Kinematic analysis of a hopper-type dibbling mechanism for a 2.6 kW two-row pepper transplanter

Iqbal, Zafar; Islam, Nafiul; Ali, Mohammod; Kabir, Md. Shaha Nur; Park, Tusan; Kang, Tae-Gyoung; Park, Kyu-Sik; Chung, Soo Young

doi:10.1007/s12206-021-0531-2

Cited by 17 publications

(14 citation statements)

References 26 publications

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“…Each gear was designed using SolidWorks software, and the diameters required to calculate the length of the primary and connecting links were measured accordingly. Gear train combination and ratios were used to determine the lengths of the primary and connecting links of the planting mechanism using Equations ( 6) and ( 7) [22] as:…”

Section: Vector-loop Modeling Of the Rotary Planting Mechanismmentioning

confidence: 99%

“…The measured power consumption was 10.54% higher than the simulated value. The power requirement fluctuated because the planting mechanism was gear-driven, and the gear transmission efficiency varied between 94 and 99.5% [22,31]. Due to the friction losses resulting from the rotating shaft and the undesirable vibration of the test bench, the efficiency of the power transfer was less than the typical efficiency range.…”

Section: Power Requirement Of the Planting Mechanismmentioning

confidence: 99%

“…The analysis showed that the main structural parameters, such as the length of the seedling jaws and angle of the planting arms, were affecting the shape of the transplanting trajectory. Major design parameters for a gear-driven hopper-type dibbling mechanism was established using kinematic analysis [22], to accomplish the requisite seeding intervals and depths. The analytical results were used to optimize the arm lengths and gear diameters.…”

Section: Introductionmentioning

confidence: 99%

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Kinematic Analysis of a Gear-Driven Rotary Planting Mechanism for a Six-Row Self-Propelled Onion Transplanter

et al. 2021

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The purpose of this study was to develop a kinematic model of a gear-driven rotary planting mechanism for a self-propelled onion transplanter. The kinematic model was simulated using a commercial mechanical design and a simulation software package, and was validated through an on-site performance test. Torque and acceleration sensors were installed with an input power shaft and hopper jaws, respectively. Through kinematic analysis and simulation, the appropriate length combinations for primary, connecting, and planting arm were determined as 90, 70, and 190 mm, respectively. The diameters of the driver, driven, and idler gears in the primary arm were 56, 48, and 28 mm, respectively. For the secondary link, the diameters of the driver, idler, and driven gears were 28, 28, and 56 mm, respectively. The length of the planting hopper was selected as 190 mm and remained constant during the kinematic analysis. The maximum magnitude of the velocity and acceleration of the planting mechanism were determined as 1032 mm/s and 6501 mm/s2, respectively. The power consumption was measured as 35.4 W at 60 rpm. The single- and double-unit assembly of the studied rotary planting mechanism can transplant 60 and 120 seedlings/min, respectively.

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Section: Vector-loop Modeling Of the Rotary Planting Mechanismmentioning

confidence: 99%

Section: Power Requirement Of the Planting Mechanismmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Kinematic Analysis of a Gear-Driven Rotary Planting Mechanism for a Six-Row Self-Propelled Onion Transplanter

et al. 2021

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“…The torque sensor data were smoothed by using the moving average method based on 20-point symmetric [38]. The noise of the acceleration sensor data was filtered by applying fast Fourier transform and inverse fast Fourier transform methods [39]. The velocity of the gripper was derived by integrating the acceleration sensor data with time.…”

Section: Experiments With a Prototypementioning

confidence: 99%

“…For the measurement, the experiment was repeated five times, and the velocity, acceleration, and power requirement data were recorded separately for each experiment. A smartphone was also installed to record the slow-motion video (720 p HD at 240 fps) of the picking device motion for measuring the working trajectory [39,40]. The picking device trajectory was evaluated using the open-source tracking software Kinovea [40,41] and compared with the simulation result.…”

Section: Experiments With a Prototypementioning

confidence: 99%

Kinematic Analysis of a Clamp-Type Picking Device for an Automatic Pepper Transplanter

et al. 2020

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Pepper is one of the most vital agricultural products with high economic value, and pepper production needs to satisfy the growing worldwide population by introducing automatic seedling transplantation techniques. Optimal design and dimensioning of picking device components for an automatic pepper transplanter are crucial for efficient and effective seedling transplantation. Therefore, kinematic analysis, virtual model simulation, and validation testing of a prototype were conducted to propose a best-suited dimension for a clamp-type picking device. The proposed picking device mainly consisted of a manipulator with five grippers and a picking stand. To analyze the influence of design variables through kinematic analysis, 250- to 500-mm length combinations were considered to meet the trajectory requirements and suit the picking workspace. Virtual model simulation and high-speed photography tests were conducted to obtain the kinematic characteristics of the picking device. According to the kinematic analysis, a 350-mm picking stand and a 380-mm manipulator were selected within the range of the considered combinations. The maximum velocity and acceleration of the grippers were recorded as 1.1, 2.2 m/s and 1.3, 23.7 m/s2, along the x- and y-axes, respectively, for 30 to 90 rpm operating conditions. A suitable picking device dimension was identified and validated based on the suitability of the picking device working trajectory, velocity, and acceleration of the grippers, and no significant difference (p ≤ 0.05) occurred between the simulation and validation tests. This study indicated that the picking device under development would increase the pepper seedling picking accuracy and motion safety by reducing the operational time, gripper velocity, acceleration, and mechanical damage.

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Theoretical Overturning Analysis of a 2.6-kW Two-Row Walking-Type Automatic Pepper Transplanter

et al. 2022

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Kinematic analysis of a hopper-type dibbling mechanism for a 2.6 kW two-row pepper transplanter

Cited by 17 publications

References 26 publications

Kinematic Analysis of a Gear-Driven Rotary Planting Mechanism for a Six-Row Self-Propelled Onion Transplanter

Kinematic Analysis of a Gear-Driven Rotary Planting Mechanism for a Six-Row Self-Propelled Onion Transplanter

Kinematic Analysis of a Clamp-Type Picking Device for an Automatic Pepper Transplanter

Theoretical Overturning Analysis of a 2.6-kW Two-Row Walking-Type Automatic Pepper Transplanter

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