A Switched Inertance Device for Efficient Control of Pressure and Flow

2009 ◽  
Author(s):  
D. Nigel Johnston
Keyword(s):  
Power Consumption ◽  
Experimental Results ◽  
Initial Investigation ◽  
Hydraulic Transformer ◽  
Controlled Systems ◽  
Efficient Control ◽  
Step Down ◽  
Prototype Device

This paper reports on an initial investigation of a switched inertance device (‘SID’). Using this device, flow and pressure can be varied by a means that does not rely on dissipation of power. The device can provide a step-up or step-down of pressure or flowrate, analogous to a hydraulic transformer. Simulated and experimental results on a prototype device show a promising performance. The device could potentially provide very significant reduction in power consumption over conventional valve-controlled systems, provided that noise issues and some other practical problems can be overcome.

scholarly journals Pneumatic Actuator Controlled by Proportional Valve. Experimental results

2021 ◽  
Vol 286 ◽  
pp. 04010
Author(s):  
Valentin Nicolae Cococi ◽  
Constantin Călinoiu ◽  
Carmen-Anca Safta
Keyword(s):  
Control Valve ◽  
Industrial Applications ◽  
Experimental Results ◽  
Pneumatic Actuator ◽  
Proportional Valve ◽  
Controlled Systems ◽  
Automation Systems ◽  
Simulation Results ◽  
The Mathematical Model ◽  
Fire Ignition

In nowadays the pneumatic controlled systems are widely used in industrial applications where valves must be operated, where there is a fire ignition risk, or in different automation systems where a positioning action is desired. The paper presents the experimental results of a pneumatic actuator controlled by a proportional control valve. The goal of the paper is to compare the experimental results with the numerical simulation results and to improve the mathematical model associated with the experiment.

The Research and Design of the Adaptive Pulse Demagnetizer

2012 ◽  
Vol 182-183 ◽  
pp. 427-430
Author(s):  
Li Feng Wei ◽  
Liang Cheng ◽  
Xing Man Yang
Keyword(s):  
Adaptive Control ◽  
Power Consumption ◽  
Low Power ◽  
Control Method ◽  
Experimental Results ◽  
Low Power Consumption ◽  
Reliable Operation ◽  
Charge Current ◽  
Long Life ◽  
Research And Design

A adaptive control method of the pulse demagnetizer was presented, Can adjust the strength of the charge current automatically according to the changes of the magnetic content to ensure the constant of the magnetic field.The experimental results have shown that it has the advantages of low power consumption, strong anti-interference capability, stable and reliable operation, long life and good demagnetizing effect, when compared to the conventional demagnetizers.

A Biomimetic Jellyfish-Inspired Jet Propulsion System Using an Iris Mechanism

2012 ◽  
Author(s):  
Kenneth Marut ◽  
Colin Stewart ◽  
Alex Villanueva ◽  
Dragan Avirovik ◽  
Shashank Priya
Keyword(s):  
Power Consumption ◽  
Test Stand ◽  
Propulsion System ◽  
Experimental Results ◽  
Jet Propulsion ◽  
Iris Diaphragm ◽  
Propulsion Mechanism ◽  
Vehicle Efficiency ◽  
Maximum Thrust

A bio-inspired jet propulsion mechanism was designed and developed for development of proficient unmanned undersea vehicles (UUVs). The propulsion mechanism mimics that of the Sarsia sp. jellyfish which measures approximately 1 cm in diameter. In order to achieve a biomimetic uniform bell contraction, an electrical motor was used in conjunction with a novel circumferential actuator based upon a mechanical iris diaphragm. This mechanism allows actuation of a deformable cavity. The current prototype was scaled to a diameter 10 times larger than Sarsia measuring 10 cm in diameter. The performance of the propulsion mechanism was analyzed both experimentally theoretically. The prototype was mounted on a test stand which allowed for measurement of thrust and power consumption. Analytical and experimental results were compared to that of the performance of Sarsia. It was found that the overall mechanism created a maximum thrust of 5.1 N with a calculated vehicle efficiency of 0.17% and proficiency of 4.8 s−1.

scholarly journals Low noise low power readout circuit for soft X ray detection

2003 ◽  
Vol 1 (03) ◽  
Author(s):  
A. Cerdeira-Estrada ◽  
A. De Luca ◽  
A. Cuttin ◽  
R. Mutihac
Keyword(s):  
Power Consumption ◽  
Low Power ◽  
Theoretical Calculations ◽  
Silicon Detector ◽  
Low Noise ◽  
Experimental Results ◽  
X Rays ◽  
Readout Circuit ◽  
X Ray ◽  
Low Power Cmos

A new low power CMOS ASIC for the detection of X-rays was optimized for low power and low noise. Theoretical calculations and optimizations are presented and compared with experimental results. Noise as low as 120+25*Cin [pF] ENC rms was obtained including a silicon detector of 1.3 pF and 0.3nA of leakage. The power consumption is less than 100 W. Other circuit parameters are also shown.

scholarly journals Design of Energy Efficient Control Unit and Implementation on High Performance FPGA

2019 ◽  
Vol 8 (12S2) ◽  
pp. 23-26
Keyword(s):  
Power Consumption ◽  
Energy Efficient ◽  
Field Programmable Gate Array ◽  
High Performance ◽  
Control Unit ◽  
Input Output ◽  
Green Communication ◽  
Power Efficient ◽  
Efficient Control ◽  
Field Programmable

With the crisis of power across the globe, green communication and power-efficient devices are getting more and more attention. This work emphasis about the implementation of Control Unit (CU) circuit on FPGA kit. In this project, power consumption of CU circuit is analyzed by changing the different Input/Output (I/O) standards of FPGA. This project is implemented on Xilinx 14.1 tool and the power consumption on CU is calculated with X Power Analyzer tool on 28-Nano-Meter (nm) Artix-7 Field Programmable Gate Array (FPGA). Out of different I/O standards, CU circuit is most power efficient with LVCMOS I/O standard on Artix-7 FPGA

Power and Latency Optimized Deadlock-Free Routing Algorithm on Irregular 2D Mesh NoC using LBDRe

2013 ◽  
Vol 4 (2) ◽  
pp. 36-49
Author(s):  
Renu Verma ◽  
Mohammad Ayoub Khan ◽  
Amit Zinzuwadiya
Keyword(s):  
Power Consumption ◽  
Routing Algorithm ◽  
Experimental Results ◽  
Virtual Channel ◽  
Hardware Cost ◽  
Distributed Routing ◽  
Crucial Problem ◽  
Average Latency ◽  
Irregular Mesh ◽  
Routing Tables

Efficient routing is challenging and crucial problem in the irregular mesh NoC topologies because of increasing hardware cost and routing tables. In this paper, the authors propose an efficient deadlock-free routing algorithm for irregular mesh NoCs which reduces the latency and power consumption significantly. The problem with degree priority based routing algorithm is that it cannot remove deadlocks in irregular mesh topologies. Therefore, the authors use the extended Logic Based Distributed Routing (LBDRe) to remove deadlock situations without using any virtual channel in the degree priority based routing algorithm. The proposed LBDRe based technique also removes the dependency on routing tables. The authors further apply odd-Even routing algorithm to LBDRe to ensure that some turns are prohibited to remove deadlocks. Experimental results show that the proposed routing algorithm reduces power consumption by 9–22% and overall average latency by 8–12% with the minimum hardware cost for the irregular mesh NoC topologies.

Coupled and Self-Adaptive Under-Actuated Finger With a Novel S-Coupled and Secondly Self-Adaptive Mechanism

2014 ◽  
Vol 6 (4) ◽  
Author(s):  
Guoxuan Li ◽  
Chi Zhang ◽  
Wenzeng Zhang ◽  
Zhenguo Sun ◽  
Qiang Chen
Keyword(s):  
Power Consumption ◽  
High Power ◽  
Experimental Results ◽  
Transmission Mechanism ◽  
Adaptive Mechanism ◽  
The Novel ◽  
Force Analysis ◽  
Grasping Force ◽  
High Power Consumption ◽  
Self Adaptive

This paper presents a novel under-actuated (UA) finger with first coupled and secondly self-adaptive (COSA) grasping mode. COSA fingers can adaptively grasp objects with different sizes and shapes while its motions during grasping are anthropopathic. Until now there are two COSA mechanisms available and they are both direct parallel combinations of coupled mechanism and self-adaptive mechanism. These kind of direct combinations lead to complex mechanical structure and high power consumption. This paper proposes a novel single-route transmission mechanism for COSA grasping mode, S-coupled and directly self-adaptive (CDSA) mechanism for short. Compared with available COSA mechanisms, the S-CDSA mechanism has simpler structure and higher grasping force. Design of 2-joint S-CDSA finger is introduced in this paper. Force analysis for 2-joint S-CDSA finger is given. Furthermore, a 2-joint S-CDSA finger is manufactured. The force analysis and experimental results show that the novel S-CDSA mechanism is effective.

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