A linked velocity profile design for effective motion control of hydraulic systems

2011 ◽  
Author(s):  
Sung Su Yoon ◽  
Hung Van Hoang ◽  
Jae Wook Jeon
Keyword(s):  
Velocity Profile ◽  
Motion Control ◽  
Hydraulic Systems ◽  
Profile Design

Stable and High Performance Energy-Efficient Motion Control of Electric Load Sensing Controlled Hydraulic Manipulators

2013 ◽  
Author(s):  
Janne Koivumäki ◽  
Jouni Mattila
Keyword(s):  
Motion Control ◽  
Energy Efficient ◽  
High Performance ◽  
System Stability ◽  
Electric Load ◽  
Hydraulic Systems ◽  
Control Approach ◽  
Load Sensing ◽  
Hydraulic Manipulators ◽  
Control Scheme

In order to achieve higher energy efficiency for hydraulic systems the Load Sensing (LS) systems, i.e. a Variable Displacement Pump (VDP) with hydro-mechanical control system, can be considered as a state-of-the-art solution. However, as is well known, these traditional hydraulic LS-systems are usually characterized by difficulties in tuning, which can lead to system stability problems. In our previous studies, we have developed a high precision motion control for hydraulic manipulators with separate meter-in meter-out controlled hydraulic actuators. Our control approach was based on the Virtual Decomposition Control (VDC) approach that ensured high motion tracking performance while rigorously guaranteeing the system stability. In this paper, we propose both energy-efficient and high performance nonlinear model based motion control scheme that utilizes the developed servocontrolled Electric Load Sensing (ELS) system for hydraulic robotic manipulators. Experimental results are presented with the proposed ELS-controlled VDP and hydraulic manipulator lifting servoactuator that utilized a separate meter-in meter-out flow control scheme.

Variable-Geometry Motion Control of an Aircraft Door

1999 ◽  
Vol 121 (2) ◽  
pp. 195-199
Author(s):  
L. Beiner
Keyword(s):  
Velocity Profile ◽  
Boundary Value Problem ◽  
Constrained Optimization ◽  
Motion Control ◽  
Initial Position ◽  
Variable Geometry ◽  
Final Position ◽  
Point Boundary ◽  
Lower Edge ◽  
Bevel Gears

The paper deals with the motion control of an aircraft door hinged at its lower edge. The door opens under the influence of weight, restrained by cross-mounted air springs and dampers. The goal is to mechanically control the motion so as to bring the door in a specified time from rest at a specified initial position to rest at a specified final position, while minimizing the peak force in the dampers. It is shown that such a velocity profile requires to engage the dampers at an optimized position and simultaneously start to modulate the spring moment so that it equals the weight moment at the final position. A variable-geometry solution is proposed consisting of a mechanical feedback in which the door rotation drives an elongation of the spring levers via bevel gears and screw leads. The associated double two point boundary value problem is solved by casting it into a constrained optimization form, yielding the required damper engagement position, the amount of spring lever extension and the damper lever length. The approach is illustrated by a design example.

Asymptotic Adaptive Motion Control of Hydraulic Systems

2021 ◽  
Author(s):  
Xiaowei Yang ◽  
Jianyong Yao ◽  
Wenxiang Deng ◽  
Shusen Yuan ◽  
Xianglong Liang
Keyword(s):  
Motion Control ◽  
Hydraulic Systems ◽  
Adaptive Motion

Asymmetric Velocity Profile with Fixed Motion Time for Motion Control

2012 ◽  
Vol 6 (1) ◽  
pp. 593-598
Author(s):  
Teng Li ◽  
Yanjie Liu ◽  
Lining Sun
Keyword(s):  
Velocity Profile ◽  
Motion Control ◽  
Motion Time

scholarly journals Trolley Motion Control Based on S-shaped Velocity Profile for Quay Crane Cargo Oscillation Comparison

2017 ◽  
Vol 9 (3) ◽  
pp. 283-288
Author(s):  
Tomas Eglynas ◽  
Marijonas Bogdevičius ◽  
Arūnas Andziulis ◽  
Mindaugas Jusis
Keyword(s):  
Velocity Profile ◽  
Motion Control ◽  
Velocity Profiles ◽  
Minimum Time ◽  
Scaled Model ◽  
Crane Control ◽  
Quay Cranes ◽  
Profiling Techniques

Quay cranes are used to move containers from ship to store in minimum time so that the load reaches its destination without payload oscillation. During the operations, containers are suspended by cables and it’s free to swing by motion. This paper investigates the two different velocity profiling techniques used for quay crane control and cargo stabilization. A laboratory scaled model of a crane is used to experimentally research, where the trolley acceleration is used as input, for suppressing the container sway. The residual cargo oscillation problems using different velocity profiles are discussed.

Optical Pickup Feeding Velocity Profile Design of Optical Disk Storage

2001 ◽  
Vol 40 (Part 1, No. 3B) ◽  
pp. 1749-1750
Author(s):  
Juhn Ho Park ◽  
Heui-Sik Seo ◽  
Jung Joon Lee ◽  
Byunghoon Min ◽  
Heuigi Son
Keyword(s):  
Velocity Profile ◽  
Optical Disk ◽  
Optical Pickup ◽  
Disk Storage ◽  
Profile Design
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