Results 1 to 10 of about 1,153,600 (235)

Model-Free Adaptive Positioning Control of the Bidirectional Stick–Slip Piezoelectric Actuator with Coupled Asymmetric Flexure-Hinge Mechanisms [PDF]

open access: yesSensors, 2023
A model-free adaptive positioning control strategy for piezoelectric stick–slip actuators (PSSAs) with uncertain disturbance is proposed. The designed controller consists of a data-driven self-learning feedforward controller and a model-free adaptive ...
Zhenguo Zhang   +4 more
doaj   +2 more sources

Hysteresis Analysis and Positioning Control for a Magnetic Shape Memory Actuator [PDF]

open access: yesSensors, 2015
Magnetic shape memory alloys (MSM alloys), a new kind of smart materials, have become a potential candidate in many engineering fields. MSMs have the advantage of bearing a huge strain, much larger than other materials.
Jhih-Hong Lin, Mao-Hsiung Chiang
doaj   +2 more sources

Research on positioning control strategy of hydraulic support pushing system based on multistage speed control valve [PDF]

open access: yesScientific Reports
The precise position control of the hydraulic support pushing system in the coal mining face is a key technical support for intelligent coal mining. At present, the hydraulic support pushing system uses the electro-hydraulic directional valve as the ...
Tengyan Hou   +5 more
doaj   +2 more sources

Digital Twins for Industry 4.0 in the 6G Era

open access: yesIEEE Open Journal of Vehicular Technology, 2023
Having the Fifth Generation (5G) mobile communication system recently rolled out in many countries, the wireless community is now setting its eyes on the next era of Sixth Generation (6G).
Bin Han   +12 more
doaj   +1 more source

Online PID Tuning Strategy for Hydraulic Servo Control Systems via SAC-Based Deep Reinforcement Learning

open access: yesMachines, 2023
Proportional–integral–derivative (PID) control is the most common control technique used in hydraulic servo control systems. However, the nonlinearity and uncertainty of the hydraulic system make it challenging for PID control to achieve high-precision ...
Jianhui He   +4 more
doaj   +1 more source

Positioning control of DC servomotor-based antenna using PID tuned compensator [PDF]

open access: yesЖурнал інженерних наук, 2021
Direct current (DC) servomotor-based parabolic antenna is automatically positioned using control technique to track satellite by maintaining the desired line of sight for quality transmission and reception of electromagnetic wave signals in ...
Eze P. C., Ugoh C. A., Inaibo D. S.
doaj   +1 more source

Robust positioning control of pneumatic servo system with pressure control loop [PDF]

open access: yes, 1995
The goal of this paper is to attain a robust positioning control of a pneumatic driving system. A positioning control system positively focusing on the pressure control is investigated from the view that the pressure control is indispensable for ...
Noritsugu, Toshiro, Takaiwa, Masahiro
core   +1 more source

Motion and vibration control of a stacker crane by 2-degree-of-freedom model-following control using an internal characteristic of the model

open access: yesNihon Kikai Gakkai ronbunshu, 2020
In the logistic system, it is necessary to reduce the weight of the structure to realize energy-saving and highly efficient conveyance of a stacker crane that conveys packages in a warehouse.
Takeshi MURAKAMI, Koichi OSUKA
doaj   +1 more source

Two-degree-of-freedom control scheme for flying-height and tracking-position controls with thermal actuators in HDDs

open access: yesJournal of Advanced Mechanical Design, Systems, and Manufacturing, 2018
To improve positioning accuracy of a magnetic head in hard disk drives (HDDs), a triple-stage-actuator system was proposed with a thermal positioning actuator for a magnetic head positioning system. This positioning system has three types of actuators: a
Takenori ATSUMI
doaj   +1 more source

Mechanism Development and Position Control of Smart Buoy Robot

open access: yes한국해양공학회지, 2021
There is a gradual increase in the need for energy charging in marine environments because of energy limitations experienced by electric ships and marine robots.
Hwi-Geun Park, Hyun-Sik Kim
doaj   +1 more source

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