A high reliability control system

2002 ◽  
Author(s):  
J. Callahan ◽  
J. Collins ◽  
A. Qualls ◽  
W. Hunt
Keyword(s):  
Control System ◽  
High Reliability ◽  
Reliability Control

The Design and Application of DCS in Control System for Ceramic Kiln

2013 ◽  
Vol 321-324 ◽  
pp. 1848-1853
Author(s):  
Ming Yi ◽  
Zhi Ping Yang
Keyword(s):  
Control System ◽  
Software Design ◽  
High Reliability ◽  
Control Technology ◽  
Fuel Ratio ◽  
Advanced Control ◽  
Reliability Control ◽  
And Control ◽  
Design And Application ◽  
Monitor And Control

For the characteristics of control system for ceramic kiln, a new high-reliability control system is presented in this paper, using a hierarchical configuration, the DCS control system for three subsystem is designed, The temperature and atmosphere of kiln are controlled by fuel metering and air fuel ratio with computer and PLC, the structure and software design of the system are introduced, It is an advanced control technology. It’s validity is verified in a practical kiln monitor and control system. This template explains and demonstrates how to prepare your camera-ready paper for Trans Tech Publications. The best is to read these instructions and follow the outline of this text.

scholarly journals Research on an Improved Sliding Mode Sensorless Six-Phase PMSM Control Strategy Based on ESO

Electronics ◽  
2021 ◽  
Vol 10 (11) ◽  
pp. 1292
Author(s):  
Hanying Gao ◽  
Guoqiang Zhang ◽  
Wenxue Wang ◽  
Xuechen Liu
Keyword(s):  
Control System ◽  
Control Strategy ◽  
Sliding Mode ◽  
High Reliability ◽  
Permanent Magnet Synchronous Motor ◽  
Torque Ripple ◽  
Estimation Accuracy ◽  
Switching Function ◽  
Motor Speed ◽  
Rotor Position

The six-phase motor control system has low torque ripple, low harmonic content, and high reliability; therefore, it is suitable for electric vehicles, aerospace, and other applications requiring high power output and reliability. This study presents a superior sensorless control system for a six-phase permanent magnet synchronous motor (PMSM). The mathematical model of a PMSM in a stationary coordinate system is presented. The information of motor speed and position is obtained by using a sliding mode observer (SMO). As torque ripple and harmonic components affect the back electromotive force (BEMF) estimated value through the traditional SMO, the function of the frequency-variable tracker of the stator current (FVTSC) is used instead of the traditional switching function. By improving the SMO method, the BEMF is estimated independently, and its precision is maintained under startup or variable-speed states. In order to improve the estimation accuracy and resistance ability of the observer, the rotor position error was taken as the disturbance term, and the third-order extended state observer (ESO) was constructed to estimate the rotational speed and rotor position through the motor mechanical motion equation. Finally, the effectiveness of the method is verified by simulation and experiment results. The proposed control strategy can effectively improve the dynamic and static performance of PMSM.

Application of PID in Controllable Pitch Propeller of a Multipurpose Ocean Tug

2013 ◽  
Vol 464 ◽  
pp. 253-257
Author(s):  
Hui Fang Chen
Keyword(s):  
Control System ◽  
Automatic Control ◽  
Automatic Control System ◽  
High Reliability ◽  
Control Process ◽  
Good Control ◽  
Control Performance ◽  
Hardware Configuration ◽  
Design Idea ◽  
And Control

This paper takes the automatic control system of controllable pitch propeller in a multipurpose ocean tug as an example to describe the application of the S7-200 series PLC in the control system of 4500 horse power controllable pitch propeller in detail. The principle of control system is addressed, as well as the hardware configuration, the design idea of the main software and control process. The system shows high reliability, accuracy and good control performance in practical in practical running.

Second Paper: Failure-Survival Automatic Flight Control Systems for Aircraft with Particular Reference to a High Reliability Electrohydraulic Actuator

1965 ◽  
Vol 180 (1) ◽  
pp. 246-259
Author(s):  
R. Ruggles
Keyword(s):  
Control System ◽  
Control Systems ◽  
Flight Control ◽  
High Reliability ◽  
Supply System ◽  
Design Criteria ◽  
Flight Control System ◽  
Advantages And Disadvantages ◽  
System Configurations ◽  
Very High

The author discusses some of the problems of failure-survival automatic flight control systems and suggests some basic ground rules as design criteria. The advantages and disadvantages of some of the main types of system are discussed: duplex, triplex, triple component, duplicate-monitored and quadruplex systems being covered. In particular, a quadruplex actuator is described which has been designed and developed mainly for automatic flight control system applications where a very high degrees of failure-survival capability is required. A detailed failure analysis of the various systems is carried out and the importance of the electrical and hydraulic supply system configurations and failure rates is brought out.

Stream Selector’s Control System Based on High-Precision Incremental Encoder

2013 ◽  
Vol 303-306 ◽  
pp. 1657-1660
Author(s):  
Zhi Guang Zhang ◽  
Wei Hu ◽  
Xiao Qiong Li ◽  
Xue Fei Lv ◽  
Min Ping Zhang ◽  
...  
Keyword(s):  
Control System ◽  
Power Consumption ◽  
High Precision ◽  
Position Control ◽  
High Reliability ◽  
Dc Motor ◽  
Step Motor ◽  
Low Power Consumption ◽  
Incremental Encoder ◽  
The One

For the precision rotor position control of stream selector, a control system based on direct current motor (DC motor) has been constructed. The DC motor, with a high-precision incremental encoder used as the driving force, was assembled with the stream selector rotor through a shaft coupling. Following the motor rotation, the encoder generated two-channel quadrature pulses and one channel index pulses. An ultralow-power consumption microcontroller (msp430f2232) received theses pulses and calculated them. The position of the slot was determined by the number of pulses counted from the index pulse. Operator can set and monitored the slot positions of five stream selectors simultaneously through the program which was written with LabVIEW on the host computer. This module featured high reliability and low power consumption compared with the one driven by step motor. Beyond that, it was much smaller and lighter.

Based on Vector Control of All-Electric Injection Molding Machine Control System Design

2012 ◽  
Vol 490-495 ◽  
pp. 2210-2214
Author(s):  
Ming Hui Li ◽  
Zheng Qi Li
Keyword(s):  
Control System ◽  
Injection Molding ◽  
Vector Control ◽  
System Design ◽  
High Reliability ◽  
Permanent Magnet Synchronous Motor ◽  
Control System Design ◽  
Molding Machine ◽  
Injection Molding Machine ◽  
Machine Control

According to the all-electric injection molding machine control system requirements, the vector control applied to the permanent magnet synchronous motor control, we propose a fully electric injection molding machine control system design, through analysis and research that can further improve the program precise all-electric injection molding machine control, its stability, high reliability, to better meet the all-electric injection molding machine of precision and stability requirements.

Research on Application of Hall Integrated Sensors

2012 ◽  
Vol 226-228 ◽  
pp. 1971-1974
Author(s):  
Qing Tian Li
Keyword(s):  
Magnetic Field ◽  
Control System ◽  
Automatic Control ◽  
Automatic Control System ◽  
Electric Motor ◽  
High Reliability ◽  
Electric Circuit ◽  
Integrated Sensor ◽  
Electrical Machinery ◽  
Research On Application

This essay study that in magnetic field and current intensity, measurement, work of electric motor regulating speed applied by Hall integrated sensor shows that in electrical machinery electric circuit control and automatic control system, using Hall integrated sensor has stable properties, high reliability, good temperature stable properties, anti-pollution, without touch dot, etc advantages, comparing with traditional automatic control electric circuit has obvious advantages. It attaches importance to many people in practical use.

Energy Dissipation Behavior of an Autonomous Controller for Semi-Active Control Device

2009 ◽  
Author(s):  
Ming-Hsiang Shih ◽  
Wen-Pei Sung
Keyword(s):  
Control System ◽  
Energy Dissipation ◽  
Active Control ◽  
High Reliability ◽  
Structural Response ◽  
Control Device ◽  
Manufacturing Cost ◽  
Moving Direction ◽  
Control Order ◽  
The Right

In this research, autonomous controller is developed to provide the function of “Sensing-Computing-Transferring” for improving of energy dissipation capability of semi-active control device. This proposed controller has qualifications of detecting structural response under the excitation of earthquake; it depends on the control law to produce control order to adjust and control the action of semi-active control damper. The principle of this controller is: 1.) autonomous controller and damper-added stiffness element are parallel connection; 2.) the direction of pressure force and velocity moving direction of structure are changed simultaneously by this controller; 3.) the action of switching direction of damper has been finished when the tiny displacement of structure is happened by reverse process of moving direction of structure. Practically, this controller was simulated by connecting soft springs, damper and actuator in serial. The experimental results indicate that the function and energy-dissipating behavior of this proposed controller is similar to traditional semi-active controller except that this controller can switch the damper status at the right moment. This proposed controller can replace the detector, central control computer and damping controller included in original semi-active control system. The advantages of this developed autonomous controller are: 1.) low manufacturing cost; 2.) low requirement of system maintenance; 3) high reliability of control system.

Research and Development of Automatic Control System on Material Split Packing and Packaging Integrated Machine

2014 ◽  
Vol 533 ◽  
pp. 294-297
Author(s):  
Kai Yang ◽  
Zhong Shen Li ◽  
Lei Zhang
Keyword(s):  
Control System ◽  
High Speed ◽  
High Reliability ◽  
Automatic Measurement ◽  
Power Module ◽  
Memory Module ◽  
Machine Interface ◽  
Output Driver ◽  
And Control ◽  
Measurement And Control

In order to meet the high speed, high precision, high reliability of the packaging machine, a novel control system is provided. In the hardware, the main circuits consisted of main processor module, memory module, temperature measurement and control module, input signal detection module, material split packing module, output driver module, human-machine interface module, system monitor module, power module and JTAG debug module, etc. In the software, the multi-tasking operating system μC/OS-Ⅱ and the graphical user interface μC/GUI were successfully transplanted into LPC2478. Then an experimental platform was established. And many control tasks, including automatic measurement, making bags, loading, transferring, pumping vacuum, sealing and data display, were automatically and continuously executed on the platform. Finally the results show: the machine can package 30 packets (5 g per packet) in a minute; the packaging errors ≤ 0.2 g; the packaging qualified rates ≥ 93%. In conclusion, the system performance is good.

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