scholarly journals Optimization of Controlled Queueing Systems: the Case of Car Wash Services

2021 ◽  
Vol 54 ◽  
pp. 662-671
Author(s):  
Elizaveta Kondrashova
Keyword(s):  
Author(s):  
Viktor Afonin ◽  
Vladimir Valer'evich Nikulin

The article focuses on attempt to optimize two well-known Markov systems of queueing: a multichannel queueing system with finite storage, and a multichannel queueing system with limited queue time. In the Markov queuing systems, the intensity of the input stream of requests (requirements, calls, customers, demands) is subject to the Poisson law of the probability distribution of the number of applications in the stream; the intensity of service, as well as the intensity of leaving the application queue is subject to exponential distribution. In a Poisson flow, the time intervals between requirements are subject to the exponential law of a continuous random variable. In the context of Markov queueing systems, there have been obtained significant results, which are expressed in the form of analytical dependencies. These dependencies are used for setting up and numerical solution of the problem stated. The probability of failure in service is taken as a task function; it should be minimized and depends on the intensity of input flow of requests, on the intensity of service, and on the intensity of requests leaving the queue. This, in turn, allows to calculate the maximum relative throughput of a given queuing system. The mentioned algorithm was realized in MATLAB system. The results obtained in the form of descriptive algorithms can be used for testing queueing model systems during peak (unchanged) loads.


Author(s):  
Imam Abdul Rozaq ◽  
Mohammad Noor Rohman

Saat ini mobil pribadi banyak digunakan masyarakat indonesia sebagai salah satu alat transportasi. Makin pesatnya perkembangan dunia otomotif, memberikan peluang usaha bagi jasa perawatan mobil. Salah satu peluang dalam usaha bagi perawatan mobil adalah dengan cara mendirikan car wash (cucian mobil). Berdasarkan permasalahan diatas maka timbulah ide untuk membuat prototype alat cuci mobil otomatis dan membutuhkan sensor yang dapat digunakan sebagai penanda posisi mobil yaitu sensor Proximity LJC 18 A3-B-Z/Bx. Metode yang digunakan dalam penelitian ini adalah dengan Metode Research and Development (RnD) yaitu dengan cara menganalisis 2 buah sensor proximity LJC 18 A3-B-Z/Bx dengan berbagai parameter. Parameter yang digunakan dalam menganalisis sensor adalah bahan atau material yang dapat dideteksi dan jarak yang dapat dideteksi oleh sensor. Hasil dari pengujiaan sensor proximity LJC 18 A3-B-Z/Bx yang pertama dapat mendeteksi material Plat besi, Besi, Dempul, Fiber, Kaca, Kayu, Plastik, Karet, Mobil Mainan dan jarak yang dapat dideteksi oleh sensor proximity LJC 18 A3-B-Z/Bx yang  pertama adalah 2mm, sedangkan pengujian sensor proximity LJC 18 A3-B-Z/Bx yang kedua dapat mendeteksi material Plat besi, Besi, Dempul, Fiber, Kaca, Kayu, dan jarak yang dapat dideteksi oleh sensor proximity LJC 18 A3-B-Z/Bx yang  pertama adalah 1 mm sehingga yang akan digunakan dalam prototipe alat cuci mobil otomatis adalah sensor proximity LJC 18 A3-B-Z/Bx yang pertama.


2020 ◽  
Author(s):  
Yaroslav Rosokha ◽  
Chen Wei
Keyword(s):  

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