Real-Time Force Tracking Control of an Electro-Hydraulic System Using a Novel Robust Adaptive Sliding Mode Controller

Liu, Cheng; Zhu, Zhencai; Shen, Gang; Wang, Shujing; Li, Xiang; Yu, Tang

doi:10.1109/access.2019.2895595

Cited by 23 publications

(13 citation statements)

References 25 publications

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“…Theorem 1 proves the performance recovery described in (10) on the basis of result of Lemma 1. Theorem 1: The web velocity loop driven by the proposed control law (18) with DOB (19)- (20) guarantees the inputto-state stability (ISS) and the inequality: T . ♦ Proof: It follows from the combination of (17) and (18)…”

Section: ) Tension Controlsmentioning

confidence: 98%

See 1 more Smart Citation

Velocity-Sensorless Decentralized Tension Control for Roll-to-Roll Printing Machines

Kim

2020

IEEE Access

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This paper presents a velocity-sensorless decentralized tension control scheme without true machine parameter dependence for roll-to-roll printing machines. Both the nonlinear nature and parameter uncertainties are taken into account the development task. As the first merit, the proposed observer eliminates the requirement of velocity feedback without any plant information even the nominal parameters. The introduction of the active-damping with the estimated state reduces the closed-loop system order to 1 by the pole-zero cancellation using the specified feedback gains. Finally, the disturbance observer (DOB) replaces the regulation error integrators with the closed-loop robustness improvement against the high-frequency disturbances. The MATLAB/Simulink-based simulations validate the effectiveness of the proposed decentralized scheme. INDEX TERMS Roll-to-roll printing machine, decentralized control, observer, pole-zero cancellation.

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Section: ) Tension Controlsmentioning

confidence: 98%

“…See Theorem 2 for details. Theorem 2: The web velocity loop driven by the control law (18) and DOB (19) and 20…”

Section: ) Tension Controlsmentioning

confidence: 99%

Velocity-Sensorless Decentralized Tension Control for Roll-to-Roll Printing Machines

Kim

2020

IEEE Access

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“…Several types of control approaches had been proposed by researchers to control the nonlinear EHA system, such as linear quadratic regulator [6][7][8], PID controller [9][10][11], model predictive controller [12][13][14], backstepping controller [15][16][17], sliding mode controller [18][19][20][21], and other hybrid controllers [22][23][24]. However, the PID controller is still the main choice for industrial applications due to its fast design process, simple structure, and robust control performance [25].…”

Section: Introductionmentioning

confidence: 99%

The Effects of Weightage Values with Two Objective Functions in iPSO for Electro-Hydraulic Actuator System

Chai

Ghazali

Horng

et al. 2021

ARFMTS

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In this paper, the Proportional-Integral-Derivative (PID) controller with improved Particle Swarm Optimization (iPSO) algorithm is proposed for the positioning control of nonlinear Electro-Hydraulic Actuator (EHA) system. PID controller is chosen to control the EHA system due to its popularity in industrial applications. The PID controller parameters will be tuned by using the iPSO algorithm to get the lowest overshoot percentage and steady-state error. The conventional PSO algorithm has only one objective function to get the optimum parameters. However, this is not enough to increase the control performance of the EHA system. Therefore, an improved Particle Swarm Optimization (iPSO) that includes the mean error and overshoot percentage as the two objective functions is proposed in this paper. The most popular method in PSO that included two objective functions is Linear Weight Summation (LWS). In this method, the two objective functions are combined with certain weightage into one equation to give the best control performance. This paper focuses on determining the suitable weightage between these two objective functions so that the EHA system can produce the best control performance with less overshoot and less error. Overshoot percentage and steady-state error are used to indicate the best control performance. The results showed that EHA system can perform better by using suitable weightage between the mean error and overshoot percentage.

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“…Table 1 gives a comparison of the existing techniques specific to hitch control and the current study in terms of their technical attributes. Few applications of latest techniques in hydraulic control can be found in [24]- [27].…”

Section: Introductionmentioning

confidence: 99%

Robust Pitching Disturbance Force Attenuation for Tractor Considering Functional Constraints

2020

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Tractors are attached with function-specific implements with the help of an electro-hydraulic hitch system, to carry out various farm operations. Forces arising during travel with the lifted implement on uneven terrain, generate disturbance forces on the hitch system. In this study, the electro-hydraulic system was controlled such that the disturbance forces are attenuated. A second order transfer function model of the hitch system was obtained using experimental data. In order to account for the nonlinearities in the system, an advanced Sliding Mode Controller with Power Rate Exponential Reaching Law was developed to control the hitch system to attenuate the disturbance forces. Variation in system parameters due to change of implements was taken into account by making the system adaptive using a Recursive Least Squares (RLS) parameter estimator, which was used to estimate and update the system parameters in the controller. Position regulation was incorporated to prevent the implement from reaching its mechanical limits. Valve deadzone and operating input limits were incorporated into this design. Also, considering the presence of two valves to supply fluid to the same cylinder, a trigger logic was developed to suitably choose the valve to be operated. The controller was found to provide an average disturbance force attenuation of 82.9% while being robust to a random variation in each parameter up to ±80%.

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Real-Time Force Tracking Control of an Electro-Hydraulic System Using a Novel Robust Adaptive Sliding Mode Controller

Cited by 23 publications

References 25 publications

Velocity-Sensorless Decentralized Tension Control for Roll-to-Roll Printing Machines

Velocity-Sensorless Decentralized Tension Control for Roll-to-Roll Printing Machines

The Effects of Weightage Values with Two Objective Functions in iPSO for Electro-Hydraulic Actuator System

Robust Pitching Disturbance Force Attenuation for Tractor Considering Functional Constraints

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