A mechatronic design synthesis for very low flow control valves

Remi C. Zante, EPSRC (Funder), Scottoiler Ltd (Funder)

Research output: ThesisDoctoral Thesis

Abstract

The means by which the control of very low flows in the region of 0.1-400ml/hr using valves with microchannels (<250μm) is not well defined. This work presents a review of existing literature that contributes to the understanding of controlling very low flows. Mechatronic principles are used to bring new understanding to the field of very low flow control using needle valves. Flow rate experiments were conducted using a mechatronically controlled needle valve and a novel flow measurement device constructed for the purpose, from which an analytical flow model is developed. Details of a linear actuated needle valve are given along with open loop and closed loop control systems developed for the purpose of accurately controlling very low flows. The open loop system is derived from the valve operating principles enabling an efficient method of modelling the valve flow characteristics for the purpose of control. The closed loop method, incorporating gain scheduling is capable of controlling flows to within 0.0016ml/hr at low flows. A prototype lubricant dispensing system using a low flow needle valve was tested in an industrial environment. A design synthesis is developed by consolidating the knowledge gained from these studies is presented. This discusses the all main factors affecting the design and operation of needle valves for the control of very low flows while describing practical solutions to the problems commonly encountered.
LanguageEnglish
Awarding Institution
  • University Of Strathclyde
Publication statusPublished - Jun 2008

Fingerprint

Mechatronics
Flow control
Needles
Closed loop control systems
Flow measurement
Microchannels
Lubricants
Scheduling
Flow rate
Experiments

Keywords

  • mechatronic
  • low flow
  • valve
  • design
  • control

Cite this

Zante, R. C., EPSRC (Funder), & Scottoiler Ltd (Funder) (2008). A mechatronic design synthesis for very low flow control valves.
Zante, Remi C. ; EPSRC (Funder) ; Scottoiler Ltd (Funder). / A mechatronic design synthesis for very low flow control valves. 2008. 276 p.
@phdthesis{63f19f4c1a1e4381afaa38056e5dbed6,
title = "A mechatronic design synthesis for very low flow control valves",
abstract = "The means by which the control of very low flows in the region of 0.1-400ml/hr using valves with microchannels (<250μm) is not well defined. This work presents a review of existing literature that contributes to the understanding of controlling very low flows. Mechatronic principles are used to bring new understanding to the field of very low flow control using needle valves. Flow rate experiments were conducted using a mechatronically controlled needle valve and a novel flow measurement device constructed for the purpose, from which an analytical flow model is developed. Details of a linear actuated needle valve are given along with open loop and closed loop control systems developed for the purpose of accurately controlling very low flows. The open loop system is derived from the valve operating principles enabling an efficient method of modelling the valve flow characteristics for the purpose of control. The closed loop method, incorporating gain scheduling is capable of controlling flows to within 0.0016ml/hr at low flows. A prototype lubricant dispensing system using a low flow needle valve was tested in an industrial environment. A design synthesis is developed by consolidating the knowledge gained from these studies is presented. This discusses the all main factors affecting the design and operation of needle valves for the control of very low flows while describing practical solutions to the problems commonly encountered.",
keywords = "mechatronic, low flow, valve, design, control",
author = "Zante, {Remi C.} and {EPSRC (Funder)} and {Scottoiler Ltd (Funder)}",
year = "2008",
month = "6",
language = "English",
school = "University Of Strathclyde",

}

Zante, RC, EPSRC (Funder) & Scottoiler Ltd (Funder) 2008, 'A mechatronic design synthesis for very low flow control valves', University Of Strathclyde.

A mechatronic design synthesis for very low flow control valves. / Zante, Remi C.; EPSRC (Funder); Scottoiler Ltd (Funder).

2008. 276 p.

Research output: ThesisDoctoral Thesis

TY - THES

T1 - A mechatronic design synthesis for very low flow control valves

AU - Zante, Remi C.

AU - EPSRC (Funder)

AU - Scottoiler Ltd (Funder)

PY - 2008/6

Y1 - 2008/6

N2 - The means by which the control of very low flows in the region of 0.1-400ml/hr using valves with microchannels (<250μm) is not well defined. This work presents a review of existing literature that contributes to the understanding of controlling very low flows. Mechatronic principles are used to bring new understanding to the field of very low flow control using needle valves. Flow rate experiments were conducted using a mechatronically controlled needle valve and a novel flow measurement device constructed for the purpose, from which an analytical flow model is developed. Details of a linear actuated needle valve are given along with open loop and closed loop control systems developed for the purpose of accurately controlling very low flows. The open loop system is derived from the valve operating principles enabling an efficient method of modelling the valve flow characteristics for the purpose of control. The closed loop method, incorporating gain scheduling is capable of controlling flows to within 0.0016ml/hr at low flows. A prototype lubricant dispensing system using a low flow needle valve was tested in an industrial environment. A design synthesis is developed by consolidating the knowledge gained from these studies is presented. This discusses the all main factors affecting the design and operation of needle valves for the control of very low flows while describing practical solutions to the problems commonly encountered.

AB - The means by which the control of very low flows in the region of 0.1-400ml/hr using valves with microchannels (<250μm) is not well defined. This work presents a review of existing literature that contributes to the understanding of controlling very low flows. Mechatronic principles are used to bring new understanding to the field of very low flow control using needle valves. Flow rate experiments were conducted using a mechatronically controlled needle valve and a novel flow measurement device constructed for the purpose, from which an analytical flow model is developed. Details of a linear actuated needle valve are given along with open loop and closed loop control systems developed for the purpose of accurately controlling very low flows. The open loop system is derived from the valve operating principles enabling an efficient method of modelling the valve flow characteristics for the purpose of control. The closed loop method, incorporating gain scheduling is capable of controlling flows to within 0.0016ml/hr at low flows. A prototype lubricant dispensing system using a low flow needle valve was tested in an industrial environment. A design synthesis is developed by consolidating the knowledge gained from these studies is presented. This discusses the all main factors affecting the design and operation of needle valves for the control of very low flows while describing practical solutions to the problems commonly encountered.

KW - mechatronic

KW - low flow

KW - valve

KW - design

KW - control

M3 - Doctoral Thesis

ER -

Zante RC, EPSRC (Funder), Scottoiler Ltd (Funder). A mechatronic design synthesis for very low flow control valves. 2008. 276 p.