The proceedings contains 7 articles. Topics discussed include the control and commissioning of high precision mechanical systems using advanced digital motion control algorithms, automating a horizontal flow-wrapping ...
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The proceedings contains 7 articles. Topics discussed include the control and commissioning of high precision mechanical systems using advanced digital motion control algorithms, automating a horizontal flow-wrapping machine, PC control of an automatic flexible assembly operation, manufacturing machinery, the synchronisation of servo drives using fuzzy logic control, IEC 1131-3 programming for motion control and mechatronic approach to the design of a flexible carpet loom.
The United Kingdom is well placed to exploit modular, configurable technology in manufacturing machinery to commercial advantage. The paper mainly considers how the Machinery Technology Centre and the University Conso...
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The United Kingdom is well placed to exploit modular, configurable technology in manufacturing machinery to commercial advantage. The paper mainly considers how the Machinery Technology Centre and the University Consortium are trying to assist this exploitation by encouraging the transfer and implementation of the technology in industry and its continued renewal. Although small, it is hoped that these organizations will provide role models for future national initiatives.
Programmable Transmission System (PTS) is designed to improve the flexibility and performance of wrapping and packaging machines. PTS replaces mechanical linkages with separately controlled servo motors. An example of...
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Programmable Transmission System (PTS) is designed to improve the flexibility and performance of wrapping and packaging machines. PTS replaces mechanical linkages with separately controlled servo motors. An example of which is the horizontal flow-wrapping machine used to wrap solid or filled bar products. The purpose of this work is to discuss the application of the PTS to this type of machine with emphasis directed to the requirements of the machine and what features of the PTS are used to address them.
This study focuses on the VME based multi processor, multi axis control system which has wide application in high precision production machines. A mechatronics approach adopted throughout the project resulted in a ver...
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This study focuses on the VME based multi processor, multi axis control system which has wide application in high precision production machines. A mechatronics approach adopted throughout the project resulted in a very dramatic improvement in system performance. It will be shown that state control techniques offer a viable approach to designing distributed intelligent controls for fast acting precision servosystems. Two self commissioning strategies are implemented. Results obtained are discussed and compared to the 'tuning parameters' set by an experienced commissioning engineer.
A control scheme for the control of an automatic flexible assembly machine is presented. The design of the assembly machine is postulated based on techniques offered by new programmable controllers and has three sub-s...
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A control scheme for the control of an automatic flexible assembly machine is presented. The design of the assembly machine is postulated based on techniques offered by new programmable controllers and has three sub-systems, two of which are servo driven subsystems. The design is completed through establishment of a number of positions defined as points. These points are formed into trajectories. This design is found to perform and accurately computes according to the design intent, with the trajectory tracking performed accurately for varying speeds. This shows that the ability to produce good motion designs coupled with intelligent motion controllers provides a new opportunity to develop co-operating multi-axis systems especially when used for assembly tasks.
The IEC 1131-3 international standards define a set of languages that include graphical and textural representations. In line with this, Eurotherm developed a tool called Flexible Machinery controller (FMC) to provide...
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The IEC 1131-3 international standards define a set of languages that include graphical and textural representations. In line with this, Eurotherm developed a tool called Flexible Machinery controller (FMC) to provide the user with an environment in which a control application can be developed using these standard languages. This technology provides a rapid means to implement and prove complex motion control designs.
Motion controllers are an essential component of modern manufacturing machinery. The computer controlsystems are a key part in designing and building production machines. Due to a lack of solid mechanical parts to au...
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Motion controllers are an essential component of modern manufacturing machinery. The computer controlsystems are a key part in designing and building production machines. Due to a lack of solid mechanical parts to automatically link motions, coordination and synchronisation problems among the interactive motions are the one of major barriers which can hamper further advances with the new design philosophy. The tight control and flexible operation of a machine with multi-axes can only be realised if the software controlled drives can be properly coordinated and synchronised. This paper presents the concept and implementation of a scheme that uses a fuzzy logic control approach to realise enhanced drive synchronisation. A new master-slave configuration using fuzzy logic is developed. Imperfect synchronisation can be corrected on-line. The simulation and experimental results show that the fuzzy based 'closed loop synchronisation mechanism' gives enhanced performance when compared to conventional master-slave open loop synchronisation techniques.
This paper describes modelling and control of a high speed manufacturing machine where the control problem involves continuous path tracking to make a compliant machine tool follow a pre-determined 3-D profile. A typi...
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This paper describes modelling and control of a high speed manufacturing machine where the control problem involves continuous path tracking to make a compliant machine tool follow a pre-determined 3-D profile. A typical application area is the area of robot arm control in material finishing processes. Open-loop control via a stepper motor drive is compared to closed-loop control using a DC servo motor with position feedback. In this second configuration, the response of the system using a conventional PI controller is also compared with that of a fuzzy logic controller.
A mechatronic solution ensuring consistent surface quality is to develop intelligent control of electro-hydraulic servosystems, which vibrate the cutter head in anti phase to cancel out the inherent mechanical forced...
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A mechatronic solution ensuring consistent surface quality is to develop intelligent control of electro-hydraulic servosystems, which vibrate the cutter head in anti phase to cancel out the inherent mechanical forced vibrations. To fulfill the task, an optical-laser non-contact in process measuring system is developed. Following this, a hydraulic digital valve is employed as actuator which can meet the needs of quick response and high switching speed performance. Finally, it is shown that certain machine fault features are inherent within manufactured product surface contours.
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