public services can be understood as a transition from New Public Management to post-New Public Management. English and French social housing delivery are selected as two cases in which to test out this assumption, for ostensibly these delivery structures share significant cross-national, post-NPM similarities – a movement towards a more ‘enabling’ or steering role for central government, the creation of coordinating agencies, ‘decentralization’ initiatives, the extensive use of public–private arrangements to finance social housing and the involvement of a wide range of extra- and semi-governmental organizations. However, further investigation reveals that these reforms of delivery structures have not been predominantly driven by an unfolding post-NPM managerial or governance logic as the thesis assumes. Rather the reforms have been driven by the partisan electoral and ideological goals of central government policymakers within the context of institutional legacies and entrenched social values. Points for practitioners New Public Management and post-New Public Management have become the conventional wisdom on administrative reforms particularly in a comparative context. This article argues that these ideas reflect an impoverished understanding of public administration given that they assume that change occurs predominantly through the unfolding of managerial and/or governance logics. These logics exclude the critical role of the political parties and other socio-political factors, such as urban unrest, in driving change. This Anglo-French analysis of social housing delivery demonstrates the significance of these political factors in how policymakers define social problems, re-design and implement social housing service delivery systems.

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9

Thunman, Elin. "Managing stress." Qualitative Research in Organizations and Management: An International Journal 10, no. 2 (June 8, 2015): 134–52. http://dx.doi.org/10.1108/qrom-11-2013-1184.

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Purpose – Given the parallel processes of stress development and organisational changes towards increased managerialism, the purpose of this paper is to understand the way in which employees’ stress is perceived and managed in female- and male-dominated sectors, characterised by new management-oriented steering methods. Design/methodology/approach – The paper is based on a thematic analysis of interviews with managers and employees at one Swedish female-dominated work setting and one male-dominated work setting. The paper offers an analysis of how managerial approaches to stress mediate the ways in which employees may come to govern their own subjectivity through stress-management practices. Drawing upon Foucault’s and Rose’s work on governmentality and freedom, these practices are understood as implicated in the everyday exercise of power over the self. Findings – The main finding is that a logic emphasising proactivity was more prevalent at the female-dominated workplace, while a logic emphasising trust was most prevalent at the male-dominated workplace. Both logics perceive self-management and self-realisation as ways to manage stress, but in the proactive regime, self-management and self-realisation tend to turn into new modes of exploitation. Approaches to stress management in the proactive regime in fact seem to further diminish levels of discretion and control, which, according to previous research, are typically already low in female-dominated work. Practical implications – Based on these findings, the study argues for the importance of combining a self-managerial approach with trust in order to avoid turning the individualisation of work into a source of stress at female-dominated workplaces. Originality/value – The paper contributes to a more complex understanding of women’s work stress by highlighting its interconnection with a proactive stress management regime.

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10

Butcher, Siân. "Appropriating rent from greenfield affordable housing: developer practices in Johannesburg." Environment and Planning A: Economy and Space 52, no. 2 (January 7, 2020): 337–61. http://dx.doi.org/10.1177/0308518x19895278.

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‘Affordable housing’ for Johannesburg’s growing middle class is a developmentalist imperative and potentially lucrative market. However, few greenfield developers have found this market profitable. Fundamental to those who have, is control over land and its development. This paper puts heterodox urban land rent theory to work vis-à-vis the logics and practices of these developers. I illustrate how greenfield affordable housing developers work to (re)produce differential and monopoly rents in this context. Differential rents rely on investing in cheap land produced through the city’s racialised geography, and controlling land’s development through vertical integration, dynamic negotiations with local government and development finance institutions, and steering money and people into developments. Monopoly rents rely on the power of developers to act together as a class to secure land, give the appearance of competition and lobby the state in their interests. This power is built through racialised control over land and long personal connections. It is also consolidated by the state’s own land development bureaucracy and preference for ‘mega’ developments and recognisable developers. Together, these developer strategies to accrue differential and monopoly rents demonstrate their active role in the everyday making of land and housing markets. They also demand extensions of heterodox urban land rent theory: first, a more articulated understanding of how class monopoly power over land is built through race, and second, a more contingent analysis of capital’s relations to other actors and institutions, especially the state.

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11

Konold, Dieter, and Thomas Schwietring. "The Great Discrepancy: Political Action, Sustainable Development and Ecological Communication." Politics and Governance 9, no. 1 (February 26, 2021): 131–40. http://dx.doi.org/10.17645/pag.v9i1.3631.

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The term ‘sustainable development’ was coined to denote a political goal some 40 years ago; debates about sustainability date back considerably further. These debates reflect the growing awareness of the destructive effects of human activities on the natural foundations of life. Numerous initiatives have been launched to trigger a turnaround, with the 2030 Agenda and the SDGs being the latest attempt. However, substantial progress has been rather limited thus far. This discrepancy is the subject of the article. Starting from a historical overview of sustainability politics, the argument develops in three steps. First, it is shown that conventional conceptions to promote environmental change fall short in depicting the broader societal context. To provide a comprehensive picture of the challenges related to transformation processes, a theory of the functional differentiation of societies is presented in a second step. A systems theory perspective offers a convincing theoretical explication of the problem. Third, this approach is scrutinized with regard to the political system and the politics of sustainability. The key finding is that the specific functional logics of the different social subsystems must be taken into account when analysing sustainable development and the discrepancy between the aims and ambitions of (global) environmental policy and the visible consequences. On the one hand, the functional differentiation of modern society guarantees its high degree of effectiveness and flexibility. On the other hand, implementing fundamental change, such as a transition towards sustainability, is not simply a question of strategy or of political willingness and steering. Rather, there is a need for more elaborate explanatory instruments. As a result, we argue for a linking of theories of sustainable development and advanced social theory.

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12

Boada, Beatriz L., María Jesús L. Boada, Belén Muñoz, and Vicente Díaz. "STEERING STABILITY BASED ON FUZZY-LOGIC." IFAC Proceedings Volumes 38, no. 1 (2005): 313–18. http://dx.doi.org/10.3182/20050703-6-cz-1902.01940.

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13

Sun, Rong, Sheng Liu, and Lan Yong Zhang. "A Novel Fuzzy Logic PID Algorithm for Submarine Hydraulic Rudder Control." Applied Mechanics and Materials 236-237 (November 2012): 1222–26. http://dx.doi.org/10.4028/www.scientific.net/amm.236-237.1222.

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According to the composition of the submarine hydraulic rudder system, the paper analyzed the different advantages and disadvantages of the rudder type, steering agencies and the hydraulic rudder control system as well as the scope of application. System steering bodies of pump control servo, variable pump displacement control system, steering control system and rudder hydrodynamic interference model were modeled. Fuzzy logic hydraulic servo parameter adjustment method is presented, and simulation analysis of the variable pump displacement control system and steering system. As the system parameter uncertainties and load disturbance, the performance impact of parameter variation and load disturbance simulation analysis.

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14

Ghaemi, Sehraneh, Sohrab Khanmohammadi, and Mohammadali Tinati. "Driver's Behavior Modeling Using Fuzzy Logic." Mathematical Problems in Engineering 2010 (2010): 1–29. http://dx.doi.org/10.1155/2010/172878.

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In this study, we propose a hierarchical fuzzy system for human in a driver-vehicle-environment system to model takeover by different drivers. The driver's behavior is affected by the environment. The climate, road and car conditions are included in fuzzy modeling. For obtaining fuzzy rules, experts' opinions are benefited by means of questionnaires on effects of parameters such as climate, road and car conditions on driving capabilities. Also the precision, age and driving individuality are used to model the driver's behavior. Three different positions are considered for driving and decision making. A fuzzy model calledModel Iis presented for modeling the change of steering angle and speed control by considering time distances with existing cars in these three positions, the information about the speed and direction of car, and the steering angle of car. Also we obtained two other models based on fuzzy rules calledModel IIandModel IIIby using Sugeno fuzzy inference.Model IIandModel IIIhave less linguistic terms thanModel Ifor the steering angle and direction of car. The results of three models are compared for a driver who drives based on driving laws.

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15

Geng, Shu Fang, Qing Feng Peng, and Li Fang Wang. "The Research of Steer by Wire System Based on Fuzzy Logic Control." Applied Mechanics and Materials 55-57 (May 2011): 780–84. http://dx.doi.org/10.4028/www.scientific.net/amm.55-57.780.

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This paper describes SBW system structure and principle, for different vehicle speed inputs and steering wheel angle step inputs, the simulation model run in Simulink, and obtain yaw rate response characteristics, so the steering system control requirements is proposed, establishes fuzzy logic control system. This control strategy can improve vehicle’s stability and fast respond characteristics. Simulations are carried out to gain a series of transmission ratio curves, show the validity of the proposed fuzzy logic control method.

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16

Liu, Hui Yuan, Li Hua Liang, and Lan Yong Zhang. "Research on Control Scheme of Submarine Hydraulic Rudder." Applied Mechanics and Materials 329 (June 2013): 452–56. http://dx.doi.org/10.4028/www.scientific.net/amm.329.452.

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According to the composition of the submarine hydraulic rudder system, the paper analyzed the different advantages and disadvantages of the rudder type, steering agencies and the hydraulic rudder control system as well as the scope of application. System steering bodies of pump control servo, variable pump displacement control system, steering control system and rudder hydrodynamic interference model were modeled. Fuzzy logic hydraulic servo parameter adjustment method is presented, and simulation analysis of the variable pump displacement control system and steering system. As the system parameter uncertainties and load disturbance, the performance impact of parameter variation and load disturbance simulation analysis.

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17

Risse, Thomas. "Global Governance and Communicative Action." Government and Opposition 39, no. 2 (2004): 288–313. http://dx.doi.org/10.1111/j.1477-7053.2004.00124.x.

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AbstractThis article discusses arguing and communicative action as a significant tool for non-hierarchical steering modes in global governance. Arguing is based on a logic of action that differs significantly from both the rational choice-based ‘logic of consequentialism’, and from the ‘logic of appropriateness’ theorized by sociological institutionalism. Arguing constitutes a learning mechanism by which actors acquire new information, evaluate their interests in light of new empirical and moral knowledge, and – most importantly – can reflexively and collectively assess the validity claims of norms and standards of appropriate behaviour. As a result, arguing and persuasion constitute tools of ‘soft steering’ that might improve both the legitimacy problems of global governance by providing voice opportunities to various stakeholders and the problem-solving capacity of governance institutions through deliberation.

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18

Nagpara, Bharat H. "A 45 nm 6 Bit Low Power Current Steering Digital to Analog Converter Using GDI Logic." TELKOMNIKA Indonesian Journal of Electrical Engineering 16, no. 1 (October 1, 2015): 46. http://dx.doi.org/10.11591/tijee.v16i1.1586.

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<p><strong><em> </em></strong>In this paper, The Design and Implementation low power Current Steering Digital to Analog Converter in 45 nm technology using GDI Logic using TANNER TOOL, V15 is presented. This architecture gives the most optimized results in terms of speed, resolution and power. The designed 6-bit DAC operates with two supply voltages, 1 V and 3.3 V. The simulation result shows the transient analysis waveforms of current Steering DAC. The average power dissipation is 364.06 μW. The tool used for simulation is Tanner S-Edit and T-Spice. Comparisons show that using GDI logic, it consists low power as compare to the CMOS logic.</p>

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19

Mukherjee, A., and M. Marek-Sadowska. "Wave steering to integrate logic and physical syntheses." IEEE Transactions on Very Large Scale Integration (VLSI) Systems 11, no. 1 (February 2003): 105–20. http://dx.doi.org/10.1109/tvlsi.2003.811100.

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20

Krishna, S., S. Narayanan, and S. Denis Ashok. "Control of Yaw Disturbance Using Fuzzy Logic Based Yaw Stability Controller." International Journal of Vehicular Technology 2014 (February 4, 2014): 1–10. http://dx.doi.org/10.1155/2014/754218.

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Yaw stability is an important consideration for the vehicle directional stability and handling behavior during emergency maneuvers. In order to maintain the desired path of the vehicle, in presence of disturbances due to cross wind, different road conditions, and tire deflections, a fuzzy logic based yaw stability controller is proposed in this paper. Proposed control system receives yaw rate error, steering angle given by the driver, and side slip angle as inputs, for calculating the additional steering angle as output, for maintaining the yaw stability of the vehicle. As the side slip angle cannot be measured directly in a vehicle, it was estimated using a model based Kalman observer. A two-degrees-of-freedom vehicle model is considered in the present work. The effect of disturbance on yaw rate and yaw rate error of the vehicle is simulated for sinusoidal, step maneuver and compared with the existing fuzzy control system which uses two inputs such as steering angle and yaw rate. The simulation results show better performance of the proposed fuzzy based yaw controller as compared with existing control system. Proposed fuzzy based yaw stability controller can be implemented in steer-by-wire system for an active front steering of a road vehicle.

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Wang, Jinxiang, Zhenwu Fang, Mengmeng Dai, Guodong Yin, Jingjing Xia, and Pu Li. "Robust steering assistance control for tracking large-curvature path considering uncertainties of driver’s steering behavior." Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering 235, no. 7 (January 4, 2021): 2013–28. http://dx.doi.org/10.1177/0954407020976827.

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A human-machine shared steering control is presented in this paper for tracking large-curvature path, considering uncertainties of driver’s steering characteristics. A driver-vehicle-road (DVR) model is proposed in which uncertain characteristic parameters are defined to describe the human driver’s steering behaviors in tracking large-curvature path. Then the radial basis function neural network (RBF) is used to estimate parameters of different drivers’ characteristics and to obtain the boundaries of these parameters. Parameter uncertainties of the driver’s steering characteristics and time-varying vehicle speed of the DVR model are handled with the Takagi-Sugeno (T-S) fuzzy logic. And these parameter uncertainties are considered in the design of the shared steering controller. Then based on the DVR model, a T-S fuzzy full-order dynamic compensator with D-pole assignment is designed to assist driver’s steering for tracking path with large curvature. Simulation results show that the proposed controller can provide individual levels of steering assistance in path following according to driver’s proficiency, and can improve driving comfort significantly.

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22

Delavarpour, Nadia, Sulaymon Eshkabilov, Thomas Bon, John Nowatzki, and Sreekala Bajwa. "The Tractor-Cart System Controller with Fuzzy Logic Rules." Applied Sciences 10, no. 15 (July 29, 2020): 5223. http://dx.doi.org/10.3390/app10155223.

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Post-planting operations (e.g., fertilizing, cover crop planting) with a tractor and towed cart in standing crop (e.g., corn) are challenging. Tractor and cart should be kept within a certain boundary region to avoid crop damage. An automatic guidance system on the tractor is the solution of the issue; however, tractor’s auto-guidance does not guarantee the cart clear and exact following of the tractor. There is insufficient research in automatic control of a towed cart. Therefore, this research was undertaken to design a controller to manage lateral and longitudinal positions of a tractor-towed cart. A novel fuzzy logic based adaptive controller algorithm is proposed to control tractor-cart system steering with additional steering torque for the cart, ensuring that the entire system follows the desired trajectory within the set constraints. A hydraulic drive design for the cart was developed with a control principle to closely follow the tractor’s path and minimize damage to the plants. The proposed steering algorithm and designed controller were validated with interchangeable trajectory patterns via simulations in MATLAB/Simulink. The results demonstrated that the performances of the designed hydraulic drive and the accuracy of the proposed control algorithm were appropriate to steer the towed-cart with minimal damages on plant rows.

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23

Zhang, Yu Fang, Xiao Nian Wang, Ping Jiang, and Jin Zhu. "A Fuzzy Logic Scheme for Lateral Control of an Unmanned Vehicle." Advanced Materials Research 1046 (October 2014): 250–54. http://dx.doi.org/10.4028/www.scientific.net/amr.1046.250.

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The purpose of unmanned vehicle lateral control is to track a desired trajectory in a small error, in order to achieve a stable tracking under different pavements and wind resistance conditions. This paper presents a vehicle lateral control scheme based on fuzzy logic control. A simplified vehicle lateral dynamics model is first obtained by linearizing the original 6-DOF vehicle model, and then the lateral control is decomposed into two modules: steering wheel angle control and steering wheel speed control. Fuzzy logic control for the two modules is developed and simulated by using CarSim and Simulink. The results demonstrate that the fuzzy controller can achieve a high tracking accuracy with a good dynamic performance.

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Borrero-Guerrero, Henry, Rafael Bueno-Sampaio, and Marcelo Becker. "Fuzzy Control Strategy Applied to Adjustment of Front Steering Angle of a 4WSD Agricultural Mobile Robot." Lámpsakos, no. 7 (June 16, 2012): 31. http://dx.doi.org/10.21501/21454086.842.

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This paper presents the preliminary studies of the control strategy based in fuzzy logic, projected for the steering system of AGRIBOT project that consist of a wheeled autonomous mobile robotic in real scale endowed with four independent steering and driven wheels (4WSD). In this work we present a preliminary fuzzy controller design applied to front steering angle, using a multivariable plant which incorporates simplified linear model of lateral dynamics of a vehicle whose input are linear combination of rear and front steering angles. The fuzzy control strategy was decided because provides flexible way to deploy with embedded systems. Simulations are used to illustrate the designed controller performance. We use Ackerman geometry to trace front steering angle that allows the vehicle to perform correctly a given maneuver preserving a minimum level of stability and maneuverability. The goal is to establish a relationship between steering input commands and the control commands to the actuators so that it is possible to adjust the attitude of the actuators over the movement axis, as the trajectory change.

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25

Dutta, Saikat, and Seung-Bok Choi. "Control of a shimmy vibration in vehicle steering system using a magneto-rheological damper." Journal of Vibration and Control 24, no. 4 (June 9, 2016): 797–807. http://dx.doi.org/10.1177/1077546316652786.

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Vehicle stability largely depends on the vibration of the steering system. A four degrees of freedom dynamic model of an automotive steering system with a magneto-rheological damper is presented in this study. Firstly, an equivalent mathematical model of the steering system is developed. The nonlinear equation of motion obtained from the dynamic model is then linearized around its equilibrium point to make it suitable for the design of an appropriate controller for vibration suppression. In this work, a new type of adaptive sliding mode controller is designed for control of the magneto-rheological damper and hence to control unwanted vibration. It is shown that the proposed control logic is very effective for settling steering motion near the equilibrium position. The shimmy vibrations of the wheels are reduced by a considerable amount and the steering system becomes stable. In addition, a comparative work is undertaken between the proposed controller and an ordinary sliding mode controller to demonstrate the advantage of the proposed methodology.

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26

Leve, Frederick A., and Norman G. Fitz-Coy. "Hybrid Steering Logic for Single-Gimbal Control Moment Gyroscopes." Journal of Guidance, Control, and Dynamics 33, no. 4 (July 2010): 1202–12. http://dx.doi.org/10.2514/1.46853.

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27

Lehmann, T. "Using current steering logic in mixed analogue-digital circuits." Electronics Letters 34, no. 17 (1998): 1660. http://dx.doi.org/10.1049/el:19981177.

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28

Rastelli, Joshué Pérez, and Matilde Santos Peñas. "Fuzzy logic steering control of autonomous vehicles inside roundabouts." Applied Soft Computing 35 (October 2015): 662–69. http://dx.doi.org/10.1016/j.asoc.2015.06.030.

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29

Mitov, Alexander, Jordan Kralev, Tsonyo Slavov, and Ilcho Angelov. "Comparison of Model Predictive Control (MPC) and Linear-Quadratic Gaussian (LQG) Algorithm for Electrohydraulic Steering Control System." E3S Web of Conferences 207 (2020): 04001. http://dx.doi.org/10.1051/e3sconf/202020704001.

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The paper compares the performance of two embedded controllers applied in electrohydraulic steering systems – model predictive controller (MPC) and linear-quadratic Gaussian (LQG) controller with Kalman filtering for state estimation. Both controllers are designed on the basis of single input multiple output “black box” model obtained via identification approach. The controllers are implemented into industrial logic controller for mobile applications and their workability is experimentally checked with a laboratory model of a steering system for non-road mobile machinery. The results corresponding to investigation of performance of the closed-loop system are presented.

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30

Huh, Kunsoo, and Joonyoung Kim. "Active Steering Control Based on the Estimated Tire Forces." Journal of Dynamic Systems, Measurement, and Control 123, no. 3 (April 6, 1999): 505–11. http://dx.doi.org/10.1115/1.1387246.

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Steered vehicles on slippery roads tend to slide outward with less lateral force than on high friction roads. In this paper, an active steering control method is proposed such that the vehicles on slippery roads are steered as if they are driven on high friction roads. In order to estimate the lateral force at each tire, a monitoring model is developed utilizing not only the vehicle dynamics but also the roll motion. The estimated lateral force is compared with the optimal reference force and the difference is compensated by the active steering controller. A fuzzy logic rule is designed for the active controller and its performance is evaluated on a steering Hardware-In-the-Loop Simulation (HILS) system. Steering results on slippery curved and sinusoidal roads demonstrate the effectiveness of the proposed controller. The drivers with the controller can steer the vehicles as if they are always driving on the high friction road, because the deviation from the high friction road is accommodated by the proposed steering controller. This method can be realized with the steer-by-wire concept and is promising as an active safety technology.

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31

Lin, Chern-Sheng, Chia-Chang Chang, and Wei-Lung Chen. "DESIGN AND APPLICATION OF AN INTERACTIVE WHEELCHAIR TRAINING SYSTEM." Biomedical Engineering: Applications, Basis and Communications 20, no. 06 (December 2008): 377–85. http://dx.doi.org/10.4015/s1016237208000982.

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In this paper we constructed an interactive wheelchair rehabilitation training platform. The roller wheel on the platform is driven mainly by turning the wheelchair, and then the relative position of wheelchair on the screen can be adjusted based on the rotation speed of left and right wheels on the platform. Comparing the digital logic function when two wheels rotate at the same time and judging the variance in digital logic, the steering direction of wheels can be known and be controlled forward or backward. Additionally, the standard digital logic function could be individually judged when left wheel rotates and vice versa, so as to control the steering. Through judging three digital logic functions, the initial time of left wheel, next signal selecting time of left wheel, initial time of right wheel, and next signal selecting time of right wheel could be obtained, then the system can achieve the required direction control function through the judgment formula. The direction control function is indicated by standard digital logic function, so that the user can operate smoothly in the interactive situation software and make an interaction with the computer 3D simulation scene, the patient would have rehabilitation training through various 3D simulation real exteriors. This study not only provides basic trainings but also records the service behavior of wheelchair users, so that the rehabilitation consultant would have reference for the future diagnosis.

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Dang, Qingqing, Lei Jin, and Shijie Xu. "Novel Multiobjective Steering Logic for Variable-Speed Control Moment Gyroscopes." Journal of Guidance, Control, and Dynamics 40, no. 12 (December 2017): 3339–47. http://dx.doi.org/10.2514/1.g002874.

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Wie, Bong. "Singularity Escape/Avoidance Steering Logic for Control Moment Gyro Systems." Journal of Guidance, Control, and Dynamics 28, no. 5 (September 2005): 948–56. http://dx.doi.org/10.2514/1.10136.

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Lappas, V., and B. Wie. "Robust Control Moment Gyroscope Steering Logic with Gimbal Angle Constraints." Journal of Guidance, Control, and Dynamics 32, no. 5 (September 2009): 1662–66. http://dx.doi.org/10.2514/1.43806.

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A. Aldair, Ammar. "A Self Learning Fuzzy Logic Controller for Ship Steering System." Iraqi Journal for Electrical And Electronic Engineering 8, no. 1 (December 28, 2012): 25–34. http://dx.doi.org/10.33762/eeej.2012.79716.

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36

Szosland, A. "Fuzzy logic approach to four-wheel steering of motor vehicle." International Journal of Vehicle Design 24, no. 4 (2000): 350. http://dx.doi.org/10.1504/ijvd.2000.005197.

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37

Ding, Nenggen, and Saied Taheri. "Application of Recursive Least Square Algorithm on Estimation of Vehicle Sideslip Angle and Road Friction." Mathematical Problems in Engineering 2010 (2010): 1–18. http://dx.doi.org/10.1155/2010/541809.

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A recursive least square (RLS) algorithm for estimation of vehicle sideslip angle and road friction coefficient is proposed. The algorithm uses the information from sensors onboard vehicle and control inputs from the control logic and is intended to provide the essential information for active safety systems such as active steering, direct yaw moment control, or their combination. Based on a simple two-degree-of-freedom (DOF) vehicle model, the algorithm minimizes the squared errors between estimated lateral acceleration and yaw acceleration of the vehicle and their measured values. The algorithm also utilizes available control inputs such as active steering angle and wheel brake torques. The proposed algorithm is evaluated using an 8-DOF full vehicle simulation model including all essential nonlinearities and an integrated active front steering and direct yaw moment control on dry and slippery roads.

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Li, Gang, Sucai Zhang, Lei Liu, Xubin Zhang, and Yuming Yin. "Trajectory Tracking Control in Real-Time of Dual-Motor-Driven Driverless Racing Car Based on Optimal Control Theory and Fuzzy Logic Method." Complexity 2021 (April 29, 2021): 1–16. http://dx.doi.org/10.1155/2021/5549776.

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To improve the accuracy and timeliness of the trajectory tracking control of the driverless racing car during the race, this paper proposes a track tracking control method that integrates the rear wheel differential drive and the front wheel active steering based on optimal control theory and fuzzy logic method. The model of the lateral track tracking error of the racing car is established. The model is linearized and discretized, and the quadratic optimal steering control problem is constructed. Taking advantage of the differential drive of dual-motor-driven racing car, the dual motors differential drive fuzzy controller is designed and integrated driving with active steering control. Simulation analysis and actual car verification show that this integrated control method can ensure that the car tracks different race tracks well and improve the track tracking control accuracy by nearly 30%.

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Zhang, Shi Jun, and Zi Yang Xu. "Research of Automobile Driving Simulator Control System." Applied Mechanics and Materials 575 (June 2014): 771–74. http://dx.doi.org/10.4028/www.scientific.net/amm.575.771.

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This paper introduce a control system of automobile driving simulator, Using the CPLD (Complex Programmable Logic Device) technology can easily achieve detect the states of ignition equipment, steering equipment, clutch equipment, foot-brake equipment, hand-brake equipment, accelerator equipment, shift equipment etc and drive the instrumentation.

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Patten, William Neff, Hsien-Cheng Wu, and Wei Cai. "Perfect Parallel Parking Via Pontryagin’s Principle." Journal of Dynamic Systems, Measurement, and Control 116, no. 4 (December 1, 1994): 723–28. http://dx.doi.org/10.1115/1.2899271.

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Parallel parking of an automobile can be a frustrating exercise for the driver. A simple, on vehicle control augmentation design for parallel parking is described in the paper. Using a steering control model, parking is cast as an optimal control problem. The minimization of a path length objective function, which was constrained by the bounds on the steering control angle, provided the setting for the problem definition. Pontryagin’s maximum principal was employed to discover a family of optimal trajectories that guaranteed perfect parallel parking. A bang-bang controller logic was shown to result. The design was experimentally tested using a light duty truck outfitted with a drive-by-wire capability.

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Wie, Bong, David Bailey, and Christopher Heiberg. "Singularity Robust Steering Logic for Redundant Single-Gimbal Control Moment Gyros." Journal of Guidance, Control, and Dynamics 24, no. 5 (September 2001): 865–72. http://dx.doi.org/10.2514/2.4799.

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Kim, Ji-Hoon, and Jae-Bok Song. "Control logic for an electric power steering system using assist motor." Mechatronics 12, no. 3 (April 2002): 447–59. http://dx.doi.org/10.1016/s0957-4158(01)00004-6.

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Hai-Feng, Zhou, Yang Jian-Yi, Wang Ming-Hua, and Jiang Xiao-Qing. "Steering light into logic patterns with two-dimensional cascaded multimode waveguide." Chinese Physics 16, no. 3 (February 26, 2007): 740–45. http://dx.doi.org/10.1088/1009-1963/16/3/030.

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Hiok-Tiaq Ng and D. J. Allstot. "CMOS current steering logic for low-voltage mixed-signal integrated circuits." IEEE Transactions on Very Large Scale Integration (VLSI) Systems 5, no. 3 (September 1997): 301–8. http://dx.doi.org/10.1109/92.609873.

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Chang, Shin-Hung, Pin-Yung Chen, Yi-Hua Ting, and Shih-Wei Hung. "Implementation and Control Logic Design of Intelligent Electric Power Steering System." World Electric Vehicle Journal 3, no. 4 (December 25, 2009): 711–18. http://dx.doi.org/10.3390/wevj3040711.

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Nasir, Mojdeh, Chee Peng Lim, Saeid Nahavandi, and Douglas Creighton. "Inclusion of environmental effects in steering behaviour modelling using fuzzy logic." Expert Systems with Applications 41, no. 4 (March 2014): 1901–14. http://dx.doi.org/10.1016/j.eswa.2013.08.086.

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Zhang, Wei Chun, Bing Bing Ma, Xian Bin Du, Bao Hao Pei, and Jie Chen. "Study of Vice-Steering Control System for Training Car." Applied Mechanics and Materials 142 (November 2011): 79–82. http://dx.doi.org/10.4028/www.scientific.net/amm.142.79.

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Based on analyzing the structure and dynamic characteristics of this system, a dynamical mathematical model is established. To overcome the problems when using fuzzy controller or PID controller respectively and increase precision, a P-fuzzy-PID mode controller and a fuzzy PID controller is designed to control the system. The module of simulink which is a part of MATLAB is used to construct a monolithic mould. The fuzzy logic toolbox is used to construct a fuzzy mould. The results of simulation show that the performance of control becomes better by using this design.

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FIELDS, C. H., M. SOKOLICH, S. THOMAS, K. ELLIOT, and J. JENSEN. "Progress toward 100 GHz Logic in InP HBT IC Technology." International Journal of High Speed Electronics and Systems 11, no. 01 (March 2001): 217–43. http://dx.doi.org/10.1142/s0129156401000836.

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Future wideband communications, mm-wave digital synthesis, and digital beam-steering will benefit from digital operation at clock frequencies between 50 and 100 GHz at reasonable power levels. HRL has developed InP-based HBT technology that is capable of supporting these needs. We have demonstrated InP HBTs with cutoff frequencies, ft, over 200 GHz and with f max over 300 GHz as well as fully static dividers operating at 72.8 GHz.

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Kannan, Prema, Senthil Kumar Natarajan, and Subhransu Sekhar Dash. "Design and Implementation of Fuzzy Logic Controller for Online Computer Controlled Steering System for Navigation of a Teleoperated Agricultural Vehicle." Mathematical Problems in Engineering 2013 (2013): 1–10. http://dx.doi.org/10.1155/2013/590861.

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This paper describes design, modeling, simulation, control, and implementation of teleoperated agricultural vehicle using intelligent technique. This vehicle can be used for ploughing, sowing, and soil moisture sensing. Online computer controlled steering system for a vehicle utilizing two independent drive wheels can be used to avoid obstacles and to improve the ability to resist external side forces. To control the steer angles of the nondriven wheels, the mathematical relationships between the drive wheel speeds and the steer angles of the nondriven wheels are used. A fuzzy logic controller is designed to change the drive wheel speeds and to achieve the desired steer angles. Online control of the agricultural vehicle is achieved from a remote place by means of Web Publishing Tool in LabVIEW. IR sensors in the vehicle are used to detect and to avoid the obstacles around. The developed steering angle control algorithm and fuzzy logic controller have been implemented in an agricultural vehicle which depicts that the vehicle performs its operation efficiently and reduces the manpower and becomes advantageous.

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Hunaini, Fachrudin, Imam Robandi, and Nyoman Sutantra. "Sistem Kontrol Optimal Fuzzy-Particle Swarm Optimization." Jurnal Intake : Jurnal Penelitian Ilmu Teknik dan Terapan 9, no. 1 (April 15, 2018): 1–5. http://dx.doi.org/10.32492/jintake.v9i1.720.

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Fuzzy Logic Control (FLC) is a reliable control system for controlling nonlinear systems, but to obtain optimal fuzzy logic control results, optimal Membership Function parameters are needed. Therefore in this paper Particle Swarm Optimization (PSO) is used as a fast and accurate optimization method to determine Membership Function parameters. The optimal control system simulation is carried out on the automatic steering system of the vehicle model and the results obtained are the vehicle's lateral motion error can be minimized so that the movement of the vehicle can always be maintained on the expected trajectory

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