Results 231 to 240 of about 22,047 (273)
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On Secondary Control Principles in Pump Controlled Electro-Hydraulic Linear Actuators
BATH/ASME 2020 Symposium on Fluid Power and Motion Control, 2020Developments in the field of electro-hydraulic linear actuators controlled by variable-speed pump drives have been increasing over the past decade. The majority of these benefits from the speed control loops realized in the associated electric drives, hence these variable-speed pump drives have been operated as flow control units.
Schmidt, Lasse; id_orcid 0000-0002-8002-1287 +3 more
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Advantages of Pump Controlled Electro Hydraulic Actuators
2021Pump controlled hydraulic cylinders or Electro Hydraulic Actuators (EHA) have shown some advantages over common hydraulic systems and Electro Mechanical Cylinder (EMC) systems. EHA applications can be found in airplanes, submarines, mobile hydraulics, etc.
Samo Goljat, Darko Lovrec, Vito Tič
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Time delay control of a pump-controlled electro-hydraulic actuator
2015 15th International Conference on Control, Automation and Systems (ICCAS), 2015This paper presents an accurate position control for a pump-controlled electro-hydraulic actuator (EHA) using time-delay estimation (TDE). The TDE technique is used to estimate nonlinear terms of EHA, which is a third order nonlinear system. The measured signal of linear encoder, and pressure of the EHA are used to implement the TDE technique.
Maolin Jin +5 more
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Design and Simulation Analysis of a Pump-Controlled Actuation System for Heavy-Duty Booms
BATH/ASME 2022 Symposium on Fluid Power and Motion Control, 2022Abstract The electrified pump-controlled hydraulics receives increasing attention from both industry and academia. Its combined advantages of hydraulic and electric actuators result in an expanding application in heavy-duty actuation. One example of such actuation application is the boom.
Xu Han, Manu Leinonen, Tatiana Minav
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Note: Creep character of piezoelectric actuator under switched capacitor charge pump control
Review of Scientific Instruments, 2011A major deficiency in piezoelectric actuator performance is caused by hysteresis and creep effects. Switched capacitor charge pump control was previously proved to be an effective way to reduce hysteresis. In this work, creep character of a piezoelectric stack under charge pump control is investigated and modeled. Experiments show that the creep can be
Yu Ting, Ma +3 more
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Using Leakage to Stabilize a Hydraulic Circuit for Pump Controlled Actuators
Journal of Dynamic Systems, Measurement, and Control, 2013Pump controlled hydraulic actuators offer higher energy efficiency than valve controlled actuators. However, there exists mode switching in pump controlled systems and instability may arise when a single rod cylinder is implemented. This paper examines the problem of system stability in a pump controlled system with single rod cylinders.
Longke Wang, Wayne J. Book
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Performance of a Pump Controlled Asymmetric Actuator: A Comparison of Different Control Methods
ASME/BATH 2014 Symposium on Fluid Power and Motion Control, 2014This paper discusses different stabilizing pump control methods to improve and optimize the damping of a pump controlled asymmetric linear actuator response. The main purpose of the paper has been to study the redeeming features and drawbacks of influencing the actuator response by pump control without direct position, velocity or pressure feedback ...
Mäkinen Esa, Kukkonen Sami
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2016 16th International Conference on Control, Automation and Systems (ICCAS), 2016
This paper studies the high performance robust motion control of a pump-controlled electro-hydrostatic actuation (EHA) with single-rod hydraulic actuator. Started from the observation that EHA system has almost linear dynamics in small operating range, the linear control technique is taken into account.
Hyung-Tae Seo +5 more
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This paper studies the high performance robust motion control of a pump-controlled electro-hydrostatic actuation (EHA) with single-rod hydraulic actuator. Started from the observation that EHA system has almost linear dynamics in small operating range, the linear control technique is taken into account.
Hyung-Tae Seo +5 more
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2020 IEEE/ASME International Conference on Advanced Intelligent Mechatronics (AIM), 2020
This paper presents a novel control design for an active quarter-car suspension with pump-controlled electrohydraulic actuator (EHA) requiring only limited information about the pump-controlled EHA and considering constraints. The control design consists of two parts: force reference generation and force tracking. The force reference is determined by a
Guihai Luo, Gorges Daniel
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This paper presents a novel control design for an active quarter-car suspension with pump-controlled electrohydraulic actuator (EHA) requiring only limited information about the pump-controlled EHA and considering constraints. The control design consists of two parts: force reference generation and force tracking. The force reference is determined by a
Guihai Luo, Gorges Daniel
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