INVESTIGATION OF LOCAL AND MODAL BASED ACTIVE VIBRATION CONTROL STRATEGIES ON THE EXAMPLE OF AN ELASTIC SYSTEM
Journal Title: Journal of Machine Engineering - Year 2019, Vol 19, Issue 2
Abstract
Nowadays, feed axes are often equipped with multiple parallel-acting actuators in order to increase the dynamics of the machine tool. Also, additional actuators for active damping are widely used. Normally, the drives or actuators are controlled independently without consideration for the impact on each other. In contrast, by using the modal space control, the system can be decoupled and the modal control loops can be adjusted independently. This control approach is particularly suitable for motion systems, such as machine tools, which have more drives or actuators than degrees of freedom of movement. This paper deals with the pre-investigation of the modal-based vibration control for machine tools with additional actuators. The object of investigation is an elastic system with a movable saddle. The modal-based control is compared with a local control approach. The results obtained experimentally on the test rig are presented. The modal control is superior since, with the modal approach, each control loop corresponds to a specific vibration mode, and the control law for this loop is designed to provide the desired performance of the control system at the corresponding resonance frequency. The parameterisation of the control loops is simplified by modal control, since the modes can be controlled independently.<br/><br/>
Authors and Affiliations
Christoph PEUKERT, Patrick PÖHLMANN, Marcel MERX, Steffen IHLENFELDT, Jens MÜLLER
Keywords
Related Articles
- EP ID EP599575
- DOI 10.5604/01.3001.0013.2222
- Views 80
- Downloads 0
EXTENSION OF A PHASE TRANSFORMATION MODEL FOR PARTIAL HARDENING IN HOT STAMPING
The quality of predicted microstructural and mechanical properties in hot stamping simulations relies considerably on the material model. Many researchers studied the effect of the plastic deformation on the phase transf...
MODELLING OF A GLASS GATHERER ROBOT ARM WITH A FRICTIONAL DAMPER
A numerical model of a friction damper used for damping vibration in glass gatherer robots was described. The damper with a lance was modelled using finite elements. Primary natural frequency of the system was determine...
Application of bat-cell bio-ambient tests in exhaust gas emissions examinations for Euro 4 and Euro 6 combustion engines
The introduction of the subsequent European emission standards raises controversy among vehicle manufacturers and researchers. In order to meet the legal requirements, it is necessary to continually improve not only the...
MACHINE TOOL ABILITY REPRESENTATION: A REVIEW
Smart manufacturing and predictive maintenance are current trends in the manufacturing industry. However, the holistic understanding of the machine tool health condition in terms of accuracy, functions, process and avai...
INTELLIGENT MACHINING: REAL-TIME TOOL CONDITION MONITORING AND INTELLIGENT ADAPTIVE CONTROL SYSTEMS
Unmanned manufacturing systems has recently gained great interest due to the ever increasing requirements of optimized machining for the realization of the fourth industrial revolution in manufacturing ‘Industry 4.0’. R...