Verification of the feed-forward control for a piezoelectric actuator using differential flatness approach

2018 ◽  
Vol 30 (3) ◽  
pp. 438-444
Author(s):  
Jomah Alzoubi ◽  
Shadi A Alboon ◽  
Amin Alqudah
Keyword(s):  
Mobile Devices ◽  
Piezoelectric Actuator ◽  
Experimental Results ◽  
Control Voltage ◽  
Differential Flatness ◽  
Digital Cameras ◽  
Precise Positioning ◽  
Feed Forward ◽  
Feed Forward Control ◽  
Micro Technology

In the last decade, the applications of nano- and micro-technology are widely used in many fields. In the modern mobile devices, such as digital cameras, there is an increased demand to achieve fast and precise positioning for some parts such as the recording sensor. Therefore, a smart material (piezoelectric) is used to achieve this requirement. This article discusses the feed-forward control for a piezoelectric actuator using differential flatness approach. The differential flatness approach is used to calculate the required voltage to control the piezoelectric actuator movement. The control voltage will be applied to the real actuator. The simulation and experimental results are compared for the actuator. The aim of this article is to verify the feed-forward control for second eigenfrequency using the differential flatness approach for the piezoelectric actuator.

Research on Current Control of Photovoltaic Grid-Connected Inverter

2013 ◽  
Vol 291-294 ◽  
pp. 2446-2451
Author(s):  
Yan Zhang ◽  
Wei Wang ◽  
Shi Tao Wang
Keyword(s):  
Phase Difference ◽  
Field Experiments ◽  
Current Control ◽  
Experimental Results ◽  
Current Frequency ◽  
Feed Forward ◽  
Grid Voltage ◽  
Feed Forward Control ◽  
Grid Connected Inverter

Grid-voltage feed-forward control was added to improve the grid-connected current quality on photovoltaic grid-connected inverter. The method decreases the phase difference between the grid-connected current and grid voltage and reduces the total harmonics distortion (THD) of grid-connected current. So the grid-voltage feed-forward compensation can improve grid-connected current availably and keep the current frequency and phase synchronous to the grid. The study is validated through simulations and field experiments. Experimental results obtained on 2.5-kw inverter demonstrate the feasibility of the proposed method.

Feed-forward control of stack piezoelectric actuator

2016 ◽  
Vol 24 (9) ◽  
pp. 2248-2254 ◽  
Author(s):  
刘长利 LIU Chang-li ◽  
胡守柱 HU Shou-zhu ◽  
郭海林 GUO Hai-lin ◽  
王学军 WANG Xue-jun ◽  
章文俊 ZHANG Wen-jun
Keyword(s):  
Piezoelectric Actuator ◽  
Feed Forward ◽  
Feed Forward Control

Tilting-Rotor Quadcopter for Aggressive Flight Maneuvers Using Differential Flatness Based Flight Controller

2017 ◽  
Author(s):  
Rumit Kumar ◽  
Alireza Nemati ◽  
Manish Kumar ◽  
Rajnikant Sharma ◽  
Kelly Cohen ◽  
...  
Keyword(s):  
Position Control ◽  
Differential Flatness ◽  
Feed Forward ◽  
Autonomous Flight ◽  
Control Approach ◽  
Tilt Rotor ◽  
Feed Forward Control ◽  
Position And Orientation ◽  
Complex Trajectory ◽  
Complex Trajectories

In this paper, we present a feed-forward control approach for complex trajectory tracking by a tilting-rotor quadcopter during autonomous flight. Tilting-rotor quadcopter is a more agile version of conventional quadcopter as the propeller motors are actuated to tilt about the quadcopter arm. The tilt-rotor quad-copter is capable of following complex trajectories with ease. In this paper, we employ differential flatness based feed-forward position control by utilizing a combination of propeller rotational speeds along with rotor tilts. The rotational motion of propellers work simultaneously in sync with propeller tilts to control the position and orientation of the UAV during autonomous flight. The results for tracking complex trajectories have been presented by performing numerical simulations and a comparison is shown with respect to conventional quadcopter for similar flight conditions. It has been found that the tilt-rotor quadcopter is more efficient than the conventional quadcopter during complex trajectory following maneuvers.

scholarly journals Feed-Forward Control of Open Channel Flow Using Differential Flatness

2010 ◽  
Vol 18 (1) ◽  
pp. 213-221 ◽  
Author(s):  
Tarek S. Rabbani ◽  
Florent Di Meglio ◽  
Xavier Litrico ◽  
Alexandre M. Bayen
Keyword(s):  
Channel Flow ◽  
Open Channel ◽  
Open Channel Flow ◽  
Differential Flatness ◽  
Feed Forward ◽  
Feed Forward Control

scholarly journals Model-based feed-forward control for time-varying systems with an example for SRF cavities

2020 ◽  
Vol 53 (2) ◽  
pp. 1331-1336
Author(s):  
Sven Pfeiffer ◽  
Annika Eichler ◽  
Holger Schlarb
Keyword(s):  
Time Varying ◽  
Feed Forward ◽  
Feed Forward Control ◽  
Model Based ◽  
Time Varying Systems ◽  
Srf Cavities

Flatness Feed-Forward Control Model Based on Neural Networks

2014 ◽  
Vol 989-994 ◽  
pp. 3386-3389
Author(s):  
Zhu Wen Yan ◽  
Hen An Bu ◽  
Dian Hua Zhang ◽  
Jie Sun
Keyword(s):  
Neural Networks ◽  
Rolling Mill ◽  
Rolling Force ◽  
Work Roll ◽  
Control Model ◽  
Good Effect ◽  
Feed Forward ◽  
Force Fluctuations ◽  
Feed Forward Control ◽  
Roll Bending

The influence on the shape of the strip from rolling force fluctuations has been analyzed. The combination of intermediate roll bending and work roll bending has been adopted. The principle of rolling force feed-forward control has been analyzed. The feed-forward control model has been established on the basis of neural networks. The model has been successfully applied to a rolling mill and a good effect has been achieved.

scholarly journals Feed-forward control of preshaping in the rat is mediated by the corticospinal tract

2010 ◽  
Vol 32 (10) ◽  
pp. 1678-1685 ◽  
Author(s):  
Jason B. Carmel ◽  
Sangsoo Kim ◽  
Marcel Brus-Ramer ◽  
John H. Martin
Keyword(s):  
Corticospinal Tract ◽  
Feed Forward ◽  
Feed Forward Control
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