R. Stetter | Hochschule Ravensburg-Weingarten (original) (raw)
Papers by R. Stetter
ABSTRACT The presented work is concerned with the development of innovative strategies and tools ... more ABSTRACT The presented work is concerned with the development of innovative strategies and tools for the management of collaborations between original equipment manufacturers (OEM) and suppliers in product development departments in automotive industry. The term "supplier" refers to system suppliers who deliver complex systems directly to the OEM as well as to component suppliers who deliver indirectly to the OEM. Due to rising product complexity, the need for collaboration in the product development of car components is still increasing. For instance, in the design of an automotive seating system for a certain model more than a hundred industrial designers, design engineers, project managers, accountants, and prototype experts need to collaborate effectively and efficiently in order to achieve the technical and economic objectives. Extensive work has already covered this area (Eckert et al. 2001, Kristjansson et al. 2003, Krystek et al. 1997, Link et al. 2001, Shaughnessy 1994, Wunram et al. 2003), especially in the field of collaboration in industrial production (supply/value chain management). However, in daily practice many problems on a technical, personal, and organisational level still hinder efficient collaboration. This paper presents a collection of strategies and tools which were found to support the collaboration management. Firstly, the results of an in-depth analysis of the product development are presented in section 1. Secondly, the strategies and tools that were collected and generated on basis of the analysis are described in section 2.
Proceedings of the Design Society: DESIGN Conference
This paper reports the application of the methods and tools of fault-tolerant design to an automa... more This paper reports the application of the methods and tools of fault-tolerant design to an automated shifting system and their reflection and extension. Fault-tolerant design has emerged in the last years and is generally understood as a collection of strategies, methods, algorithms, tools and insights which are intended to support the development of technical systems which are fault-tolerant because of their controllability but also their inherent fault-tolerant design qualities. The field of application is a shifting system for the gear system of a formula student driverless race car.
Journal of Physics: Conference Series
Condition-monitoring plays an increasingly important role for technical processes in order to imp... more Condition-monitoring plays an increasingly important role for technical processes in order to improve reliability, availability, maintenance and lifetime of equipment. With increasing demands for efficiency and product quality, plus progress in the integration of automatic control systems in high-cost mechatronic and critical safety processes, the field of health monitoring is gaining interest. A similar research field is concerned with an estimation of the remaining useful life. A central question in these fields is the modelling of degradation; degradation is a process of a gradual and irreversible accumulation of damage which will finally result in a failure of the system. This paper is based on a current research project and explores various degradation modelling techniques. These results are explained on the basis of an industrial product-a system for the generation of health status information for pump systems. The result of this fuzzy-logic based system is a single number indicating the current health of a pump system.
Journal of Physics: Conference Series
In the scientific field of systematic product development a wide range of helpful methods, guidel... more In the scientific field of systematic product development a wide range of helpful methods, guidelines and tools were generated and published in recent years. Until now little special attention was given to design guidelines aiming at supporting product development engineers to design products that allow and support control or diagnosis functions. The general trend to ubiquitous computing and the first development steps towards cognitive systems as well as a general trend toward higher product safety, reliability and reduced total cost of ownership (TCO) in many engineering fields lead to a higher importance of control and diagnosis. In this paper a first attempt is made to formulate general valid guidelines how products can be developed in order to allow and to achieve effective and efficient control and diagnosis. The guidelines are elucidated on the example of an automated guided vehicle. One main concern of this paper is the integration of control and diagnosis functionalities into the development of complete systems which include mechanical, electrical and electronic subsystems. For the development of such systems the strategies, methods and tools of systematic product development have attracted significant attention during the last decades. Today, the functionality and safety of most products is to a large degree dependent on control and diagnosis functionalities. Still, there is comparatively little research concentrating on the integration of the development of these functionalities into the overall product development processes. The paper starts with a background describing Systematic Product Development. The second section deals with the product development of the sample product. The third part clarifies the notions monitoring, control and diagnosis. The following parts summarize some insights and formulate first hypotheses concerning control and diagnosis in Systematic Product Development.
Journal of Physics: Conference Series
This paper is concerned with the integration of control and diagnosis functionalities into the de... more This paper is concerned with the integration of control and diagnosis functionalities into the development of complete systems which include mechanical, electrical and electronic subsystems. For the development of such systems the strategies, methods and tools of integrated product development have attracted significant attention during the last decades. Today, it is generally observed that product development processes of complex systems can only be successful if the activities in the different domains are well connected and synchronised and if an ongoing communication is present-an ongoing communication spanning the technical domains and also including functions such as production planning, marketing/distribution, quality assurance, service and project planning. Obviously, numerous approaches to tackle this challenge are present in scientific literature and in industrial practice, as well. Today, the functionality and safety of most products is to a large degree dependent on control and diagnosis functionalities. Still, there is comparatively little research concentrating on the integration of the development of these functionalities into the overall product development processes. The main source of insight of the presented research is the product development process of an Automated Guided Vehicle (AGV) which is intended to be used on rough terrain. The paper starts with a background describing Integrated Product Development. The second section deals with the product development of the sample product. The third part summarizes some insights and formulates first hypotheses concerning control and diagnosis in Integrated Product Development.
Journal of Physics: Conference Series
Energy is an important factor in today's industrial environment. Pump systems account for about 2... more Energy is an important factor in today's industrial environment. Pump systems account for about 20% of the total industrial electrical energy consumption. Several studies show that with proper monitoring, control and maintenance, the efficiency of pump systems can be increased. Controlling pump systems with intelligent systems can help to reduce a pump's energy consumption by up to one third of its original consumption. The research in this paper was carried out in the scope of a research project which involves modelling and simulation of pump systems. This paper focuses on the future implementation of modelling capabilities in PLCs (programmable logic controllers). The whole project aims to use a pump itself as the sensor rather than introducing external sensors into the system, which would increase the cost considerably. One promising approach for an economic and robust industrial implementation of this intelligence is the use of PLCs. PLCs can be simulated in multiple ways; in this project, Codesys was chosen for several reasons which are explained in this paper. The first part of this paper explains the modelling of a pump itself, the process load of the asynchronous motor with a control system, and the simulation possibilities of the motor in Codesys. The second part describes the simulation and testing of a system realized. The third part elaborates the Codesys system structure and interfacing of the system with external files. The final part consists of comparing the result with an earlier Matlab/SIMULINK model and original test data.
ABSTRACT München, Techn. University, Diss., 2000.
Advances in Intelligent Systems and Computing, 2014
2010 Emobility - Electrical Power Train, 2010
In the focus of this paper is a revolutionary steering system for vehicles of all kinds. It was d... more In the focus of this paper is a revolutionary steering system for vehicles of all kinds. It was developed primarily for unmanned vehicles in service and logistics applications, but can also be used in manned vehicles in the scope of eMobility and disposes of the potential to improve maneuverability, efficiency and dynamic behavior of such vehicles. The patented steering principle
4th IFAC Symposium on Mechatronic Systems (2006), 2006
ABSTRACT This paper describes the design of a mobile robot for outdoor surveillance and explorati... more ABSTRACT This paper describes the design of a mobile robot for outdoor surveillance and exploration tasks following the design methodology for mechatronic systems. Therefore, the main design and integration steps based on the so called V model as a macro cycle are first explained. In order to give an example of the domain-specific design during that overall design cycle, the development of the path tracking control is described in more detail. Here we applied a state-dependent Riccati equation controller to solve the nonlinear control problem.
8th IFAC Symposium on Fault Detection, Supervision and Safety of Technical Processes, 2012
Design process improvement, 2005
Solid State Phenomena, 2009
Abstract In the following paper we consider a problem of fault detection for a mobile robot. The ... more Abstract In the following paper we consider a problem of fault detection for a mobile robot. The robot which our work is related to, is based on a new type of the steering principle [1]. The crucial part of the steering system are axle position sensors. A failure of one of them ...
ABSTRACT The presented work is concerned with the development of innovative strategies and tools ... more ABSTRACT The presented work is concerned with the development of innovative strategies and tools for the management of collaborations between original equipment manufacturers (OEM) and suppliers in product development departments in automotive industry. The term "supplier" refers to system suppliers who deliver complex systems directly to the OEM as well as to component suppliers who deliver indirectly to the OEM. Due to rising product complexity, the need for collaboration in the product development of car components is still increasing. For instance, in the design of an automotive seating system for a certain model more than a hundred industrial designers, design engineers, project managers, accountants, and prototype experts need to collaborate effectively and efficiently in order to achieve the technical and economic objectives. Extensive work has already covered this area (Eckert et al. 2001, Kristjansson et al. 2003, Krystek et al. 1997, Link et al. 2001, Shaughnessy 1994, Wunram et al. 2003), especially in the field of collaboration in industrial production (supply/value chain management). However, in daily practice many problems on a technical, personal, and organisational level still hinder efficient collaboration. This paper presents a collection of strategies and tools which were found to support the collaboration management. Firstly, the results of an in-depth analysis of the product development are presented in section 1. Secondly, the strategies and tools that were collected and generated on basis of the analysis are described in section 2.
Proceedings of the Design Society: DESIGN Conference
This paper reports the application of the methods and tools of fault-tolerant design to an automa... more This paper reports the application of the methods and tools of fault-tolerant design to an automated shifting system and their reflection and extension. Fault-tolerant design has emerged in the last years and is generally understood as a collection of strategies, methods, algorithms, tools and insights which are intended to support the development of technical systems which are fault-tolerant because of their controllability but also their inherent fault-tolerant design qualities. The field of application is a shifting system for the gear system of a formula student driverless race car.
Journal of Physics: Conference Series
Condition-monitoring plays an increasingly important role for technical processes in order to imp... more Condition-monitoring plays an increasingly important role for technical processes in order to improve reliability, availability, maintenance and lifetime of equipment. With increasing demands for efficiency and product quality, plus progress in the integration of automatic control systems in high-cost mechatronic and critical safety processes, the field of health monitoring is gaining interest. A similar research field is concerned with an estimation of the remaining useful life. A central question in these fields is the modelling of degradation; degradation is a process of a gradual and irreversible accumulation of damage which will finally result in a failure of the system. This paper is based on a current research project and explores various degradation modelling techniques. These results are explained on the basis of an industrial product-a system for the generation of health status information for pump systems. The result of this fuzzy-logic based system is a single number indicating the current health of a pump system.
Journal of Physics: Conference Series
In the scientific field of systematic product development a wide range of helpful methods, guidel... more In the scientific field of systematic product development a wide range of helpful methods, guidelines and tools were generated and published in recent years. Until now little special attention was given to design guidelines aiming at supporting product development engineers to design products that allow and support control or diagnosis functions. The general trend to ubiquitous computing and the first development steps towards cognitive systems as well as a general trend toward higher product safety, reliability and reduced total cost of ownership (TCO) in many engineering fields lead to a higher importance of control and diagnosis. In this paper a first attempt is made to formulate general valid guidelines how products can be developed in order to allow and to achieve effective and efficient control and diagnosis. The guidelines are elucidated on the example of an automated guided vehicle. One main concern of this paper is the integration of control and diagnosis functionalities into the development of complete systems which include mechanical, electrical and electronic subsystems. For the development of such systems the strategies, methods and tools of systematic product development have attracted significant attention during the last decades. Today, the functionality and safety of most products is to a large degree dependent on control and diagnosis functionalities. Still, there is comparatively little research concentrating on the integration of the development of these functionalities into the overall product development processes. The paper starts with a background describing Systematic Product Development. The second section deals with the product development of the sample product. The third part clarifies the notions monitoring, control and diagnosis. The following parts summarize some insights and formulate first hypotheses concerning control and diagnosis in Systematic Product Development.
Journal of Physics: Conference Series
This paper is concerned with the integration of control and diagnosis functionalities into the de... more This paper is concerned with the integration of control and diagnosis functionalities into the development of complete systems which include mechanical, electrical and electronic subsystems. For the development of such systems the strategies, methods and tools of integrated product development have attracted significant attention during the last decades. Today, it is generally observed that product development processes of complex systems can only be successful if the activities in the different domains are well connected and synchronised and if an ongoing communication is present-an ongoing communication spanning the technical domains and also including functions such as production planning, marketing/distribution, quality assurance, service and project planning. Obviously, numerous approaches to tackle this challenge are present in scientific literature and in industrial practice, as well. Today, the functionality and safety of most products is to a large degree dependent on control and diagnosis functionalities. Still, there is comparatively little research concentrating on the integration of the development of these functionalities into the overall product development processes. The main source of insight of the presented research is the product development process of an Automated Guided Vehicle (AGV) which is intended to be used on rough terrain. The paper starts with a background describing Integrated Product Development. The second section deals with the product development of the sample product. The third part summarizes some insights and formulates first hypotheses concerning control and diagnosis in Integrated Product Development.
Journal of Physics: Conference Series
Energy is an important factor in today's industrial environment. Pump systems account for about 2... more Energy is an important factor in today's industrial environment. Pump systems account for about 20% of the total industrial electrical energy consumption. Several studies show that with proper monitoring, control and maintenance, the efficiency of pump systems can be increased. Controlling pump systems with intelligent systems can help to reduce a pump's energy consumption by up to one third of its original consumption. The research in this paper was carried out in the scope of a research project which involves modelling and simulation of pump systems. This paper focuses on the future implementation of modelling capabilities in PLCs (programmable logic controllers). The whole project aims to use a pump itself as the sensor rather than introducing external sensors into the system, which would increase the cost considerably. One promising approach for an economic and robust industrial implementation of this intelligence is the use of PLCs. PLCs can be simulated in multiple ways; in this project, Codesys was chosen for several reasons which are explained in this paper. The first part of this paper explains the modelling of a pump itself, the process load of the asynchronous motor with a control system, and the simulation possibilities of the motor in Codesys. The second part describes the simulation and testing of a system realized. The third part elaborates the Codesys system structure and interfacing of the system with external files. The final part consists of comparing the result with an earlier Matlab/SIMULINK model and original test data.
ABSTRACT München, Techn. University, Diss., 2000.
Advances in Intelligent Systems and Computing, 2014
2010 Emobility - Electrical Power Train, 2010
In the focus of this paper is a revolutionary steering system for vehicles of all kinds. It was d... more In the focus of this paper is a revolutionary steering system for vehicles of all kinds. It was developed primarily for unmanned vehicles in service and logistics applications, but can also be used in manned vehicles in the scope of eMobility and disposes of the potential to improve maneuverability, efficiency and dynamic behavior of such vehicles. The patented steering principle
4th IFAC Symposium on Mechatronic Systems (2006), 2006
ABSTRACT This paper describes the design of a mobile robot for outdoor surveillance and explorati... more ABSTRACT This paper describes the design of a mobile robot for outdoor surveillance and exploration tasks following the design methodology for mechatronic systems. Therefore, the main design and integration steps based on the so called V model as a macro cycle are first explained. In order to give an example of the domain-specific design during that overall design cycle, the development of the path tracking control is described in more detail. Here we applied a state-dependent Riccati equation controller to solve the nonlinear control problem.
8th IFAC Symposium on Fault Detection, Supervision and Safety of Technical Processes, 2012
Design process improvement, 2005
Solid State Phenomena, 2009
Abstract In the following paper we consider a problem of fault detection for a mobile robot. The ... more Abstract In the following paper we consider a problem of fault detection for a mobile robot. The robot which our work is related to, is based on a new type of the steering principle [1]. The crucial part of the steering system are axle position sensors. A failure of one of them ...