Abstract Starch is an important quality index in potato, which contributes greatly to the taste and nutritional of potato. At present, determination starch depends on chemical analysis, time consuming laborious. Thus, rapid accurate detection content potatoes important. This study combined hyperspectral imaging with chemometrics predict potato content. Two varieties Kexin No.1 Holland No.15 were used as experimental samples. Hyperspectral data collected from three sampling sites (the top,...

Abstract The current discrete‐element simulation models for potatoes are multisphere polymer derived from the Hertz–Mindlin (no slip) contact model in software (EDEM). These oversimplify by considering potato peel and flesh as sharing identical mechanical properties within structure. This oversimplification impedes a thorough investigation of characteristics mechanisms underlying peel‐breaking damage during mechanized harvesting, making in‐depth exploration challenging through experiments....

Abstract To obtain the collision characteristics of potatoes colliding with steel rods different parameters, finite element analysis (FEA) method was used to study impact contact stress, displacement, acceleration and force. The results showed that increasing rod diameter, maximum displacement potato in Y direction decreased, peak force increased. With tilt angle spacing, increased linearly, but decreased linearly. Within range factors, fluctuation caused by change diameters were smallest,...

To address the problems of low pickup rates and high wounds in mechanised harvesting potatoes under sectional conditions, a spring-finger potato picker was designed its overall structure working principles were described. The kinematic principle analysed based on picking constraints, parameters determined. A response surface Box–Behnken Design test design used to carry out quadratic orthogonal rotational test, with speed spring-finger, forward machine, embedded depth as factors, loss rate...

Abstract Existing potato grading device has a complex structure and large volume, which is not suitable for small‐scale farmers. However, traditional manual methods only have low efficiency but also high labor costs. This article developed small movable rotating plate (MRP)‐type device, the influences of three factors (the height horizontal slide, tilt angle inclined chain speed) on accuracy were investigated using discrete element method virtual orthogonal experiments. It was found that...

To improve the accuracy of discrete element simulation in process separating potato–soil mixtures, contact parameters sandy soil with 3, 6, 9, and 12% water content were calibrated DEM using EDEM software simulation. The error rest angle between them was used as an index, approach performing only one multiple Box–Behnken response surface analyses proposed to determine optimal parameter combinations. Meanwhile, unconfined compression direct shear tests conducted obtain polymer bonds for...

In response to the significant challenge posed by trade-off between efficiency of separating potato soil and minimizing peel damage in 4SW-170 excavator, this study focused on enhancing design swing separation sieve. The objective was develop a novel sieve comprising three distinct orders surfaces. Building upon foundation, EDEM-Adams coupled simulation method employed explore fragmentation attributes potato–soil aggregates. This investigation aimed elucidate behavior aggregates within...

Abstract To reveal the mechanism of potato mechanical damage, this article investigated relationships between collision characteristics and various impact parameters using test rig acceleration acquisition system. It was noted that system allowed simultaneously analysis three indexes: maximum acceleration, minimum damaged area. In experiments, area increased with enlarged tuber mass but decreased elevated temperature tuber. addition, smallest during colliding 65Mn‐Rubber (10 mm diameter 65Mn...

A model was developed to predict the impact damage depth of potato. The consisted a series differential equations derived from force equilibrium on element, which, respectively, governs relationships among potato collision displacement and initial speed, natural angular frequency undamped system, damping ratio. For with rod, study used test rig acceleration acquisition system measure corresponding values under different experimental conditions. Combined determinate data, mentioned parameters...

To analyse the influence factors of impact peak force (IPF) and damage depth (DD) on potatoes, orthogonal test single factor were carried out two potato varieties. The results showed that IPF Xiabodi was smaller DD greater than those Gaoyuanhong. Potato mass had greatest effect IPF, drop height DD. equations between mass, obtained. Both impacting with steel largest, smallest steel- rubber. With increase times, decreased first then increased, increased gradually.

Traditional potato grading in China relies mostly on manual sorting, which is labor-intensive, time-consuming, costly, and inefficient. To enhance the operational performance of potato-grading devices, this paper focuses optimizing slide rail structure, key component a self-developed first-generation device. A five-factor, three-level orthogonal experiment was designed, with experimental factors being height horizontal rail, angle first-stage inclined slide, second-stage chain movement...

To address the issues of significant soil blockage and high potato damage rates in current picking machines, this study developed a toggle lever-type picker designed to minimize improve operational efficiency. Design calculations were performed for components, kinematic analyses conducted lever. Single-factor experiments carried out determine variation performance parameters under different experimental conditions. Discrete element simulations measure peak height before pick-up shovel force...

Abstract The aim of this paper is to develop a precise collision model potatoes falling onto separation sieve assess their damage characteristics. A viscoelastic‐plastic mechanics created by integrating the process with potato soil device. Test factors include fall height, mass, direction, and varieties. Potato deformation volume serve as evaluation indices in single‐factor tests explore relationships these factors. analyzes loading unloading process, studying between parameters test...

To analyze the influencing factors of impact force on potatoes, a mathematical model between peak forceFm, potato mass m and drop height h was established as Fm=kmh. A single-factor test carried out, models for Fm, were presented Fm=318.36m+9.8 Fm=306.56h. Taking combination form mh factor, Fm two varieties, namely, Xiabodi Gaoyuanhong, tested under materials steel, steel-soft plastic, steel-rubber steel-leather. The relationships all Fm=k1mh four types by regression analysis results. range...

For the purpose of achieving distribution potato-soil mixture and appropriate parameters swing separating sieve, we conducted experiments using 4SW-170 potato digger. The consisted two parts. In each part, experimental factors were crank rotational speed, sieve inclination machine forward speed. difference is that first part involved a single factor test, which selected coverage as evaluation indicator. contrast, second an orthogonal obvious rate damage indexes. it was observed on reduced...

How to accurately and efficiently measure the profiles of terrain on which agricultural machines operate has been an ongoing research topic. In this study, a surface profiling apparatus (profiler) was developed along parallel tracks. The profiler is mainly composed sensor frames, RTK-GNSS system (Real Time Kinematics-Global Navigation Satellite Systems), laser sensors, Inertial Measurement Unit (IMU) data acquisition system. Along with full description how were produced, methodology...

Abstract To determine the damage characteristics of potato falling on separating screen and their relationship with vibration characteristics, it is expected to provide a reference for structural optimization harvesting related machinery. The were theoretically analyzed forced model was developed. effects parameters volume potatoes studied by single‐factor experiments fall height, mass, direction, varieties as experimental factors. Especially, changes decay coefficient α test factors...

To study the influence law of overburden rotating plate mechanism on fragmentation and separation potato soil agglomerates, a single-factor test response surface simulation analysis process were conducted in EDEM 2022 software. The results show that triangular rack blade overburdened has best effect separation. With increase lower speed, upper lift chain bar line tilt angle mechanism, agglomerates decreases. debris removal rate decreases with speed angle, percentage bond breakage between...

ABSTRACT The original two-order separating sieve has a good potato-soil ability, but it causes significant damage to potatoes while ensuring high potato detection rate, which in turn affects the working effectiveness of digger. Thus, is necessary improve design swing separation with surface one three-order solve contradiction between and damage. On this basis, movement characteristics performance new were experimentally investigated. experiment was conducted test field Wuchuan County using...

Measuring and analysing the roughness of agricultural field road have great significance for studying characteristics tractor dynamic response. This study was designed to analyse compare asphalt profiles. A profiling apparatus developed measure surface profiles parallel tracks. The profile measurements were conducted in a grass field, corn stubble harvested potato on an road. root mean square value two spectrum parameters calculated analysed investigate fields results indicate that values...

Potato is exposed to different types of impact loads during harvest, sorting, and transportation. The large force between potato rod-shaped machinery parts causes the damage brings economic losses for food industry. To obtain its influencing laws rod, both theoretical analysis finite element (FEA) were used. By defining coefficient (K), a mechanical model peak (Fmax), mass (m), drop height (h) was established. FEA virtual experiments showed that Fmax increased linearly with increase in m, h,...

The purpose of this paper is the design a potato drip irrigation tape recycling machine that would not require manual assistance or suffer from broken tapes. To clarify performance new under different working parameters, single-factor experiment was conducted. investigate reasons for variations in indexes operating RecurDyn-EDEM coupled simulation experiments were carried out, with peak height soil and maximum bending angle during process as experimental indexes. determine optimal parameter...

ABSTRACT This study aimed to explore the friction force on potatoes in process of potato-soil separation, its influencing factors and laws, establish a testing system potato-friction force. It was verified that potato mass, crank speed, sieve inclination significantly affected potato’s along surface. The interaction mass speed had greatest effect In addition, under same 200~400 g, 200 r min-1, 14.7°, surface with soil much greater than without soil, ranging between 2.32 4.85.