scholarly journals Rotation Control of Air Turbine Spindle using High Precision, Quick Response Pneumatic Pressure Regulator

2014 ◽  
Vol 45 (1) ◽  
pp. 8-14
Author(s):  
Tomonori KATO ◽  
Genki HIGASHIJIMA ◽  
Takanori YAZAWA ◽  
Tatsuki OTUBO ◽  
Yusuke NOZAKI ◽  
...  
Keyword(s):  
High Precision ◽  
Quick Response ◽  
Pressure Regulator ◽  
Pneumatic Pressure ◽  
Air Turbine

scholarly journals Rotation Control of Air Turbine Spindle using High Precision, Quick Response Pneumatic Pressure Regulator

2014 ◽  
Vol 7 (1) ◽  
pp. 9-15 ◽  
Author(s):  
Tomonori KATO ◽  
Genki HIGASHIJIMA ◽  
Takanori YAZAWA ◽  
Tatsuki OTUBO ◽  
Yusuke NOZAKI ◽  
...  
Keyword(s):  
High Precision ◽  
Quick Response ◽  
Pressure Regulator ◽  
Pneumatic Pressure ◽  
Air Turbine

A new, high precision, quick response pressure regulator for active control of pneumatic vibration isolation tables

2010 ◽  
Vol 34 (1) ◽  
pp. 43-48 ◽  
Author(s):  
Tomonori Kato ◽  
Kenji Kawashima ◽  
Tatsuya Funaki ◽  
Kotaro Tadano ◽  
Toshiharu Kagawa
Keyword(s):  
Active Control ◽  
High Precision ◽  
Vibration Isolation ◽  
Quick Response ◽  
Pressure Regulator ◽  
Response Pressure

Study on the Characteristics of a New Type Pneumatic Pressure Regulator

2013 ◽  
Vol 347-350 ◽  
pp. 157-161
Author(s):  
Jun Gong Ma ◽  
Xin Hua Chen
Keyword(s):  
Mechanical Valve ◽  
Pressure Control ◽  
Superior Performance ◽  
Mechanical Pressure ◽  
Pressure Regulator ◽  
Valve Body ◽  
Pneumatic Pressure ◽  
Output Pressure ◽  
Flow Disturbances ◽  
Downstream Flow

ressure regulators are very important elements in pneumatic systems. Purely mechanical pressure regulators are commonly used to control the supply pressure to the desired value. The intelligent pneumatic pressure regulator (IPPR) is designed as the demands of pressure control precision increase. Its prominent advantage is the ability to achieve accurate output pressure, remote control and centralized management. In this paper, the IPPR consists of a mechanical valve body, a stepping motor, a microcontroller, a pressure sensor. Herein, its pneumatic characteristics were analyzed, and the pressure control algorithm was presented. The superior performance of IPPR was shown in AMEsim simulation, especially in terms of avoiding affects from upstream pressure and downstream flow disturbances.

Digital Simulation of a Pneumatic Pressure Regulator

SIMULATION ◽  
1994 ◽  
Vol 63 (4) ◽  
pp. 252-266 ◽  
Author(s):  
David J. Kukulka ◽  
A. Benzoni ◽  
J.C. Mollendorf
Keyword(s):  
Digital Simulation ◽  
Pressure Regulator ◽  
Pneumatic Pressure

scholarly journals A Mechanical Start System for U. S. Navy Destroyer Generator Sets

1997 ◽  
Author(s):  
Leonard L. Overton ◽  
William E. Masincup ◽  
Jack E. Halsey
Keyword(s):  
High Pressure ◽  
Pressure Regulator ◽  
Ship Construction ◽  
Turbine Generators ◽  
Air Turbine ◽  
Turboshaft Engine ◽  
Generator Sets ◽  
Naval Surface Warfare ◽  
The U.S ◽  
Reliability And Availability

A mechanical start system has been developed to start the Ship’s Service Gas Turbine Generators (SSGTG) on board U.S. naval destroyers. The current starting system uses either stored high pressure air or bleed air from another running turbine. The U.S. Navy has reviewed the high pressure air system and found it to be a costly system for both ship construction and maintenance. As a result, the Navy is requiring an alternative starting method that will replace high pressure air. It should be noted that any alternative that introduces compressed air to start the SSGTG depends on the start air regulating assembly and the pneumatic starter. The Redundant Independent Mechanical Start System (RIMSS) consists of an Allison Model 250 turboshaft engine mounted above the SSGTG main reduction gearbox. The turboshaft power take off is connected to the pinion shaft of the reduction gearbox by means of a parallel shaft auxiliary transfer gearbox. The transfer gearbox connection to the reduction gearbox replaces the pneumatic starter adapter pad but provides a means to also connect the pneumatic starter. As a result, the pinion shaft can be driven either pneumatically by the air turbine or mechanically by the Model 250 engine. This provides an alternative starting mode which is totally independent of the present means of starting. This will increase the reliability and availability of the SSGTG since it can still be started even if the pressure regulator or the pneumatic starter is not functional. This system has undergone testing at the Naval Surface Warfare Center Carderock Division facility in Philadelphia.

Measurement of Radial and Axial Error Motion in a High Precision Spindle

2011 ◽  
Vol 381 ◽  
pp. 34-37
Author(s):  
Xi Zhang ◽  
Sheng Bao ◽  
Fang Cheng
Keyword(s):  
High Precision ◽  
Rotation Speed ◽  
Angular Position ◽  
Precision Machining ◽  
Machining Accuracy ◽  
Data Sampling ◽  
Aerostatic Bearing ◽  
Displacement Sensors ◽  
Air Turbine ◽  
Error Motion

The performance of a spindle is critical for high precision machining. In this paper, the spindle error motion in a high precision milling center was measured. The spindle is driven by air turbine with rotation speed of 120,000rpm. The radial and axial error motion of the axis of rotation was measured. The capacitive displacement sensors with nanometer resolution were mounted against the master gauge pin through the dedicated setup. Tlusty method was adopted to synchronize angular position of the spindle and data sampling. The measured radial and axial error motion of the spindle were 2.73μm and 2.59μm respectively. Despite of motion errors, the better machining accuracy still can be achieved. It seems that cutting force may improve the rotation performance of a spindle with aerostatic bearing.

The Study of Fine Tungsten Rhenium Thermocouple Wires in the Temperature Measurement of the Molten Steel

2013 ◽  
Vol 873 ◽  
pp. 77-81 ◽  
Author(s):  
Hao Yang ◽  
De Mao Chen ◽  
Qi Liu ◽  
Xue Jun Xin ◽  
Xin Wei Bo ◽  
...  
Keyword(s):  
Temperature Measurement ◽  
High Precision ◽  
Molten Steel ◽  
Applied Research ◽  
Product Yield ◽  
Measurement Precision ◽  
Quick Response ◽  
Fabrication Technology ◽  
Fine Tungsten ◽  
Thermocouple Probe

In this paper, the producing methods of high precision Fine Tungsten-Rhenium Thermocouple wires and its applied research in the temperature measurement of the molten steel are introduced, The effects of Fine W-Re Thermocouple Wires on the fabrication technology, the temperature measurement precision and stability of the Quick Response Tungsten-Rhenium Thermocouple probe are discussed. The results show that the temperature measurement precision and stability of φ0.05mm Fine W-Re Thermocouple wires reach that of Type S thermocouple wires. The crack of W-Re Thermocouple wires can be avoided and the length of thermocouple wires can be cut more shorter in the process of manufacturing the Quick Response W-Re Thermocouple probe with φ0.05mm Fine W-Re Thermocouple Wires, so that the product yield and efficiency can be advanced.

Research on reliability test circuit of pneumatic pressure regulator

2006 ◽  
Author(s):  
Jungong Ma ◽  
Haitao Wang ◽  
Naotake Oneyama ◽  
Mitsuru Senoo ◽  
Huping Zhang
Keyword(s):  
Reliability Test ◽  
Pressure Regulator ◽  
Pneumatic Pressure ◽  
Test Circuit
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