Modelling and simulation of the dynamic performance of a no-till seeding assembly with a semi-active damper

Sharipov, Galibjon M.; Paraforos, Dimitrios S.; Griepentrog, Hans W.

doi:10.1016/j.compag.2017.05.010

Cited by 10 publications

(10 citation statements)

References 15 publications

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“…As this has been reported in a previous work by the authors of reference [24], by modelling and simulating the dynamic motion behavior of the coulter, when the latter is equipped with an MR damper, the dynamic response of the seeder in terms of the amplitudes of the reaction forces and the vertical displacements was significantly improved. This was followed by the application of the MR damper on the coulter assembly, where the dynamics of the assembly were also captured by leveraging the information from the attached sensors [25].…”

Section: Introductionsupporting

confidence: 67%

“…The first case was for the original coulter assembly, where the packer wheel was considered as a passively controlled system (see Figure 2a). Detailed information can be found in previous work by the authors in reference [24]. In the second case, the semi-active MR damper, as a controlled mass-spring-damper system, was designed to be located between the wheel shank and the packer wheel, having an extra shank ( Figure 2b).…”

Section: Dynamics Of the Developed Assemblymentioning

confidence: 99%

“…where x w is the shift in the position of the wheel in the vertical plane, in [m]; x p is the field profile that the wheel followed; K w is the stiffness coefficient of the rubber tyre [N m −1 ] and C w is the damping coefficient [N s m −1 ]. More detailed information on defining the stiffness and the damping coefficient of the wheel-tire can be found in reference [24]. In this model, the horizontal force F d was not considered in the modelling due to its minor effect on the vertical motion behavior of the assembly.…”

Section: Dynamics Of the Developed Assemblymentioning

confidence: 99%

“…Many different hysteresis models could be applied for the MR damper model to address its hysteresis and nonlinear behavior [29,30]. The Bouc-Wen model (Figure 3) has been proven to be outperforming over the other models [24] when investigating the nonlinear behavior of the MR damper. In the developed model (Figure 2b), F c is the control force of the MR damper resulting from the pre-yield stress of the damper fluid.…”

Section: Bouc-wen Modelmentioning

confidence: 99%

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Validating the Model of a No-Till Coulter Assembly Equipped with a Magnetorheological Damping System

2019

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Variability in soil conditions has a significant influence on the performance of a no-till seeder in terms of an inconsistency in the depth of seeding. This occurs due to the inappropriate dynamic responses of the coulter to the variable soil conditions. In this work, the dynamics of a coulter assembly, designed with a magnetorheological (MR) damping system, were simulated, in terms of vertical movement and ground impact. The developed model used measured inputs from previously performed experiments, i.e., surface profiles and vertical forces. Subsequently, the actual coulter was reassembled with an MR damping system. Multiple sensors were attached to the developed coulter in order to capture its motion behavior together with the profiles, which were followed by the packer wheel. With the aim to validate the correctness of the simulation model, the simulation outputs, i.e., pitch angles and damper forces, were compared to the measured ones. The comparison was based on the root-mean-squared error (RMSE) in percentage, the root-mean-squared deviation (RMSD), and the correlation coefficient. The average value of the RMSE for the pitch angle, for all currents applied on the MR damper, was below 10% and 8% for the speeds of 10 km h−1 and 12 km h−1, respectively. For the damper force, these figures were 15% and 13%. The RMSD was below 0.5 deg and 1.3 N for the pitch angle and the damper force, respectively. The correlation coefficient for all datasets was above 0.95 and 0.7 for the pitch angle and the damper force, respectively. Since the damper force indicated a comparatively lower correlation in the time domain, its frequency domain and coherence were investigated. The coherence value was above 0.9 for all datasets.

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Section: Introductionsupporting

confidence: 67%

Section: Dynamics Of the Developed Assemblymentioning

confidence: 99%

Section: Dynamics Of the Developed Assemblymentioning

confidence: 99%

Section: Bouc-wen Modelmentioning

confidence: 99%

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Validating the Model of a No-Till Coulter Assembly Equipped with a Magnetorheological Damping System

2019

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“…Usually, there are two kinds of height control system, i.e., mechanical height control system and electro-hydraulic height control system. In early agricultural practice, the mechanical height control system is widely used in the no-till seeding [3,4] and transplanting machines [5] due to its simple structure, easy control logic and low cost. With the mechanical height control system, the seeding and transplanting efficiency can be efficiently improved [6][7][8].…”

Section: Introductionmentioning

confidence: 99%

Integrated optimization of structure and control parameters for the height control system of a vertical spindle cotton picker

Chen

et al. 2020

Preprint

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Vertical picking method is a predominate method used to harvest cotton crop. However, a vertical picking method may cause spindle bending of the cotton picker if spindles collide with stones on the cotton field. Thus, how to realize a precise height control of the cotton picker is a crucial issue to be solved. The objective of this study is to design a height control system to avoid the collision. To design it, the mathematical models are established first. Then a multi-objective optimization model represented by structure parameters and control parameters is proposed to take the pressure of chamber without piston, response time and displacement error of the height control system as the optimization objectives. An integrated optimization approach that combines optimization via simulation, particle swarm optimization and simulated annealing is proposed to solve the model. Simulation and experimental test results show that the proposed integrated optimization approach can not only reduce the pressure of chamber without piston, but also decrease the response time and displacement error of the height control system.

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Development of a Magnetorheological Damper of the Micro-vibration Using Fuzzy PID Algorithm

2018

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Modelling and simulation of the dynamic performance of a no-till seeding assembly with a semi-active damper

Cited by 10 publications

References 15 publications

Validating the Model of a No-Till Coulter Assembly Equipped with a Magnetorheological Damping System

Validating the Model of a No-Till Coulter Assembly Equipped with a Magnetorheological Damping System

Integrated optimization of structure and control parameters for the height control system of a vertical spindle cotton picker

Development of a Magnetorheological Damper of the Micro-vibration Using Fuzzy PID Algorithm

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