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Intelligent Drive for Shop-Floor Systems

Ziel

The objective of IDRIS is to enhance the capabilities, performance and cost-effectiveness of multi-axis machinery by the application of distributed systems techniques at the level of intelligent drives, motor systems and smart power conversion.

The project aims to make the following improvements in the domain of feed and servo drives:

- Accuracy and resolution: the ability of the control system to achieve smooth, accurate motion in multiple axes, in spite of major detrimental effects such as friction and load disturbances, is an important aim. IDRIS will develop drives which can better cope with such problems over a wider range of operating conditions.
- Increased speed range: IDRIS is aiming towards an order of magnitude improvement at the lower end.
- Flexibility: the trend in machine-tool design is towards multi-purpose machines, requiring axes to be driven in different ways at different times. IDRIS drives will be able to handle a wider range of operating conditions.
- Reliability and fault handling: the amounts of power being handled by machine tool drives makes it important that the control system is able to detect and diagnose faults rapidly. IDRIS aims to extend the distribution and level of diagnostics information.
- Improved power usage, involving the more efficient and cleaner use of the electrical power supplied: IDRIS will develop a regenerative power supply which will draw from and put power back to the mains as necessary while maintaining a near-unity power factor. This will also result in cooler, quieter operation of the drives.

A main theme within IDRIS is the extension of real-time digital control technology from the CNC level through to the current control level, using digital communications to link the various levels. In doing so, the control structure becomes much more open, accessible and flexible, leading to the opportunity to improve drive performance through more intelligent control, with control and decision processes distributed across levels for the best effect. This work involves the development of a modular, open architecture with standard interfaces, allowing easy optimisation of drive systems for varying requirements.

The use of simulation is a key feature of the IDRIS approach, featuring the development of specialised easy-to-use simulation software that can be used to test control strategies and their effect on performance.

In order to provide a realistic test-bed which will be able to demonstrate and measure the benefits of the IDRIS prototypes, the project will build a machine designed specially for this purpose. This test-bed demonstrator will be complemented by visual aids intended to promote awareness of the results of the project.

The demonstrators will feature a System Management Station designed to allow development, testing or commissioning engineers to view the behaviour of the system and to access the various control parameters for tuning and optimisation purposes.

A number of benefits to the end-user will be demonstrated by the end of the project, such as the implementation of friction compensation techniques to overcome, for example, quadrant transition errors during circular interpolation, and the ability to change speed controller settings in real time to demonstrate the handling of known load-shock disturbances.

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Koordinator

MARI Applied Technologies Ltd
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Adresse
Boldon Business Park Witney Way
NE35 9PE Boldon
Vereinigtes Königreich

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Letzte Aktualisierung: 17 Juni 1994

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Permalink: https://cordis.europa.eu/project/id/2656/de

European Union, 2024