scholarly journals Motion Control of a Hydraulic Parallel-Link Servomechanism with Three Degrees of Freedom on a Plane (2nd Report)- Control of profile trajectory and acceleration waveform using multipreview control-

2004 ◽  
Vol 35 (2) ◽  
pp. 36-42
Author(s):  
Worapod SEREERAT ◽  
Sanroku SATO
Keyword(s):  
Motion Control ◽  
Degrees Of Freedom ◽  
Parallel Link ◽  
Three Degrees Of Freedom

A Microcontroller Based Controller Circuit for the Motion Control of an Articulated Robot with Three Degrees of Freedom

2011 ◽  
Vol 201-203 ◽  
pp. 1960-1965
Author(s):  
Enaiyat Ghani Ovy ◽  
Mohammad Rokonuzzaman ◽  
Shah Muhammad Ferdous ◽  
Nurul Absar Chowdhury
Keyword(s):  
Motion Control ◽  
Degrees Of Freedom ◽  
Robotic Arm ◽  
Manufacturing Processes ◽  
C Programming Language ◽  
Automation Systems ◽  
C Programming ◽  
Stepper Motors ◽  
Articulated Robot ◽  
Three Degrees Of Freedom

Due to the quick evolution of manufacturing processes, the demand for more flexible automation systems is on the rise. To answer these requirements, distributed motion control architecture based on intelligent drives tends more and more to replace the traditional solutions. This paper presents the control of an articulated arm robot with three degrees of freedom. The essential part of the robotic arm is a programmable microcontroller based system capable of driving basically three stepper motors design to form an anthropomorphic structure. This paper explains the method of interfacing the robotic arm stepper motors with the programmed Atmega16 microcontroller which is used to control the robot operations. C programming language is employed here in programming the microcontroller.

Motion Control Concepts for the Hydraulic Infinite Linear Actuator

2016 ◽  
Author(s):  
Martin Hochwallner ◽  
Petter Krus
Keyword(s):  
Motion Control ◽  
Digital Control ◽  
Hydraulic System ◽  
Degrees Of Freedom ◽  
The Other ◽  
Linear Actuator ◽  
The Novel ◽  
Smooth Motion ◽  
Three Degrees Of Freedom ◽  
Infinite Linear

This contribution presents the novel Hydraulic Infinite Linear Actuator (HILA). It focuses on the control of motion and is based on simulation and analysis. The novel actuator consists of two symmetric double acting cylinders with a common piston rod and hydraulically detachable pistons. Alternatingly one cylinder engages and drives the load while the other retracts, the HILA thus works in a kind of rope climbing motion. The purpose of this contribution is to study the motion control of the HILA and to mimic the behaviour of a conventional cylinder. The HILA has three degrees of freedom which are temporarily coupled compared with one in a conventional cylinder. Further, the HILA with the chosen hydraulic system has two continuous and two digital control inputs. The challenge to be tackled is to combine the short stroke back and forth motions of the cylinders into a continuous smooth motion ofthe whole actuator. Results from simulations and analyses show that the investigated concepts can keep the jerk within acceptable limits for many applications.

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