Fuzzy-Based Evaluation of a Specific Drive Train

Piros, Attila; Farkas, Zsolt

doi:10.1155/2012/763171

Cited by 5 publications

(3 citation statements)

References 7 publications

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“…For the engine rotation, it is noted that the 380 CVT and 340 FPS presented linear and quadratic equations with the increase in v , respectively (FIGURE 3a). It is also observed that for the 340 FPS it reaches the minimum E (1,662 RPM), the v will be 6 km h -1 , in addition to presenting an E higher than that of the 380 CVT in all evaluated v , corroborating with Piros & Farkas (2012).…”

Section: Discussionsupporting

confidence: 70%

Energy Efficiency of Agricultural Tractors Equipped With Continuously Variable and Full Powershift Transmission Systems

et al. 2022

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The efficiency of agricultural tractor transmission has been improved over the years, with new concepts such as Continuously Variable Transmission (CVT) and Full Powershift (FPS) evolving in advanced technologies. Both options seek to offer the farmer greater operational results with lower energy expenditure, necessitating studies to assess the effectiveness of these technologies and define the best choice for each purpose. The objective of this work was to evaluate the energy efficiency of two tractors equipped with CVT and FPS transmissions. For this, a strip experiment was conducted in a randomized block design, that analyzed, in addition to CVT and FPS transmissions, target velocities of 4, 6, 8 and 10 km h -1 . Operational energy performance parameters were evaluated, such as slippage index, engine rotation, operational velocity, fuel consumption, power available and efficiency on the drawbar, turbo pressure and temperatures of air intake and exhaust gas. Based on the results obtained, the tractor with FPS transmission was more energy efficient in most of the analyzed parameters, requiring 16.31% less in hourly fuel consumption, and providing 16.29% more in the traction bar yield, however, with lower operational velocity compared to the tractor with CVT transmission.

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Section: Discussionsupporting

confidence: 70%

Energy Efficiency of Agricultural Tractors Equipped With Continuously Variable and Full Powershift Transmission Systems

et al. 2022

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“…The fuzzy comprehensive evaluation method is an application of membership degree instead of the cost function. This method can solve fuzzy and hard-to-quantify problems [23, 24].…”

Section: The Evaluation Methodsmentioning

confidence: 99%

Test and Evaluation of Autonomous Ground Vehicles

Sun

Xiong

Song

et al. 2014

Advances in Mechanical Engineering

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A preestablished test and evaluation system will benefit the development of autonomous ground vehicles. This paper proposes a design method for a scientific and comprehensive test and evaluation system for autonomous ground vehicles competitions. It can better guide and regulate the development of China's autonomous ground vehicles. The test and evaluation system includes the test contents, the test environment, the test methods, and the evaluation methods. Using a hierarchical design approach, the test content is designed to be stage by stage, moving from simplicity to complexity and from individual modules to the entire vehicle. The hierarchical test environment is established according to the levels of test content. The test method based on multilevel platforms and sensors is put forward to ensure the accuracy of test results. A fuzzy comprehensive evaluation method combined with analytic hierarchy process (AHP) is used for the comprehensive evaluation which can quantitatively evaluate the individual module and the overall technical performance of autonomous ground vehicles. The proposed test and evaluation system has been successfully applied to real autonomous ground vehicle competitions.

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“…(12) is valid, where i(ψ) is the function of the changing ratio. The function of the ratio can be created analytically or with optimization [12]. As seen in Eq.…”

Section: Changing Profile Shiftmentioning

confidence: 99%