Papers by Keyword: Planning

Abstract: Manufacturing companies have to adapt existing factories due to changing customer demands and new technologies. The coordination of several engineering changes in manufacturing systems is a key factor for the efficiency of their implementation. In this paper, a concept for planning and controlling of multiple engineering changes is presented. The concept includes the preselection, planning and execution of engineering changes. The engineering changes can be classified with regard to their relevance and urgency. The needed work steps for the implementation are deduced from the software-based planning and the time schedule for the work steps is created. The work steps are monitored while executing and events are initiated, if necessary. The concept is implemented in a software demonstrator and validated through this software.

Abstract: The integration of lightweight robots and service robots into industrial work places forms the new area of industrial service robots characterized by the transformation of manual processes to human robot interactive processes. Still, it is highly difficult to decide which manual processes are qualified for automation or collaboration. Consequently, only few collaborative processes can be found in industry. The objective of the project MANUSERV is to support decisions towards this transfer by developing a tool that supports users to identify practical technical solutions. The tool is a combination of a planning system and a simulation system. The aim of the planning system is to select technically feasible solutions and generate task sequences that solve the problem. The simulation system verifies the proposed solution and evaluates it technically, economically, and ergonomically. Manufacturers of service robots can provide their service robot specifications to be included into the system selection process.

Abstract: To respond to challenges created by an increase of product variants, multi-variant lines are used as today’s assembly systems. In these multi-variant lines different product variants with diverse lot sizes can be efficiently assembled. These assembly systems are characterized by modular structures that allow assembly system adaptation by reconfiguration.The variety of parameters to be considered from the product’s perspective and the correct allocation of different assembly modules increases the complexity when planning these systems. This complexity makes it difficult to successfully plan and implement production processes. Therefore, digital planning tools and models have to be used to schedule new product variants and to verify that the assembly is possible, given by the modules in the assembly line.Due to its ability to reconfigure, the actual assembly system is adaptable to different product variants. But these modifications are performed by the operator on the shop floor and are often neither properly documented nor communicated to the assembly planer. Thus, the configuration status in reality and the virtual model differ from each other. Using the outdated model for planning without taking into account the changes can result in an unrealizable assembly plan.To overcome this problem, the presented paper introduces a method and technical system to identify the actual assembly system configuration before the assembly planning is done. Due to the subsequent update of the virtual model depending on the actual configuration, the assembly planner is supported with the latest version of the assembly system configuration. Furthermore, the assembly planning process is improved, because possible failures are detected in advance in the virtual planning environment.

Abstract: The article presents selected issues related to the analysis of GSM-R network and issues of planning and dimensioning of this network in terms of providing opportunities for data and voice transmission. The synthetic description of the system structure, a set of available services and the means of data transmission were presented. Then, certain conditions that should be taken into account in the connection budget were specified. Requirements for network dimensioning for determining the operating capacity of the network were specified. The volume of the telecom traffic generated within the base station transceiver affects not only the number of resources necessary to handle the traffic, but also implies the number of frequency channels necessary to be allocated.

Abstract: This paper aims to analyze processes of an automotive industrial company in order to identify and implement management methods to modify the volume of produced product starting with the changing request through to the handover of the first produced and approved new product status to volume production. The specialist scope extends to each volume of produced product or part thereof, irrespective of whether this was produced in-house or externally sourced. The effects of a product modification on the production process, purchased parts and production resources are included in full. A modification can be implemented with or without a modification project. If a modification is implemented within the scope of a modification project, the regulations governing product development process projects apply. The application process of modifications comprises the modification request, define modification scope, analysis of consequences and approval of modification request. The decision and responsibility to implement the modification process in volume of produced products lies to the product line manager. Every modification type constitutes a product change and can be mapped in various ways in a system.

Abstract: To relieve the traffic congestion in urban areas, one approach is to modify the current planning scheme based on the balance between traffic supply and demand. Based on the proposed GIS platform, this paper analyzes the interactive relationship between land use and traffic system. Feasibility judgment of planning scheme is implemented based on land attribute, represented by urban floor area ratio and road area ratio. TransCAD based simulation is used to evaluate the planning scheme by traffic flow and the saturation of each link. Comparisons between traffic generation and traffic network capacity, based on a two-dimensional model of Space and Time Consuming Method, is presented to verify the coordination between urban traffic and land use. A real-world case study is implemented to test the efficiency and applicability of the proposed model and computing methods.

Abstract: The paper deals with the structure of the planning process of complex magnesite processing, where capacity planning and scheduling of production constitutes an important and essential component of the management process of the production of products throughout their life cycle.

Abstract: The purpose of this paper is to investigate in Asset Management and the metaphor “hidden factory” and evaluate to what extent this is of importance for Integrated Planning (IPL). Integrated Planning is facing the challenges in the industry with “silo thinking”, which hinders the organisation to optimise the cooperation between the different functions in the production system, e.g. the cooperation between production planning and maintenance planning. The result shows that there are indeed elements both in Asset Management and from the hidden factory concept that supports the IPL concept. In particular it has been proposed specific KPIs and a dashboard for the planners in IPL.

Abstract: The concept of Units and Grid Coordination (UGC) is introduced. Problems about UGC are drawn from some power interruptions. Some attentive issues are present in excitation selection and design in future power system such as reliable operation of PSS, coordination between excitation limiters and protections, operation mode of excitation control in running stage. Special attention should be paid to the selection of excitation type, parameters design of 1000MW class generator unit in planning stage.

Abstract: Environmental monitoring of national highway is an important content of China’s environmental monitoring network in the transport field, a part of national environmental monitoring system, and also a significant basis for environmental protection supervision and management of the transport industry. Using the methods of spatial analysis, grid analysis, and optimization through ArcGIS, monitoring objects of Chinese national highway environmental monitoring network had been screened out. Among which, the environmental quality monitoring objects are composed of the national highway sensitive sections nearby or passing through 277 natural reserves, 32 national scenic areas, 7 of the world’s natural and cultural heritage sites, 8 important wetlands, 398 important reservoirs, and 193 state-level sensitive aquatic germ plasm resources conservation areas; and the pollutant emission monitoring objects include 316 long and extra-long tunnels, 539 service areas and 601 toll stations with large traffic volume. Environmental quality monitoring objects and pollutant emission monitoring objects form China’s National Highway Environmental Monitoring Network, which has filled the blank of highway environmental monitoring in the national environmental monitoring network. It will play a positive role in promoting the green development of China's transport industry.