Position and Speed Double Closed Loop Control Performance of Electro-Hydraulic Actuator System Research Based on AMESim

2015 ◽  
Vol 779 ◽  
pp. 220-225
Author(s):  
Jing Hu ◽  
Ming Liu ◽  
Wei Li
Keyword(s):  
Control Strategy ◽  
System Performance ◽  
Closed Loop ◽  
Research Work ◽  
Speed Control ◽  
Simulation Software ◽  
Good Effect ◽  
Stable Operation ◽  
Hydraulic Actuator ◽  
Actuator System

In the paper, we research on a preparatory electro-hydraulic actuator product, using the simulation software AMESim to research work to analyze the system performance. We research position in closed loop servo actuator system, generally only considered the requirements of the position. While the speed trajectory and precision control did not do high demand. The position of the system by increasing the speed control strategy module, the system meets the requirements of the position. At the same time, we can achieve speeds start-up operation, stable operation and stopped operation of the three phases according to the requirement following a given trajectory; simultaneously can carry out detailed system performance analysis and research. Simulation results show that increasing position speed control strategy module of the system get very good effect. It can realize the speed control system and satisfy the system output displacement and speed steady-state performance and dynamic response.

Orbitally stabilizing control for the underactuated translational oscillator with rotational actuator system: Design and experimentation

2018 ◽  
Vol 233 (5) ◽  
pp. 491-500 ◽  
Author(s):  
Chuande Liu ◽  
Bingtuan Gao ◽  
Jianguo Zhao ◽  
Syed Awais Ali Shah
Keyword(s):  
Control Strategy ◽  
Equilibrium Points ◽  
Research Work ◽  
Sustained Oscillation ◽  
Mechatronic Systems ◽  
Control Lyapunov Function ◽  
Stabilizing Controller ◽  
Stabilizing Control ◽  
Actuator System ◽  
Rotational Actuator

Underactuated translational oscillator with rotational actuator systems are simplified mechatronic systems introduced to investigate the despin maneuver phenomenon for dual-spin spacecrafts in mechanical engineering. The conventional research work for translational oscillator with rotational actuator systems mainly focuses on stabilizing control of equilibrium points. In this article, an orbitally stabilizing control strategy is proposed to steer oscillating movements of a translational oscillator with rotational actuator system. Based on the natural periodicity of translational oscillator with rotational actuator system self-sustained oscillation, the dynamics is analyzed to derive the periodically orbital functions of the translational oscillator with rotational actuator system. Then, a proper control Lyapunov function following the principle of energy conservation is designed to obtain orbitally stabilizing controller for target periodical oscillation orbits of the translational oscillator with rotational actuator system. Finally, the validity of the presented control strategy is demonstrated via the simulations and experiments.

scholarly journals Active Vibration Control of Rotating Machinery With a Hybrid Piezo-Hydraulic Actuator System

1994 ◽  
Author(s):  
Punan Tang ◽  
Alan B. Palazzolo ◽  
Albert F. Kascak ◽  
Gerald T. Montague
Keyword(s):  
Vibration Control ◽  
Closed Loop ◽  
Active Vibration Control ◽  
Aircraft Engines ◽  
Test Results ◽  
Hydraulic Actuator ◽  
Low Viscosity ◽  
Actuator System ◽  
Active Vibration ◽  
Hybrid Actuator

An integrated, compact piezo-hydraulic actuator system for active vibration was designed and developed with a primary application for gas turbine aircraft engines. Copper tube was chosen as the transmission line material for ease of assembly. Liquid plastic which meets incompressibility and low viscosity requirements was adjusted to provide optimal actuator performance. Variants of the liquid plastic have been prepared with desired properties between −40°F and 400° F. The effectiveness of this hybrid actuator for active vibration control (AVC) was demonstrated for suppressing critical speed vibration through two critical speeds for various levels of intentionally placed imbalance. A high accuracy closed loop simulation which combines both finite element and state space methods was applied for the closed loop unbalance response simulation with/without AVC. Good correlation between the simulation and test results was achieved.

Development of High Bandwidth Flexure Based Stage for Nanopositioning Applications

2018 ◽  
Vol 24 (8) ◽  
pp. 5989-5993 ◽  
Author(s):  
T. Narendra Reddy ◽  
S. N Vithun ◽  
Prakash Vinod ◽  
Shrikantha S Rao ◽  
Mervin Herbert
Keyword(s):  
System Performance ◽  
High Speed ◽  
Closed Loop ◽  
Materials Science ◽  
Research Work ◽  
Structural Vibrations ◽  
Closed Loop Systems ◽  
High Bandwidth ◽  
Optical Focusing ◽  
And Control

Micro and Nanopositioning systems are widely used in semiconductor, optics, materials science, photonics packaging, optical focusing objectives etc. This paper is focused on development of high bandwidth flexure based stage for nanopositioning requirements. The speed, nano-metric motions and positioning accuracy are limited based on the structural vibrations of the flexure based nanopositioning, non-linear characteristics of the piezo-actuators and control system performance. The research work carried out includes design of complaint mechanisms, fabrication of flexure stages and implementation of closed loop systems to achieve high bandwidth positioning applications. The developed high speed and high bandwidth nanopositioning system are tested for accuracy, linearity and cross talk motions for Nanopositioning applications.

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