scholarly journals The Redundant Omega Clutch: A Marine Propulsion Clutch for Turbines

1976 ◽  
Author(s):  
G. Aschauer
Keyword(s):  
Control System ◽  
Heat Energy ◽  
Performance Characteristics ◽  
Output Shaft ◽  
Operation Performance ◽  
Clutch Engagement ◽  
Marine Propulsion

The Redundant Omega Clutch is an output shaft-driven centrifugal clutch with an inbuilt hydraulic governor. The clutch is designed with a backup engaging system that provides two separated engaging systems to assure clutch plate clamp. Centrifugal thrust in the engaging cylinders alone is sufficient to maintain clutch engagement for a period of time in the unlikely event of loss of clutch apply pressure from both systems. The clutch has capability to maintain a selected output speed independent of input speed variations and to accept continuous slip heat energy. This paper deals with the design of the clutch and its control system, the principles of operation, performance characteristics, and testing results.

scholarly journals Smooth Gear Shift Control System of Automatic Transmission Using Estimated Output Shaft Torque.

1995 ◽  
Vol 61 (591) ◽  
pp. 4334-4338
Author(s):  
Toshimichi Minowa ◽  
Hiroshi Kimura ◽  
Junichi Ishii ◽  
Masahiko Ibamoto
Keyword(s):  
Control System ◽  
Automatic Transmission ◽  
Output Shaft ◽  
Gear Shift ◽  
Shift Control ◽  
Shaft Torque

scholarly journals Investigation of the possibility of regulation and automatic optimization of the control system of a chamber grain dryer

2021 ◽  
Vol 4 (46) ◽  
pp. 6-6
Author(s):  
Alexander Saakian ◽  
◽  
Keyword(s):  
Control System ◽  
Automatic Control ◽  
Energy Saving ◽  
Automatic Control System ◽  
Frequency Converter ◽  
Heat Energy ◽  
Convective Drying ◽  
Control Temperature ◽  
Temperature Controller ◽  
Automatic Optimization

The regulation of the coolant speed during convective drying in a stationary grain layer allows the maximum use of the amount of heat energy for drying the material. The paper presents the results of a study of the regulation of the coolant speed on an experimental drying plant for use in the automatic control system of a chamber grain dryer. The article also discusses the issues of energy saving efficiency in drying chambers. The possibility of automatic control of the main parameters control system using a microcontroller is analyzed. Keywords: DRYING MODES, DRYING ZONE, AUTOMATIC CONTROL, TEMPERATURE CONTROLLER, FAN, OPTIMIZATION, MICROCONTROLLER, FREQUENCY CONVERTER

Gas Turbine Control System Integration for Royal Caribbean Millennium Class Cruise Liner

2000 ◽  
Author(s):  
David J. Olsheski ◽  
William W. Schulke
Keyword(s):  
Control System ◽  
Steam Turbine ◽  
Gas Turbine ◽  
Waste Heat ◽  
Combined Cycle ◽  
Direct Drive ◽  
Dynamic Features ◽  
Turbine Generator ◽  
Marine Propulsion ◽  
Prime Movers

Traditionally commercial marine propulsion needs have been met with direct drive reciprocating prime movers. In order to increase efficiency, simplify installation and maintenance accessibility, and increase cargo / passenger capacity; indirect electric drive gas and steam turbine combined cycle prime movers are being introduced to marine propulsion systems. One such application is the Royal Caribbean Cruise Line (RCCL) Millennium Class ship. This commercial vessel has two aero-derivative gas turbine generator sets with a single waste heat recovery steam turbine generator set. Each is controlled by independent microprocessor based digital control systems. This paper addresses only the gas turbine control system architecture and the unique safety and dynamic features that are integrated into the control system for this application.

The Power Plant Boiler Automatic Control Based on PLC

2012 ◽  
Vol 235 ◽  
pp. 176-180 ◽  
Author(s):  
Yao Yuan Zhang ◽  
Zi Sheng Zhang ◽  
Jie Yu ◽  
Wei Guo ◽  
Zhi Qing Liu
Keyword(s):  
Control System ◽  
Power Plant ◽  
Automatic Control ◽  
Heat Energy ◽  
Total Power ◽  
Time Data ◽  
Input And Output ◽  
Communication Program ◽  
Power Plant Boiler ◽  
Plant Boiler

The power plant boiler automatic control system is designed on the basis of Siemens S7-200 in this paper. Based on the introduction of the Siemens S7-200 and the works of the boiler, the total power plant boiler control system is designed in details. Besides the initialized program is designed based on the input and output address of all the switches. The communication program is achieved, including the initialization of the program running parameters, the call of the system subroutine, the calculation of the checksum, the real-time data receiving process, etc. Finally, the heat energy is successfully and automaticly converted to the electricity in the boiler based on the PLC.

scholarly journals Urban Traffic Signal System Control Structural Optimization Based on Network Analysis

2013 ◽  
Vol 2013 ◽  
pp. 1-9 ◽  
Author(s):  
Li Wang ◽  
Xiao-ming Liu ◽  
Zhi-jian Wang ◽  
Zheng-xi Li
Keyword(s):  
Control System ◽  
Network Analysis ◽  
Traffic Control ◽  
Traffic Signal ◽  
Urban Traffic ◽  
Analysis Approach ◽  
System Control ◽  
Traffic Network ◽  
Operation Performance ◽  
Traffic Control System

Advanced urban traffic signal control systems such as SCOOT and SCATS normally coordinate traffic network using multilevel hierarchical control mechanism. In this mechanism, several key intersections will be selected from traffic signal network and the network will be divided into different control subareas. Traditionally, key intersection selection and control subareas division are executed according to dynamic traffic counts and link length between intersections, which largely rely on traffic engineers’ experience. However, it omits important inherent characteristics of traffic network topology. In this paper, we will apply network analysis approach into these two aspects for traffic system control structure optimization. Firstly, the modified C-means clustering algorithm will be proposed to assess the importance of intersections in traffic network and furthermore determine the key intersections based on three indexes instead of merely on traffic counts in traditional methods. Secondly, the improved network community discovery method will be used to give more reasonable evidence in traffic control subarea division. Finally, to test the effectiveness of network analysis approach, a hardware-in-loop simulation environment composed of regional traffic control system, microsimulation software and signal controller hardware, will be built. Both traditional method and proposed approach will be implemented on simulation test bed to evaluate traffic operation performance indexes, for example, travel time, stop times, delay and average vehicle speed. Simulation results show that the proposed network analysis approach can improve the traffic control system operation performance effectively.

Lift Engine Bleed Flow Management for a V/STOL Fighter Reaction Control System

1973 ◽  
Author(s):  
C. N. Webster
Keyword(s):  
Control System ◽  
Performance Characteristics ◽  
Flow Management ◽  
Yaw Control ◽  
Control Power ◽  
Aerodynamic Control ◽  
Management Concept ◽  
Control Surfaces ◽  
Selection Of ◽  
Reaction Control System

In a lift-plus-lift/cruise V/STOL fighter, reaction control may be used to provide pitch, roll and yaw control power during hover and low speed flight when aerodynamic control surfaces are ineffective. This power is provided by reaction jets in the pitch, roll and yaw axes. Reaction thrust is derived from lift engine bleed air. This paper discusses the trade studies leading to the selection of a reaction control system arrangement and a bleed air management concept. The selected system, its performance characteristics, and flow management are discussed.

scholarly journals Stand-by Sequence Control System for Marine Propulsion Plant

1990 ◽  
Vol 25 (1) ◽  
pp. 38-50
Author(s):  
Yasunari Kawamoto ◽  
Tsutomu Hata ◽  
Yoshihiro Fujita ◽  
Takashi Nakamura
Keyword(s):  
Control System ◽  
Marine Propulsion
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