Plural Machines Research Articles

S202021 集団運転における動力伝達機構の研究 : 「ヤマヤ」醸造工場の事例([S202-2]機械技術史・工学史(2))

In former factories, plural machines were operated on one power source. We have investigated this driving system in Tokai area and considered the characteristic. In the " Yamaya" brewing factory of Takahama-shi, Aichi, we report the example that squeezed soy sauce by plural compressors.

S203014 集団運転における動力伝達機構の研究 : 製茶工場・向笠園の事例

The former production factory operated plural machines in one power source. This study investigates a factory this driving method in Tokai area and considers a characteristic We report about a Mukasa Green tea-Factory in Makinohara-city, Sizuoka.

S202022 集団運転における動力伝達機構の研究 : 芳賀織布工場の事例([S20202]機械技術史・工学史(2))

Machihata-cho 1-1, Toyohashi-city, Aichi, 441-8522 Japan In former factories, plural machines were operated on one power source. We have investigated this driving system in Tokai area and considered the characteristic. In this report, we treat Haga cotton textile factory in Toyohashi city, Aichi. This factory has adopted this system since it was founded in 1947. In Toyohashi city, it is only textile factory which adopts this system.

S2001-1-2 集団運転における動力伝達機構の研究 : 渡辺織布における事例から(機械技術史・工学史(1),社会変革を技術で廻す機械工学)

The former production factory operated plural machines in one power source. This study investigates a factory leaving this driving method in Tokai area and considers a characteristic. We report it about a Watanabe cotton textiles factory in Gamagoori-shi, Aichi.

Performance of Extended Local Clustering Organization (LCO) for Large Scale Job-Shop Scheduling Problem (JSP)

This paper describes an approach to development of a solution algorithm of a general-purpose for large scale problems using “Local Clustering Organization (LCO)” as a new solution for Job-shop scheduling problem (JSP). Using a performance effective large scale scheduling in the study of usual LCO, a solving JSP keep stability induced better solution is examined. In this study for an improvement of a performance of a solution for JSP, processes to a optimization by LCO is examined, and a scheduling solution-structure is extended to a new solution-structure based on machine-division. A solving method introduced into effective local clustering for the solution-structure is proposed as an extended LCO. An extended LCO has an algorithm which improves scheduling evaluation efficiently by clustering of parallel search which extends over plural machines. A result verified by an application of extended LCO on various scale of problems proved to conduce to minimizing make-span and improving on the stable performance.

Decentralized Job Shop Scheduling by Recursive Propagation Method (4th Report, Proposal of Message Exchanging Procedure for Cases Considering Cooperative Operations Among Machines)

Mutual dependence among machines in a decentralized manufacturing system is analyzed systematically in order to expand the applicability of recursive propagation method for scheduling, which is an information exchange procedure proposed by the author for management of machines. The dependence among machines is characterized by both the processes planning to manufacture a product and the operations associated with each process. In this paper, the types of the process and the operation are described in detail, and an improved recursive propagation method, which can cope with cooperative operations among plural machines, is proposed to make feasible schedules in complex manufacturing systems.

複数台同時使用時における溶接電源の相互干渉対策 原子炉格納容器用自動パルスミグ溶接装置の改善

Welding power supplies for pulsed GMAW have been developed, which have two circuits such as a single-phase SCR (Silicon Controled Rectifier) bridge circuit for pulse current and a three phase SCR bridge circuit for base current. In this power supply, however, the characteristic of the SCR control system is affected with the wave form deformation of power source voltage. caused by electric unbalanced load when plural machines are operated at the same time.In this case, unstable arc phenomena occurs and the weldability becomes poor.As the countermeasure for the above phenomena, upper limit of primary circuit's. impedance, which is a cause of the wave form deformation power source voltage, and the relation between the impedance and unstable arc phenomena were confirmed by the theoretical calculation and experiments, and further more, pulse arc voltage feedback control system was devised so that stable welding is possible, regardless of the impedance value.