The 1990s: Double Restart

German reunification and a change in the institute's management shape the 1990s – Fraunhofer IPK reinvents itself twice.

1990: Years of upheaval in the wake of reunification

© Fraunhofer IPK
The Fraunhofer IPK branch office on Kurstrasse in Berlin-Mitte
© Fraunhofer IPK
A resounding success five years after its founding: In 1994, on the anniversary of the CIM Technology Transfer Center, the Federal Minister of Research and Technology Dr. Paul Krüger visited the PTZ.

Contribution to the development of eastern Germany

The history of Fraunhofer IPK in the 1990s cannot be told without considering the general upheaval that followed the fall of the Berlin Wall and German reunification. These events set in motion processes that would have a significant impact on the work at the institute. On the one hand, the institute was heavily involved in the development of western structures and economics in East Germany after 1990. On the other hand, the general recession in West Germany and the discontinuation of Berlin subsidy led to a structural shift in the institute’s client base, which would have a direct impact on its research.

There was much work to be done in developing both industry and research after reunification, and Fraunhofer IPK was active in both areas. From 1992 to 1996, the institute maintained a branch office in Berlin Mitte, where scientists and engineers from the former Academy of Sciences of the GDR were able to gain experience in project acquisition and in collaborating with industry partners. Parts of the branch office staff were transferred to Fraunhofer IPK after 1996.

At the same time, various initiatives supported East German manufacturing companies in their transition to a market economy. As early as 1990, four new locations in East Germany were added to the CIM Technology Transfer Centers. The CIM-TT Center Berlin, which had been based at the PTZ since 1988, took on the coordination and supported the establishment of the locations in Chemnitz, Dresden, Magdeburg, and Wismar. It also initiated the establishment of an »Investment Market Berlin-Brandenburg« under the patronage of Federal Minister of Economics Jürgen W. Möllemann. The Investment Market was intended to provide investors with information about the Berlin-Brandenburg districts, companies slated for privatization, and the PTZ’s technology-oriented management expertise. At the same time, a Center for Workshop-Oriented Programming Methods, known within Fraunhofer IPK as the »WOP Center«, worked to simplify the programming of shop-floor equipment using graphical-interactive input methods. After 1990, the center’s services were primarily utilized by interested parties from the new federal states.

Economic structural change is arriving at Fraunhofer IPK

Despite all efforts to boost the East German economy, contract research at the institute initially suffered a sharp decline. The reasons are complex. The West Berlin economy had been subsidized for years, primarily to keep the manufacturing sector in the city despite unfavorable location conditions and a lack of access to the surrounding area. This so-called Berlin subsidy was rapidly phased out after 1990, making the location unattractive for many companies. A large number migrated to West Germany, and previously close ties with Fraunhofer IPK often came to a standstill. At the same time, investment in research and development declined amid the general recession following German reunification.

The effects can be observed at the institute as if through a magnifying glass: Between 1992 and 1995, the number of employees at Fraunhofer IPK dropped sharply, while the budget simultaneously shrank drastically. A look at the client industries shows that the institute shifted its focus to stabilize its operations: While client companies before 1990 came primarily from the fields of electrical and communications engineering as well as mechanical engineering, the automotive industry, for example, now gained influence. Sectors that had previously generated only a small volume of contracts were now officially included in the statistics – such as optics or aerospace. From the mid-1990s onward, the institute’s financial situation stabilized on this basis, and the shift in sectoral focus sparked an exciting expansion of research topics throughout the decade.

1992: Machine vision or vision of the future?

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Dr. Bertram Nickolay, 1993
© Fraunhofer IPK
As early as 1988, Fraunhofer IPK was working on image analysis for quality assurance purposes.
© Fraunhofer IPK
Camera setup for surface analysis, 1996

Surface-level excellence

As early as the 1970s, researchers at IWF of TU Berlin had been experimenting with object recognition using sensors such as cameras, even before computers were capable of storing and analyzing the collected data. The reason for a research institute with a focus on production science to address this topic is clear: With increasing automation, for example in the automotive industry, industrial robots and other systems had to independently locate, identify, and move parts. Image analysis was also initially viewed as a subfield of sensor technology in projects at Fraunhofer IPK and used for simple handling processes. Examples included measuring the height and determining the position of stacked workpieces using two cameras mounted on an industrial robot, or the so-called »reach into the box« scenario, where objects are, in extreme cases, randomly piled on top of each other and overlap in camera images.

With better cameras and more powerful computers, the range of applications for this technology expanded rapidly in the late 1980s and early 1990s. Under the leadership of Dr. Bertram Nickolay, Fraunhofer IPK established a department for pattern recognition that focused on automated image analysis, including for application in quality assurance. In 1992, Dr. Nickolay was awarded the Joseph von Fraunhofer Prize for his doctorate on a »trainable image analysis system to evaluate material surfaces and detect surface defects« that was trained using supervised machine learning – the second such prize for Fraunhofer IPK.

Lights, camera, action!

It did not take long for practical applications of these advanced methods to emerge: From inspecting sewer systems with robots to quality-checking parts from casting processes and supporting diagnostics at the Deutsches Herzzentrum, Dr. Nickolay’s team was in high demand. And they actively sought out contacts beyond production. For the researchers, there was no doubt that their industrial image processing systems had the potential to be transferred from production to other fields. After all, they were capable of recognizing and analyzing virtually any pattern.

© Fraunhofer IPK
By 1994, license plate recognition at entrance gates was already functioning very reliably: The software developed in a project for parking garages could evaluate license plates within one to two seconds.
© Fraunhofer IPK
Authentic or fake? To verify the authenticity of signatures on passports, checks and contract documents, banks and government agencies relied on image analysis systems from Fraunhofer IPK.

Pattern recognition, in the form of optical character recognition (OCR), thus increasingly found its way into everyday applications. It took just one to two seconds for a Fraunhofer IPK system to automatically recognize car license plates in parking garages. Projects on forgery protection, signature verification, and fingerprint identification were also highly successful: As a strategic partner to banks and government agencies such as the Bundeskriminalamt, the institute was involved in important developments in security technology for many years. The fact that Dr. Nickolay and his department had established a new focus for the institute’s research would continue to have an impact well into the 2010s – with projects such as the reconstruction of cultural artifacts that found users worldwide.

1992 Simulation at all levels of production

Anticipating the real-world process virtually

Modeling and simulation are indispensable tools in today’s manufacturing. From validating machining operations and setting up process chains to mapping complex organizational structures, they support processes at every level of the industrial hierarchy. The properties and behavior of systems are thus captured and optimized without the need for time-consuming real-world testing, and complex relationships are visualized in a comprehensible manner.

Against this backdrop, it is hardly surprising that, in an institute with a strong digital focus, the broad field of »simulation« became a defining area of activity at an early stage. Since the 1980s, the institute’s annual reports have included descriptions of research on simulation topics across all its departments. One example among the multitude of activities related to the simulation of manufacturing processes: In the early 1990s, the institute was able to virtually model the entire process of automated car body painting and implement corresponding solutions in the automotive industry. The technologies developed became part of the »RobCAD Painting Module« distributed by the Israeli company Tecnomatix, and from there were later incorporated into Product Lifecycle Management software made by Siemens. 

© Fraunhofer IPK / Bernd Bresien
Control simulator, 1986: This device allowed control software developed for Traub to be tested as if it were running on the actual machine.
© Fraunhofer IPK
Dr. Xiaoyi Liu’s doctoral thesis on the simulation of pneumatic and electrostatic painting processes was awarded AEG’s Carl Ramsauer Prize in 1992.
© Fraunhofer IPK
The LAROS coating simulation helped determine the appropriate process strategy for optimal paint distribution.

Various areas of expertise at the institute played a role in this field, such as construction technology and robotics. A contribution from the latter area was awarded a prize: Dr. Xiaoyi Liu was awarded AEG’s Carl Ramsauer Prize in 1992 for his dissertation on pneumatic and electrostatic painting processes. The reason for the award: Simulation integrates domain knowledge from various fields, bringing together physical, chemical, or mechanical aspects with information technology tools. Dr. Xiaoyi Liu succeeded groundbreakingly in harmonizing the fields of fluid mechanics, electric field theory, computer science, and practical industrial application. His method was applied industrially during the offline programming phase of painting robots to achieve a more uniform paint layer, increase painting efficiency, and prevent painting defects.

© Fraunhofer IPK
The MOSYS simulation system was developed in the 1980s for planning a state-of-the-art flexible NC production hall at MBB in Donauwörth.
© Fraunhofer IPK
MO²GO models transfer the structures, services, processes and data of a company into an integrated enterprise model and provide the data available in a targeted manner. With few notation elements, MO²GO makes the model representation easy to understand.
© Fraunhofer IPK
Training at the Demonstration Center for Simulation in Production and Logistics, 1995. A company model in MO²GO can be seen on the screen on the wall.

Modeling and simulation of factory processes

 

Operating at a higher level was the »Demonstration Center for Simulation in Production and Logistics«, which was officially inaugurated in September 1994. In the 1980s, Fraunhofer IPK had developed the MOSYS simulation system for planning complex manufacturing systems on the scale of entire factory halls. As part of CIM, the idea emerged to model not only the flow of materials within the factory layout but also the surrounding processes and their interdependencies – from order receipt through material logistics and manufacturing to the finished part, including the corresponding subdivisions and functional groups within a company. Systems commercially available at the time were not capable of this, because they were unable to map the necessary process integration. When, in 1986, processes within the company were to be modeled as part of a comprehensive study on the state of CIM technology for the automotive manufacturer VW, the foundations for Integrated Enterprise Modeling (IUM) and the MO²GO modeling tool were laid. In the years that followed, Fraunhofer IPK used this base to support numerous companies in mapping their business processes and optimizing them in a targeted manner.

 

Starting in 1994, the Demonstration Center set itself the task of making simulation solutions and technologies accessible to a broader user base. To this end, it not only offered training on various common simulation systems but also conducted simulation games in which companies were enabled, through the use of simulation techniques, to identify and remedy weaknesses in their processes. The interactive simulation game LIFE!, in which participants had to organize drill production according to different process logics, formed the basis for the serious games that are still being adapted at Fraunhofer IPK to ever-changing macroeconomic conditions – most recently to the requirements of the circular economy, for the implementation of digital product passports or for the development and training of resilient business processes.

To be continued...

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