scholarly journals A Proposal of Multiple Control System based on Real-Time Trial Control and Its Application to Antiskid Braking System

1998 ◽  
Vol 118 (6) ◽  
pp. 897-908
Author(s):  
Masaaki Inaba ◽  
Ikuo Yoshihara ◽  
Hai-Jiao Guo ◽  
Kazuo Nakao ◽  
Kenichi Abe
Keyword(s):  
Control System ◽  
Real Time ◽  
Time Trial ◽  
Multiple Control ◽  
Braking System

The Control System for a Vibration Exciter

2013 ◽  
Vol 198 ◽  
pp. 600-605 ◽  
Author(s):  
Jarosław Konieczny ◽  
Marek Sibielak ◽  
Waldemar Rączka
Keyword(s):  
Control System ◽  
Real Time ◽  
Vibration Exciter ◽  
Parallel Operation ◽  
Control Loop ◽  
Hydraulic Actuator ◽  
Real Time Control ◽  
Multiple Control ◽  
Real Time System ◽  
Time Control

The paper presents the control system for an electro-hydraulic vibration exciter. A vibration exciter is used to carry out kinematic and forced excitations. Such excitations are needed during the static and dynamic examinations of suspension assemblies and their elements, such as damping springs. The most important elements of the exciter are: a hydraulic servo valve, a hydraulic actuator, a control system and a hydraulic supply station. An inductor works in a negative feedback loop. A set point generator and controller are parts of a real-time control system. The authors used a cRIO-9022 industrial computer from National Instruments analogue input and output modules. Apart from supporting I/O modules, the cRIO controller in a real-time system communicates with an FPGA circuit that forms a control loop. The use of an FPGA (Field Programmable Gate Array) allowed for implementing a hardware control loop through a vibration exciter, as well as other control loops used in the research (such as controlling an active executive element). The use of such a system architecture enabled the parallel operation of multiple control threads. The selected structure also allows for flexible selection of the measuring channels, which are essential for system monitoring and data acquisition.

scholarly journals Design of Refueling Control System with Multi-ControlTerminal Based on Network

Electronics ◽  
2021 ◽  
Vol 10 (13) ◽  
pp. 1559
Author(s):  
Bowen Zeng ◽  
Zhongmin Zhang ◽  
Xiao Zhang ◽  
Jing Xiang
Keyword(s):  
Control System ◽  
Real Time ◽  
Environmental Parameters ◽  
Control Unit ◽  
Full Duplex ◽  
Control Input ◽  
Multiple Control ◽  
Loop Control ◽  
The Stability ◽  
Display Control

This paper discusses a network-based refueling control system with multiple control terminals that achieves the control input and display of near-aircraft position, refueling station, and centralized console. The system can achieve the closed-loop control of the refueling input flow, automatic control of the fixed refueling amount, and collection of environmental parameters, such as pipeline pressure, according to the refueling aircraft model. Moreover, the system can dynamically display parameter information of the refueling process in real time on three terminals. To meet the requirements of system functions and the real-time performance of tasks, this study selected the LPC2378 controller with the ARM core. The controller uses the µC/OS-II embedded real-time operating system as the software operating platform. To achieve the special requirements of the explosion-proof system, the explosion-proof 485 bus was employed to communicate with the display control unit (DCU) of the intrinsically safe contact aircraft stand and refueling station. The communication adopts the dual-redundant Ethernet communication and full-duplex 485 communication. To avoid the influence of external equipment on the control circuit, the power isolation method was adopted to ensure the stability of the system. After comprehensive debugging of hardware and software, we deem that the system has good performance and can be applied in engineering.

Development of real time welding control system by using image processing.

1989 ◽  
Vol 7 (3) ◽  
pp. 363-367 ◽  
Author(s):  
Takaichi Koyama ◽  
Yoichi Takahashi ◽  
Masahiro Kobayashi ◽  
Junichiro Morisawa
Keyword(s):  
Image Processing ◽  
Control System ◽  
Real Time

scholarly journals A Real-Time, Automatic, and Dynamic Scheduling and Control System for PET Patients Based on Wearable Sensors

Sensors ◽  
2021 ◽  
Vol 21 (4) ◽  
pp. 1104
Author(s):  
Shin-Yan Chiou ◽  
Kun-Ju Lin ◽  
Ya-Xin Dong
Keyword(s):  
Control System ◽  
Real Time ◽  
Human Error ◽  
Dynamic Scheduling ◽  
Wearable Sensors ◽  
Time Data ◽  
Scan Time ◽  
Number Of Patients ◽  
And Control ◽  
Automatic Scheduling

Positron emission tomography (PET) is one of the commonly used scanning techniques. Medical staff manually calculate the estimated scan time for each PET device. However, the number of PET scanning devices is small, the number of patients is large, and there are many changes including rescanning requirements, which makes it very error-prone, puts pressure on staff, and causes trouble for patients and their families. Although previous studies proposed algorithms for specific inspections, there is currently no research on improving the PET process. This paper proposes a real-time automatic scheduling and control system for PET patients with wearable sensors. The system can automatically schedule, estimate and instantly update the time of various tasks, and automatically allocate beds and announce schedule information in real time. We implemented this system, collected time data of 200 actual patients, and put these data into the implementation program for simulation and comparison. The average time difference between manual and automatic scheduling was 7.32 min, and it could reduce the average examination time of 82% of patients by 6.14 ± 4.61 min. This convinces us the system is correct and can improve time efficiency, while avoiding human error and staff pressure, and avoiding trouble for patients and their families.

Sign in / Sign up

Export Citation Format

Share Document