In-plant milk run decision problems

Alnahhal, Mohammed; Ridwan, Asep; Noche, Bernd

doi:10.1109/gol.2014.6887421

Cited by 26 publications

(12 citation statements)

References 30 publications

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“…Milk run system minimizes the total distance travelled, as a single vehicle is use instead of many (Knez and Gajsek, 2015), especially in case of repeatable flow of materials between the same locations. The specificity of the train is that it transports more goods than other intralogistics means of transport per each run (Alnahhal et al, 2014).…”

Section: Steering Systems For the Logistic Trainmentioning

confidence: 99%

Dynamic model of a logistic train with different steering systems and tire models

Paszkowiak

Bartkowiak

2021

Lat. Am. j. solids struct.

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Logistic train is one of the recent solutions applied in the intralogistics. It bases on the concept of the "milkrun" delivery method. The main problem in the implementation of intralogistics trains is the possibility to determine whether the train is able to pass the given path without a colliding with surrounding objects. Dynamic model presented in this paper was performed for the three most common steering systems for the trolleys: double Ackermann steering system and two drawbar systems: conventional and virtual clutch. The dynamic model was developed following Lagrange's theorem including the possibility of lateral slip. The system of differential equations was numerically solved. In order to calculate the lateral friction forces we used three different tire models: simplified, sigmoidal and Pacejka Magic formula. The results obtained for different tire models and steering systems are presented in the form of animations presenting train run in various conditions. The analyses have shown that the use of simplified tire models is justified under certain conditions.

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Section: Steering Systems For the Logistic Trainmentioning

confidence: 99%

Dynamic model of a logistic train with different steering systems and tire models

Paszkowiak

Bartkowiak

2021

Lat. Am. j. solids struct.

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“…Until recently, research on using the milk-run to reduce the transportation cost and the vehicle waste in manufacturing is rather sparse and mostly focused on the theoretical aspect. Alnahhal et al [2014] investigated the general framework of the decisions in in-plant milk run systems, and also the other related decisions that affect or are affected by milk run systems. Du et al [2007] investigated the parameter settings of a real-time vehicle-dispatch system for consolidating the milk-run.…”

Section: Literature Reviewmentioning

confidence: 99%

Milk-run routing problem with progress-lane in the collection of automobile parts

et al. 2019

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In recent years, the automotive industry has faced an unprecedented crisis. In particular, the zero-inventory approach, which has been widely pursued by many automobile companies, seems to be impractical in some real production contexts since it requires an inventory of all parts but in low amounts. In this paper, we investigate a new logistics method which collects automobile parts by integrating the progress-lane (P-LANE) into the corresponding vehicle routing problem. We propose a mixed integer programming formulation for this new model, which can simultaneously determines the trip routes to collect automobile parts, as well as the PLANE that each collected part should be assigned to, so as to minimize the total costs of the production and inbound logistics. The comparison with the zero-inventory model shows that the use of the PLANE within the milk-run system could significantly decrease the total costs and also improve the transportation efficiency. To be specific, for small and large size instances, the total costs of the zero-inventory model are about 10% and 30% higher than the ones with PLANE , respectively, which suggests that the periodic part collection model with PLANE could be more appropriate for automobile manufacturing.

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“…A single logistic train during a single round collects and delivers parts or products [10]. The advantage of a logistic train is that it transports more goods than other intralogistics means of transport for each run [11]. One of the main problems with the application of logistics train that that the transportation routes were usually designed for single vehicles operating and, hence, have limited dimensions, which makes it difficult for trains to pass without collision with the infrastructure [1].…”

Section: Introductionmentioning

confidence: 99%

Kinematic Model of a Logistic Train with a Double Ackermann Steering System

Paszkowiak¹,

Bartkowiak²,

Pelic³

2021

Int. j. simul. model.

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The demand for fast, economic and high load capacity intralogistics transport is a growing trend. One of the recent solution is a logistic train, which consists of a tractor and a certain number of towed trailers. It is essential that the trailer follows the track of the preceding unit as it allows reduction of shopfloor area dedicated for transport. A perfectly suited steering system for this application is the double Ackermann system. In this study, the kinematic model of the tractor with n trailers was developed based on the Jacobian matrix. The tractor model was adapted to drive along a given trajectory using a PD controller. The simulation studies confirmed that the PD controller is sufficient to control the trajectory for developed kinematic model. The obtained results showed that the trailers with the double Ackermann steering system follow a similar path, which is the most convenient for narrow turn ride. The developed kinematic model can be used for the fast path planning and the design of transportation routes in manufacturing areas. The expanded model with an advanced control system can be used to control a real logistic train.

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In-plant milk run decision problems

Cited by 26 publications

References 30 publications

Dynamic model of a logistic train with different steering systems and tire models

Dynamic model of a logistic train with different steering systems and tire models

Milk-run routing problem with progress-lane in the collection of automobile parts

Kinematic Model of a Logistic Train with a Double Ackermann Steering System

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