Liverpool to Ashfield Pipeline – An Innovative, User Friendly Control System For Energy Savings And Odor Control

2011 ◽  
Vol 2011 (5) ◽  
pp. 423-435
Author(s):  
Rory Waddell
Keyword(s):  
Control System ◽  
Energy Savings ◽  
Odor Control ◽  
User Friendly

Energy savings potential of new aeration system: Full scale trials

2012 ◽  
Vol 7 (4) ◽  
Author(s):  
A. Lazić ◽  
V. Larsson ◽  
Å. Nordenborg
Keyword(s):  
Control System ◽  
Energy Consumption ◽  
Total Energy ◽  
Energy Savings ◽  
Treatment Plant ◽  
Full Scale ◽  
Total Energy Consumption ◽  
Aeration System ◽  
Fine Bubble ◽  
Aeration Control

The objective of this work is to decrease energy consumption of the aeration system at a mid-size conventional wastewater treatment plant in the south of Sweden where aeration consumes 44% of the total energy consumption of the plant. By designing an energy optimised aeration system (with aeration grids, blowers, controlling valves) and then operating it with a new aeration control system (dissolved oxygen cascade control and most open valve logic) one can save energy. The concept has been tested in full scale by comparing two treatment lines: a reference line (consisting of old fine bubble tube diffusers, old lobe blowers, simple DO control) with a test line (consisting of new Sanitaire Silver Series Low Pressure fine bubble diffusers, a new screw blower and the Flygt aeration control system). Energy savings with the new aeration system measured as Aeration Efficiency was 65%. Furthermore, 13% of the total energy consumption of the whole plant, or 21 000 €/year, could be saved when the tested line was operated with the new aeration system.

Steps Leading to an Effective Retrofit Odor Control System

2015 ◽  
Vol 2015 (16) ◽  
pp. 4351-4365
Author(s):  
Richard J Pope ◽  
Thomas J Lauro
Keyword(s):  
Control System ◽  
Odor Control

Energy consumption optimization for AC drives position control

2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Branislav Ftorek ◽  
Milan Saga ◽  
Pavol Orsansky ◽  
Jan Vittek ◽  
Peter Butko
Keyword(s):  
Control System ◽  
Energy Saving ◽  
Energy Savings ◽  
Position Control ◽  
Control Strategies ◽  
Content Type ◽  
Ac Drives ◽  
Energy Demands ◽  
Wide Range ◽  
Energy Consumption Optimization

Purpose The main purpose of this paper is to evaluate the two energy saving position control strategies for AC drives valid for a wide range of boundary conditions including an analysis of their energy expenses. Design/methodology/approach For energy demands analysis, the optimal energy control based on mechanical and electrical losses minimization is compared with the near-optimal one based on symmetrical trapezoidal speed profile. Both control strategies respect prescribed maneuver time and define acceleration profile for preplanned rest-to-rest maneuver. Findings Presented simulations confirm lower total energy expenditures of energy optimal control if compared with near-optimal one, but the differences are only small due to the fact that two energy saving strategies are compared. Research limitations/implications Developed overall control system consisting of energy saving profile generator, pre-compensator and position control system respecting principles of field-oriented control is capable to track precomputed state variables precisely. Practical implications Energy demands of both control strategies are verified and compared to simulations and preliminary experiments. The possibilities of energy savings were confirmed for both control strategies. Originality/value Experimental verification of designed control structure is sufficiently promising and confirmed assumed energy savings.

5308589 Odor control system

1995 ◽  
Vol 21 (3) ◽  
pp. IX
Author(s):  
Shui-Chow Yung
Keyword(s):  
Control System ◽  
Odor Control

Development of Gait Training System Powered by Antagonistic Mono-and Bi-Articular Actuators Using Contraction Model Control Scheme

2013 ◽  
Vol 393 ◽  
pp. 525-531 ◽  
Author(s):  
Mohd Azuwan Mat Dzahir ◽  
Tatsuya Nobutomo ◽  
Shin Ichiroh Yamamoto
Keyword(s):  
Control System ◽  
Cycle Time ◽  
Muscle Activation ◽  
Gait Cycle ◽  
Gait Training ◽  
Training System ◽  
Time Shift ◽  
Control Scheme ◽  
Model Control ◽  
User Friendly

The use of Pneumatic Muscle Actuator (PMA) in medical robots for rehabilitation has changed due to the requirements for a compliant, light weight and user-friendly robotic system. In this paper, a control system for controlling the bi-articular actuators (PMA) is proposed. Based on the information obtained from the positional input data (hip and knee joint angles), a contraction model is derived using mathematical equations to determine the contraction patterns of antagonistic mono-and bi-articular actuators, and then implemented it into the control system. Anterior and posterior muscle activation levels are introduced into the model to manipulate its magnitude. There are two tests for the control system; first is with antagonistic mono-articular actuators alone; second is along with antagonistic bi-articular actuators. The contraction model control scheme was tested on a healthy subject in a robot assisted walk test, and satisfactory performance was obtained. The result showed that, the cycle time of the gait training system is improved up to 3 seconds gait cycle compared to 5 seconds gait cycle used in previous research. However, a little time shift and inertia occurred when the controller is tested at faster gait cycle time of 2 seconds and 1 second. Thus, the potential field and iterative learning control are suggested to improve the gait cycle of the system.

Full-scale validation of an air scour control system for energy savings in membrane bioreactors

2015 ◽  
Vol 79 ◽  
pp. 1-9 ◽  
Author(s):  
Hèctor Monclús ◽  
Montserrat Dalmau ◽  
Sara Gabarrón ◽  
Giuliana Ferrero ◽  
Ignasi Rodríguez-Roda ◽  
...  
Keyword(s):  
Control System ◽  
Energy Savings ◽  
Scale Validation ◽  
Membrane Bioreactors ◽  
Full Scale

scholarly journals Embedded Microcontroller with a CCD Camera as a Digital Lighting Control System

Electronics ◽  
2019 ◽  
Vol 8 (1) ◽  
pp. 33 ◽  
Author(s):  
George K. Adam ◽  
Panagiotis A. Kontaxis ◽  
Lambros T. Doulos ◽  
Evangelos-Nikolaos D. Madias ◽  
Constantinos A. Bouroussis ◽  
...  
Keyword(s):  
Control System ◽  
Power Consumption ◽  
Energy Savings ◽  
Functional Performance ◽  
Image Data ◽  
Ccd Camera ◽  
Zero Energy ◽  
Lighting Control ◽  
Digitally Controlled ◽  
Imaging Sensor

Although with the advent of the LEDs the energy consumption in buildings can be reduced by 50%, there exists a potential for energy savings due to lighting controls. Moreover, lighting controls can ensure that the near zero energy requirements by EU can be achieved for near zero energy buildings (nZEBs). For this reason, more sophisticated lighting controls must be proposed in order to take full advantage of LEDs and their flexibility concerning dimming. This paper proposes the architecture of an embedded computer camera controller for monitoring and management of image data, which is applied in various control cases, and particularly in digitally controlled lighting devices. The proposed system deals with real-time monitoring and management of a GigE camera input. An in-house developed algorithm using MATLAB enables the identification of areas in luminance values. The embedded microcontroller is part of a complete lighting control system with an imaging sensor in order to measure and control the illumination of several working areas of a room. The power consumption of the proposed lighting system was measured and was compared with the power consumption of a typical photosensor. The functional performance and operation of the proposed camera control system architecture was evaluated based upon a BeagleBone Black microcontroller board.

Energy saving in the aeration process by fuzzy logic control

1998 ◽  
Vol 38 (3) ◽  
pp. 209-217 ◽  
Author(s):  
J. Ferrer ◽  
M. A. Rodrigo ◽  
A. Seco ◽  
J. M. Penya-roja
Keyword(s):  
Fuzzy Logic ◽  
Control System ◽  
Fuzzy Logic Control ◽  
Closed Loop ◽  
Energy Savings ◽  
Average Deviation ◽  
Logic Control ◽  
Aerobic Reactor ◽  
Aeration Process ◽  
The One

An aeration fuzzy logic based control system has been developed and tested in the main aerobic reactor of a BARDENPHO process pilot plant. This system has been compared with two ordinary aeration process controllers: one- and two-aeration-level on/off controllers. Energy savings of about 40% over the one-level on/off controller and a more stable closed-loop response have been obtained. Thus, an improvement of about 60% in average deviation can be accomplished by the use of an AFLBC.

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