Self-Aligning Limited-Angle Rotary Torque PM Motor for Control Valve: Design and Experimental Verification

2020 ◽  
Vol 30 (4) ◽  
pp. 1-5
Author(s):  
Gang-Hyeon Jang ◽  
Sung-Won Seo ◽  
Chang-Woo Kim ◽  
Ick-Jae Yoon ◽  
Jang-Young Choi
Keyword(s):  
Experimental Verification ◽  
Control Valve ◽  
Valve Design ◽  
Limited Angle

scholarly journals Hydraulic Valve for Miniature Surgical Robot Applications

2017 ◽  
Author(s):  
Devin R. Berg ◽  
Perry Y. Li
Keyword(s):  
Experimental Testing ◽  
Control Valve ◽  
Hydraulic Control ◽  
Valve Design ◽  
Minimally Invasive Surgical ◽  
Advanced Robotics ◽  
Design Options ◽  
Design And Testing ◽  
Hydraulic Valve ◽  
Selection Of

This paper describes the design and testing of a novel hydraulic control valve for use in the minimally invasive surgical robotic manipulator. The use of hydraulics for surgical robotics opens new possibilities for miniaturization and robustness. However, to enable this, there exists a need for hydraulic components which bridge the size gap between traditional fluidics and microfluidics. This paper provides motivation for the development of a miniature hydraulic valve designed specifically to enable a serpentine style hydraulic surgical manipulator. Included are a description of the various considerations relevant to the valve and its specific application, such as the method of manipulation for the valve, as well as a theoretical valve design and a mathematical description of the operating principles. Two possible methods of valve activation, piezoelectric and electromagnetic, are discussed along with two physical realizations of the valve design are presented which demonstrate the theoretical design. Finally, the results of experimental testing performed on valve prototypes is described to evaluate the design options and help inform the selection of the final configuration.This is a preprint of an article submitted for consideration in ADVANCED ROBOTICS, copyright Taylor & Francis and Robotics Society of Japan; ADVANCED ROBOTICS is available online at http://www.tandfonline.com/tadr.

Hydraulic-feedback proportional valve design for construction machinery

2015 ◽  
Vol 229 (17) ◽  
pp. 3162-3178 ◽  
Author(s):  
Wei Liu ◽  
Jianhua Wei ◽  
Jinhui Fang ◽  
Shizhen Li
Keyword(s):  
Control Valve ◽  
Response Speed ◽  
Optimal Parameters ◽  
Valve Design ◽  
Proportional Valve ◽  
Construction Machinery ◽  
Flow Capacity ◽  
Locus Method ◽  
Increasing Demand ◽  
Large Flow

Due to the increasing demand for large-tonnage construction machinery, the manufacturers call for a reliable and inexpensive proportional control valve with large flow capacity. In this work, a novel throttle poppet valve based on hydraulic-feedback principle has been studied comprehensively and optimized to meet the requirements of the construction machinery. A detailed and precise mathematical model has been developed and validated through experiments. According to the model, basic status of the valve under different working conditions has been analyzed, and the impacts of the parameters on the performances of response speed and the pressure stiffness have been studied through the root locus method. To find the optimal parameters suitable for construction machinery, an optimization based on non-dominated sorting genetic algorithm II was carried out, and the performances have been significantly improved. Finally, by adopting the analysis on the parameters and the optimization results, guidelines for designing the hydraulic-feedback proportional valve in various sizes are presented.

Pressure is nothing without control: Evolution of control valve design

2012 ◽  
pp. 115-128 ◽  
Author(s):  
C.S. Hardy ◽  
C.M. Hudson ◽  
M.S. Harper ◽  
D.M. Ainsworth
Keyword(s):  
Control Valve ◽  
Valve Design

Integration with QFDs, TRIZ and FMEA for Control Valve Design

2014 ◽  
Vol 1021 ◽  
pp. 167-180 ◽  
Author(s):  
Chang Ming Hu ◽  
Chin An Lin ◽  
Chin Hsin Chang ◽  
Yeuan Jong Cheng ◽  
Po Yi Tseng
Keyword(s):  
Control Valve ◽  
Customer Requirements ◽  
Valve Design ◽  
Design Quality ◽  
Development Stages ◽  
Technical Requirements ◽  
Front End ◽  
Proposed Model ◽  
Precise Analysis ◽  
Innovative Model

This paper proposes how QFDs, TRIZ integration with FMEA may arise, and making the control valve in the design concept and manufacturing development stages to amend the main issues to have front-end prevention. In order to eliminate the conflicting requirements and to build the front-end prevention of the design and production process that will meet customer needs and translate customer requirements into measurable technical requirements, the innovative model integrating three tools is proposed. One case is given to illustrate the research steps for the proposed model that will demonstrate the design quality and achievable resource benefits when these three tools provide product developers with more useful information and precise analysis results.

Dynamic Modelling of a Gas Pressure Regulator for Low Pressure Service

1978 ◽  
Vol 11 (4) ◽  
pp. 147-153 ◽  
Author(s):  
M. L. Tatnall ◽  
A. Redpath
Keyword(s):  
Mathematical Model ◽  
Simulation Model ◽  
Transient Response ◽  
Dynamic Modelling ◽  
Control Valve ◽  
Simulation Models ◽  
Gas Pressure ◽  
Valve Design ◽  
Pressure Regulator ◽  
Simple Simulation

This paper concerns the development of a mathematical model for use both in predicting system behaviour and in control valve design. The first model considered includes several parameters whose values may only be found by experimentation, whilst the second model may be synthesised using only readily available data. The response of each of the simulation models is compared to experimentally obtained results obtained from a 2 in regulator and the effects of parametric variations are considered. It is shown that the transient response of this type of valve may be modelled by the use of the reasonably simple simulation model described.

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