Methodology for conception of cabins of agricultural machines: informational phase applied to a self-propelled sprayer

Baumhardt, Ulisses Benedetti; Alonço, Airton dos Santos; Tenório, Hugo Gabriel Teles; Ferreira, Cristiano Corrêa; Bedin, Paulo Roberto

doi:10.1007/s40430-016-0694-4

Cited by 3 publications

(1 citation statement)

References 3 publications

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“…An advanced sprayer with excellent performance allows for the precise, efficient, and intelligent management of field crops and has the characteristics of high efficiency, low injury risk, field friendliness, good comfort, and mobility. High-clearance self-propelled sprayers are important for spraying and fertilizing crops and are widely used due to their high efficiency, environmental protection capacity, and ease of use Yuki S. et al, 2013;Baumhardt U. B. et al, 2017).…”

Section: Introductionmentioning

confidence: 99%

Auto Load-Levelling Control of a Large Sprayer Chassis Using the Sliding Mode Method

Chen

Zhang

et al. 2021

INMATEH

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When a sprayer travels on a ramp or a rough road, the load exerted on each wheel changes. If an unbalanced wheel load is maintained for long periods of time, the wheels may slip, the sprayer’s manoeuvrability is affected, and a rollover accident may occur. In this study, the air suspension of a self-propelled sprayer chassis was investigated, and the potential load imbalance conditions of the sprayer suspension were analysed. A mathematical model of the inflation/deflation of the suspension was established based on air nonlinear thermodynamics and vertical dynamics theory and a ¼-scale vertical dynamics model of the sprayer chassis was developed. A control strategy to balance the sprayer’s wheel load was developed. Considering the nonlinear characteristics of the air suspension, a sliding mode variable structure control method was used to balance the wheel load. Simulation experiments were conducted under different working conditions. The simulation results showed that the sliding mode variable structure control provided good control response and precision. The proposed auto load-levelling controller was tested under different working conditions, including different roll and pitch angles and navigating a rough road; the controller successfully changed the load on each spring to ensure that the sprung mass of the suspension was equal and the wheel load was balanced. The results of this study provide reference information for auto load-levelling control of large sprayers.

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Section: Introductionmentioning

confidence: 99%

Auto Load-Levelling Control of a Large Sprayer Chassis Using the Sliding Mode Method

Chen

Zhang

et al. 2021

INMATEH

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Height stability control of a large sprayer body based on air suspension using the sliding mode approach

Chen

Zhang

Mao

et al. 2020

Information Processing in Agriculture

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Differences in Serbian and Libyan crane operators’ anthropometric measurements and cabin interior space modeling

Brkić

Veljković

Spasojević-Brkić

et al. 2021

WOR

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BACKGROUND: Previous research has shown that the collection and analysis of crane operators’ anthropometric characteristics is very important for operators’ comfort, health and working ability and also from the aspect of performance, productivity and safety. OBJECTIVE: The first aim of this survey is to collect up-to-date anthropometric data of crane operators in Serbia and to collect those data for the first time in Libya. The second aim of this survey is to compare the collected data. The third aim is to model the interior space necessary to accommodate operators in the cabins they operate in Serbia and Libya. METHODS: Standing height, sitting height, lower leg length, upper leg length, shoulder width, hip breadth, arm length, foot length and weight data were collected of 83 Serbian and 50 Libyan crane operators. Descriptive statistics, correlation analysis and tests for differences between variables were conducted to examine differences between Serbian and Libyan crane operators and enable further modeling. The modeling of the cabin interior was done using both univariate and multivariate operators’ models from both samples. RESULTS: There are only four common correlations between variables for both samples. The only measurement without statistical differences is shoulder width. Serbian crane operators have statistically higher values of almost all measurements in comparison to Libyans. The minimal cabin interior space dimensions are 1207×1080×1884 mm for Serbian operators and 1106×1040×1790 mm for Libyan operators when using univariate approach, while multivariate approach provides more precise and comfortable accommodation within 1327×1123×1926 mm for Serbian operators and 1203×1090×1830 mm for Libyan operators. Accordingly, our survey shows that percentile models include less than the intended population proportion in the design problem with few dimensions and depends on correlations among them. CONCLUSIONS: A number of problems are solved through modeling the crane operator workspace and it has been shown that cabins with different dimensions have to be offered to Serbian and Libyan markets.

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Methodology for conception of cabins of agricultural machines: informational phase applied to a self-propelled sprayer

Cited by 3 publications

References 3 publications

Auto Load-Levelling Control of a Large Sprayer Chassis Using the Sliding Mode Method

Auto Load-Levelling Control of a Large Sprayer Chassis Using the Sliding Mode Method

Height stability control of a large sprayer body based on air suspension using the sliding mode approach

Differences in Serbian and Libyan crane operators’ anthropometric measurements and cabin interior space modeling

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