An Improved Timed Communication Buoy System

2017 ◽  
Vol 51 (4) ◽  
pp. 23-30 ◽  
Author(s):  
Ming Xu ◽  
Jiwei Tian ◽  
Wei Zhao ◽  
Qingxuan Yang ◽  
Chuan Tian
Keyword(s):  
Control System ◽  
Data Analysis ◽  
South China Sea ◽  
Mechanical Design ◽  
Control System Design ◽  
Electronic Control ◽  
Sea Trial ◽  
Electronic Control System ◽  
Local Current ◽  
Acoustic Doppler Current Profilers

AbstractIn this paper, we present an improved timed communication buoy system (TCBS). The system had a main float with a new mechanical design and a new electronic control system design, and described several modifications made to the autonomous communication float (ACF) of the improved TCBS. To evaluate the performance of this improved TCBS, a sea trial was conducted in the South China Sea from February to May 2015. During the sea trial, one of the ACFs was successfully released from the TCBS's main float and transmitted back the data collected by the dual acoustic Doppler current profilers (ADCPs) onboard. The preliminary data analysis for the local current conditions is also presented in this paper.

scholarly journals Recoverable autonomous sonde for subglacial lake exploration: electronic control system design

2021 ◽  
pp. 1-17
Author(s):  
Shilin Peng ◽  
Xiao Jiang ◽  
Yongzhen Tang ◽  
Chong Li ◽  
Xiaodong Li ◽  
...  
Keyword(s):  
Control System ◽  
System Design ◽  
Video Recording ◽  
Control System Design ◽  
Electronic Control ◽  
High Definition ◽  
Water Conductivity ◽  
Camera System ◽  
Subglacial Lake ◽  
Electronic Control System

Abstract Subglacial lake exploration is of great interest to the science community. RECoverable Autonomous Sonde (RECAS) provides an exploration tool to measure and sample subglacial lake environments while the subglacial lake remains isolated from the glacier surface and atmosphere. This paper presents an electronic control system design of 200 m prototype of RECAS. The proposed electronic control system consists of a surface system, a downhole control system, and a power transfer and communication system. The downhole control system is the core element of RECAS, and is responsible for sonde status monitoring, sonde motion control, subglacial water sampling and in situ analysis. A custom RS485 temperature sensor was developed to cater for the limited size and depth requirements of the system. We adopted a humidity-based measurement to monitor for a housing leak. This condition is because standard leak detection monitoring of water conductivity may be inapplicable to pure ice in Antarctica. A water sampler control board was designed to control the samplers and monitor the on/off state. A high-definition camera system with built-in storage and self-heating ability was designed to perform the video recording in the subglacial lake. The proposed electronic control system is proven effective after a series of tests.

Robust Electronic Control System Design Requires Signal Delivery Analysis

2004 ◽  
Author(s):  
Dennis Bogden ◽  
Michael Grimes ◽  
Larry Michaels ◽  
Richard Amann
Keyword(s):  
Control System ◽  
System Design ◽  
Control System Design ◽  
Electronic Control ◽  
Electronic Control System

Design of Electronic Control System of High-Grade Textile Machine Based on CAN Bus

2012 ◽  
Vol 503-504 ◽  
pp. 1580-1583
Author(s):  
Hui Shan Yu ◽  
Shou Hui Zhang ◽  
Xiao Kua Ji ◽  
Xin Jian Liu
Keyword(s):  
Control System ◽  
Can Bus ◽  
Fast Response ◽  
High Grade ◽  
Electronic Control ◽  
Accuracy Control ◽  
Operating Personnel ◽  
Electronic Control System ◽  
Textile Machine ◽  
Low Efficiency

According to some problems of Low efficiency of the current domestic Textile Machine，Reliability is bad，The operating personnel labor intensity，A single product varieties and so on. Design of electronic control system of high-grade textile machine based on CAN Bus. The system with RENESAS SH7047 chips as the controller chip, Realize the all of the interrupt signal, sensor signal detection, fuzzy PID algorithm and main shaft encoder location, Through the CAN bus transmission way to complete accuracy control ac servo system. The actual operation commissioning proves the electronic control system has the fast response, and robust, more kinds of textile and so on.

scholarly journals Design and Test Evaluation of Full Authority Digital Electronic Control System for an Auxiliary Power Unit

2018 ◽  
Vol 36 (6) ◽  
pp. 1102-1107
Author(s):  
Kai Peng ◽  
Fan Yang ◽  
Ding Fan ◽  
Linfeng Gou ◽  
Hongliang Xiao ◽  
...  
Keyword(s):  
Control System ◽  
Power Unit ◽  
Digital Control ◽  
Electronic Control ◽  
Digital Control System ◽  
Control Laws ◽  
Auxiliary Power Unit ◽  
Auxiliary Power ◽  
Electronic Control System ◽  
Key Techniques

A helicopter auxiliary power unit (APU) is initially equipped with a hydro-mechanical control system (HMC). Because HMC's complex structure is difficult to be modified to realize sophisticated control algorithms and the APU is faced with the need for performance improvement, it is urgently necessary to carry out digital control modification of HMC. Based on the analysis of control laws of the original HMC and differences between HMC and digital control system, key techniques involved in the digital control system are studied, such as overall structure, control laws and fuel system based on electric fuel pump, and finally a full authority digital electronic control system (FADEC) is developed for APU. Functions, performances and key techniques of the FADEC system are evaluated on test rig, and the test results show functions of original control system are enhanced and performances of APU are improved more effectively under the control of the designed FADEC compared with the original HMC.

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