Understanding Valve Actuator Diagnostics
نویسنده
چکیده
onstant diagnostic evaluation of electric motor-operated valves (MOVs) has become an important tool for asset management, predictive maintenance programs, troubleshooting, and scheduled periodic maintenance. Predictive functionality allows your maintenance personnel to be proactive in servicing MOVs, while limiting costly failures and unscheduled plant process shutdowns. During scheduled downtime, maintenance personnel are given the information they need to prioritize valve and actuator maintenance to make best use of scarce opportunities.
منابع مشابه
Control Reconfiguration of a Boiler-Turbine Unit After Actuator Faults
Boiler-turbines are one of the most important parts in power generation plants. The safety problem in such systems has always been a special concern. This paper discusses the application of control reconfig uration by fault-hiding approach for a boiler-turbine unit. In Fault-hiding approach, after occurrence of a fault, nominal controller of the system remains unchanged; instead, a reconfigurat...
متن کاملDesign Servo System Type and Positioning of Pole Observer Full Rank a Piezoelectric Servo Valve without Integrator
In this paper, the method of modern control approach for the design of controller and observer is used. Other functions such as neural controllers - or fuzzy sliding mode control can be found in this work and the results are compared. First, a dynamic model of the servo valve is intended for the governing equations in state-space form expression are obtained. Due to the system integrator is exp...
متن کاملDesign and Analysis of an Electromagnetically Driven Valve for a Glaucoma Implant
|Glaucoma is an eye disease which is caused by abnormal high IOP (Intra Ocular Pressure) in the eye. The use of implants is increasing in these days in order to treat the glaucoma. However, though conventional implants have a capability of pressure regulation, they cannot maintain IOPs desired for di erent patients. To solve these problems, it is needed to develop a new implant which is capable...
متن کاملA Custom-desig Ed Limited-a Gle Actuator for a Electromecha Ical E Gi E Valve Drive Part Ii: Fabricatio a D Evaluatio
Research has shown that variable valve timing (VVT) can improve significantly the performance of internal combustion (IC) engines, including higher fuel efficiencies, lower emissions, and larger torque outputs at each point of the engine map. To achieve independent and continuous VVT for each valve, an electromechanical valve drive (EMV) system with a custom-designed limited-angle actuator was ...
متن کاملSelf-powered switch-controlled nucleic acid extraction system.
Over the past few decades, lab-on-a-chip (LOC) technologies have played a great role in revolutionizing the way in vitro medical diagnostics are conducted and transforming bulky and expensive laboratory instruments and labour-intensive tests into easy to use, cost-effective miniaturized systems with faster analysis time, which can be used for near-patient or point-of-care (POC) tests. Fluidic p...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره شماره
صفحات -
تاریخ انتشار 2010