Active vibration isolation of machine tools using an electro-hydraulic actuator

Law, Mohit; Wabner, Markus; Colditz, A.; Kolouch, Martin; Noack, S.; Ihlenfeldt, Steffen

doi:10.1016/j.cirpj.2015.05.005

Cited by 33 publications

(15 citation statements)

References 8 publications

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“…Here, the position of the hydraulic cylinder is adjusted directly by the bidirectional pump, with the support of two pilot-operated check valves and two pressure relief valves [5,6]. Because of their advantages, various types of EHAs have been commercialized and are widely used in different industrial applications, including active vibration isolation of machine tools [7] and wing control and landing gear control in aircraft [8][9][10]. Among these, a class of compact EHAs from Kayaba Industrial Company, known as mini motion packages (MMPs), is considered one of the most feasible solutions for applications requiring short operating ranges and high output power.…”

Section: Introductionmentioning

confidence: 99%

Sensor Fault-Tolerant Control Design for Mini Motion Package Electro-Hydraulic Actuator

Nguyen

2019

Processes

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With the rapid development of computer science and information and communication technology (ICT), increasingly intelligent, and complex systems have been applied to industries as well as human life. Fault-tolerant control (FTC) has, therefore, become one of the most important topics attracting attention from both engineers and researchers to maintain system performances when faults occur. The ultimate goal of this study was to develop a sensor fault-tolerant control (SFTC) to enhance the robust position tracking control of a class of electro-hydraulic actuators called mini motion packages (MMPs), which are widely used for applications requiring large force-displacement ratios. First, a mathematical model of the MMP system is presented, which is then applied in the position control process of the MMP system. Here, a well-known proportional, integrated and derivative (PID) control algorithm is employed to ensure the positional response to the reference position. Second, an unknown input observer (UIO) is designed to estimate the state vector and sensor faults using a linear matrix inequality (LMI) optimization algorithm. Then an SFTC is used to deal with sensor faults of the MMP system. The SFTC is formed of the fault detection and the fault compensation with the goal of determining the location, time of occurrence, and magnitude of the faults in the fault signal compensation process. Finally, numerical simulations were run to demonstrate the superior performance of the proposed approach compared to traditional tracking control.

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Section: Introductionmentioning

confidence: 99%

Sensor Fault-Tolerant Control Design for Mini Motion Package Electro-Hydraulic Actuator

Nguyen

2019

Processes

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“…Based on the classical friction model, Bui et al [7] built the nonlinear friction model of the machine feed system under high-speed motion, and the average contour error of the new friction model was reduced by 26% comparing with the classical friction model. For the vibration caused by external environment, Law et al [8] studied the suppression of machine vibration by using electrohydraulic actuators. Yang et al [9] studied the vibration of the heavy-duty machine tool.…”

Section: Introductionmentioning

confidence: 99%

Analysis of Tangential Nonlinear Vibration on Machine Hydrostatic Slide

Zhang

Gao

et al. 2019

Shock and Vibration

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In this paper, the nonlinear dynamic responses of the hydrostatic slide were investigated and the effects of damping and external force to control the vibration system were discussed. The dynamic model of the system was established, and the tangential vibration equation taking into account nonlinear factors was derived. The heteroclinic orbit parameter equations of the vibration system were solved, and the Melnikov function of vibration system is derived. And the chaos condition and judging criterion of the vibration system were obtained by Melnikov’s method. The vibration equation of the hydrostatic slide was solved using the numerical method. The bifurcation diagram, phase diagram, wave diagram of displacement, and Poincaré map were obtained, and the nonlinear dynamic responses were analyzed. Finally validation experiments were conducted, and the results agree well with the results obtained by the Melnikov method and numerical method.

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“…Chen et al (2014) present the design of a novel three-degrees-of-freedom linear magnetic actuator which increases the damping and static stiffness of flexible structures during machining. The actuator uses electromagnetic materials which allow larger load capacity and almost no hysteresis compared to piezo and magnetostrictive materials such as Law et al (2015) report on a novel electro-hydraulic actuator that attenuates and isolates ground motion to keel dynamic excitations transmitted to machine tools below permissible levels. The analysis of optimal placement of actuators can also lead to increased efficiency and thus has to be taken into consideration (Okwudire and Lee 2013).…”

Section: Reconfigurable Machine Toolsmentioning

confidence: 99%

Sustainable Solutions for Machine Tools

Uhlmann

Lang

Prasol

et al. 2017

Sustainable Production, Life Cycle Engineering and Management

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Environmental, economic and social changes of any significant proportions cannot take place without a major shift in the manufacturing sector. In today's manufacturing processes, economic efficiency is realised through high volumes with the use of specialised machine tools. Change in society, such as in the form of mobility and digitisation, requires a complete overhaul in terms of thinking in the manufacturing industry. Moreover, the manufacturing industry contributes over 19 % to the world's greenhouse gas emissions. As a consequence of these issues, a demand for sustainable solutions in the production industry is increasing. In particular, the concept of "cost" in manufacturing processes and thus the "system boundaries" within the production of the future has to be changed. That is, a great number of aspects to the machine tool and production technology industries can be improved upon in order to achieve a more sustainable production environment. Within this chapter, the focus lies on microsystem technology enhanced modular machine tool frames, adaptive mechatronic components, as well as on internallycooled cutting tools. An innovative machine tool concept has been developed recently, featuring a modular machine tool frame using microsystem technology for communication within the frame, which allows for a high level of flexibility. Furthermore, add-on upgrading systems for outdated machine tools-which are particularly relevant for developing and emerging countries-are poised to gain in importance in the upcoming years. The system described here enables the accuracy of outdated machine tools to be increased, thus making these machine tools comparable to modern machine tool systems. Finally, the cutting process requires solutions for dry machining, as the use of cooling lubricants is environmentally damaging and a significant cost contributor in machining processes. One such solution is the use of internally cooled cutting tools.

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Active vibration isolation of machine tools using an electro-hydraulic actuator

Cited by 33 publications

References 8 publications

Sensor Fault-Tolerant Control Design for Mini Motion Package Electro-Hydraulic Actuator

Sensor Fault-Tolerant Control Design for Mini Motion Package Electro-Hydraulic Actuator

Analysis of Tangential Nonlinear Vibration on Machine Hydrostatic Slide

Sustainable Solutions for Machine Tools

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