Friction characteristics and servo control of a linear peristaltic actuator

Almeida, Fernando Gomes de

doi:10.1007/s00170-018-1678-6

Cited by 7 publications

(8 citation statements)

References 19 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Among the recent developed actuation systems, peristaltic linear pneumatic actuators (PLPA) have been reported to be a simple, accurate and cost-efficient alternative to other actuators [7][8][9][10].…”

Section: Introductionmentioning

confidence: 99%

Additive Manufacturing of Flexible Material for Pneumatic Actuators Application

et al. 2021

Self Cite

View full text Add to dashboard Cite

In this paper, endurance of peristaltic linear pneumatic actuators was studied using different hose geometries. Towards this goal, different hose geometries were additively manufactured using Fused Layer Manufacturing techniques of Thermoplastic Polyurethane Elastomer. Material properties of the elastomer were studied using Differential Scanning Calorimetry and the tensile test. The relations between the sample’s print temperature and build direction on the actuator endurance were investigated. Lastly, the relation between the geometry design of the PLPA actuator and its endurance is also discussed. Based on this methodology, authors present results showing that the use of a customized shaped hose with geometrical reinforcement at sides leads to a considerable rise in the hose endurance, when compared with the conventional circular design.

show abstract

Section: Introductionmentioning

confidence: 99%

Additive Manufacturing of Flexible Material for Pneumatic Actuators Application

et al. 2021

Self Cite

View full text Add to dashboard Cite

show abstract

“…However, the friction is actually existent in the experiment even with an anti-stiction cylinder. The integral action of the conventional PID controller and the friction lead to the limit cycles together [30]. Additionally, the traditional PID controller with standard PWM method uses only 3 switching modes (mode M 1 , M 4 , and M 7 ) in the control process.…”

Section: Resultsmentioning

confidence: 99%

“…Considering Eq. 21, (30), (31), and (32), lim s→0 ṡs ≤ 0 is achieved. So lim s→0 +ṡ ≤ 0 and lim s→0 −ṡ ≥ 0 are all satisfied.…”

Section: Sliding Mode Controller Designmentioning

confidence: 89%

Electro-pneumatic position tracking control system based on an intelligent phase-change PWM strategy

Lin

Zhang

Xie

et al. 2018

J Braz. Soc. Mech. Sci. Eng.

View full text Add to dashboard Cite

This paper presents an intelligent phase-change PWM strategy for a position tracking system which includes four solenoid on-off valves and a double-acting double-rod-end cylinder. The proposed technique is designed to minimize the tracking errors and improve the position tracking performance. For an electro-pneumatic system with four valves, only seven switching modes are considered valid. We initially set two switching modes in a pulse width modulation (PWM) period, and this method can also be regarded as a PWM method with changeable phases. In the complete strategy, the operating mode of the system will be selected according to the pressure state and the sliding function. All the switching modes are applied properly in the strategy. A sliding mode controller is designed to utilize the phase-change PWM strategy, and stability of the system is proved. The performance of the proposed strategy is experimentally verified on a field programmable gate array platform. All simulations and experiments verify the effectiveness of the proposed scheme.

show abstract

“…Torque feedback control involves installing a sensor of the measured motor output on the coupling shaft and forming a loop through feedback to achieve control. To overcome this problem, Carneiro and de Almeida [67] explored the use of a pneumatic actuation solution, that is, the pneumatic linear peristaltic actuator (PLPA). Experiments showed that, contrary to what happens with low-friction actuators, the use of integral action does not limit cycles.…”

Section: Mechanical Structurementioning

confidence: 99%

A Review of Key Technologies for Friction Nonlinearity in an Electro-Hydraulic Servo System

et al. 2022

View full text Add to dashboard Cite

In a high-precision servo system, the nonlinear friction link is the key factor affecting the system performance. Reasonable solving of the friction link in servo systems has become a focus of current research. This paper summarizes the friction nonlinearity that affects the control performance of servo systems. First, the characteristics of friction are summarized, and the advantages and disadvantages of typical friction models in recent years are analyzed. Subsequently, existing friction model parameter identification methods are introduced and evaluated. On this basis, the development level of the friction nonlinear control strategy is analyzed from three aspects: friction model-based control, friction model-free control, and compound control. Finally, the objective advantages and disadvantages of the existing technology are summarized, and the future development direction of the friction model and selection reference for the nonlinear friction control strategy are comprehensively discussed.

show abstract

Friction characteristics and servo control of a linear peristaltic actuator

Cited by 7 publications

References 19 publications

Additive Manufacturing of Flexible Material for Pneumatic Actuators Application

Additive Manufacturing of Flexible Material for Pneumatic Actuators Application

Electro-pneumatic position tracking control system based on an intelligent phase-change PWM strategy

A Review of Key Technologies for Friction Nonlinearity in an Electro-Hydraulic Servo System

Contact Info

Product

Resources

About