Delay compensation based controller for rotary electrohydraulic servo system
Sign Up to like & getrecommendations! Published in 2021 at "International Journal of Dynamics and Control"
DOI: 10.1007/s40435-020-00752-6
Abstract: The typical power-assisted hip exoskeleton utilizes rotary electrohydraulic actuator to carry out strength augmentation required by many tasks such as running, lifting loads and climbing up. Nevertheless, it is difficult to precisely control it due… read more here.
Keywords: system; rotary electrohydraulic; controller; dead time ... See more keywords
Model-Free Observer for Speed and Acceleration Estimations for Speed Servo System Applications
Sign Up to like & getrecommendations! Published in 2022 at "IEEE Transactions on Circuits and Systems II: Express Briefs"
DOI: 10.1109/tcsii.2022.3191718
Abstract: This brief presents a speed and acceleration estimation mechanism combining a Luenberger-type observer and a nonlinear second-order disturbance observer (DOB) using servo system angle measurements without system parameters and load information. The resultant observer has… read more here.
Keywords: speed acceleration; system; servo system; speed servo ... See more keywords
Design of a Grid-Connected Multiphase Servo System Without DC-Link Capacitor
Sign Up to like & getrecommendations! Published in 2020 at "IEEE Transactions on Magnetics"
DOI: 10.1109/tmag.2019.2945769
Abstract: In this article, a direct grid-connected servo system without a dc-link capacitor is proposed for multiphase machines. First, the modeling and field-oriented control are elaborated for the direct grid-connected multiphase servo system. Then, the space… read more here.
Keywords: system; multiphase; link; grid connected ... See more keywords
Robust Speed Regulation for PMSM Servo System With Multiple Sources of Disturbances via an Augmented Disturbance Observer
Sign Up to like & getrecommendations! Published in 2018 at "IEEE/ASME Transactions on Mechatronics"
DOI: 10.1109/tmech.2018.2799326
Abstract: Permanent magnet synchronous motors are extensively used in high-performance industrial applications. However, plenty of practical factors (e.g., cogging torques, load torques, friction torques, measurement error effects, dead-time effects, and parameter perturbations) in the closed-loop servo… read more here.
Keywords: sources disturbances; multiple sources; system; servo system ... See more keywords
A New Load Adaptive Identification Method Based on an Improved Sliding Mode Observer for PMSM Position Servo System
Sign Up to like & getrecommendations! Published in 2021 at "IEEE Transactions on Power Electronics"
DOI: 10.1109/tpel.2020.3016713
Abstract: The effective identification of the load torque is one of the key methods to improve the positioning accuracy of the position servo system, and the sliding mode observer (SMO) is a common identification method in… read more here.
Keywords: position servo; servo system; identification; load ... See more keywords
Linear active disturbance rejection control for the electro-hydraulic position servo system
Sign Up to like & getrecommendations! Published in 2021 at "Science Progress"
DOI: 10.1177/00368504211000907
Abstract: Valve-controlled asymmetric cylinder is widely used in servo loading system. As a kind of typical electro-hydraulic servo system (EHSS), it inherently has the characteristics such as high order nonlinear, strong coupling, and uncertain, therefore, conventional… read more here.
Keywords: electro hydraulic; control; servo system; linear active ... See more keywords
Adaptive robust disturbance compensating control for a servo system in the presence of both friction and deadzone
Sign Up to like & getrecommendations! Published in 2017 at "Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science"
DOI: 10.1177/0954406215616422
Abstract: An adaptive robust control that does not need sophisticated plant modeling work is proposed for precise output positioning of a servo system in the presence of both friction and deadzone nonlinearities. It is difficult to… read more here.
Keywords: friction deadzone; control; servo system; system ... See more keywords
A novel adaptive PD-type iterative learning control of the PMSM servo system with the friction uncertainty in low speeds
Sign Up to like & getrecommendations! Published in 2023 at "PLOS ONE"
DOI: 10.1371/journal.pone.0279253
Abstract: High precision demands in a large number of emerging robotic applications strengthened the role of the modern control laws in the position control of the Permanent Magnet Synchronous Motor (PMSM) servo system. This paper proposes… read more here.
Keywords: low speeds; ilc; control; friction ... See more keywords
Sliding mode control of a servo system in LabVIEW: Comparing different control methods
Sign Up to like & getrecommendations! Published in 2021 at "International Review of Applied Sciences and Engineering"
DOI: 10.1556/1848.2021.00250
Abstract: The main contribution of this paper is to present the efficiency of LabVIEW in simulating and controlling a servo system with conventional methods (PI and PID control), as well as sliding mode control (SMC). The… read more here.
Keywords: sliding mode; system; control; system labview ... See more keywords
A Vision Servo System for Automated Harvest of Sweet Pepper in Korean Greenhouse Environment
Sign Up to like & getrecommendations! Published in 2019 at "Applied Sciences"
DOI: 10.3390/app9122395
Abstract: Recently, farmers of sweet pepper suffer from the increase of its unit production costs due to the rise of labor costs. The rise of unit production costs of sweet pepper, on the other hand, decreases… read more here.
Keywords: system; harvest; sweet pepper; system automated ... See more keywords
Analysis and Verification of Finite Time Servo System Control with PSO Identification for Electric Servo System
Sign Up to like & getrecommendations! Published in 2019 at "Energies"
DOI: 10.3390/en12183578
Abstract: Electric servo system (ESS) is a servo mechanism in a control system of an aircraft, a ship, etc., which controls efficiency and directly affects the energy consumption and the dynamic characteristics of the system. However,… read more here.
Keywords: finite time; system; control; servo system ... See more keywords