scholarly journals Analysis and Simulation of Auxiliary Space-based Measurement and Control Method Based on Beidou Navigation System

2018 ◽  
Keyword(s):  
Navigation System ◽  
Control Method ◽  
Auxiliary Space ◽  
And Control ◽  
Measurement And Control

Indirect Temperature Measurement and Control Method for Cell Culture Devices

2018 ◽  
Vol 15 (2) ◽  
pp. 420-429 ◽  
Author(s):  
Antti-Juhana Maki ◽  
Tomi Ryynanen ◽  
Jarmo Verho ◽  
Joose Kreutzer ◽  
Jukka Lekkala ◽  
...  
Keyword(s):  
Cell Culture ◽  
Temperature Measurement ◽  
Control Method ◽  
And Control ◽  
Measurement And Control

Research on the Measurement and Control Technology of Controllable Alternating Magnetic Field Generator to Magnetized Breed

2013 ◽  
Vol 303-306 ◽  
pp. 601-606
Author(s):  
Guo Wen Hu ◽  
Li Sheng Zhang ◽  
Lin Wang ◽  
Yin Jie Wang
Keyword(s):  
Magnetic Field ◽  
Control Method ◽  
Magnetic Energy ◽  
Voltage Regulation ◽  
Resonant Circuit ◽  
Magnetic Field Measurement ◽  
Control Technology ◽  
Magnetic Field Generation ◽  
And Control ◽  
Measurement And Control

Controlled and alternating induction magnetic field generation device which induces plant seeds to breed on floor space has been developed. The incentive ferrite induction coil is used in the device to produce induced magnetic field. The common AC-DC-AC topology was adopted for the variable frequency power supply, and AC power inverter circuit adopts SPWM inverter frequency modulation and voltage regulation mode, realizing the sinusoidal VVF. In order to improve the conversion efficiency of system electrical energy to magnetic energy, the RLC series resonant circuit is chosen in the circuit of output magnetic field. Measurement and control system using DSP microcomputer measurement and control technology and digital PID control method. The frequency and intensity of inductive magnetic field in the air gap changes as the changes of current intensity in coils. The experimental study of rice seeds shows that test result is obviously better than traditional biological magnetization induced breeding technique of fixed magnetic poles.

Study of Alumina Concentration Control Based on Intelligent Characteristic Model

2011 ◽  
Vol 317-319 ◽  
pp. 1314-1317 ◽  
Author(s):  
Tian Pei Zhou
Keyword(s):  
Control Method ◽  
Good Control ◽  
Aluminum Production ◽  
Alumina Concentration ◽  
Analysis Model ◽  
Control Effect ◽  
Characteristic Model ◽  
Electrolytic Aluminum Production ◽  
And Control ◽  
Measurement And Control

In electrolytic aluminum production processing, the measurement and control of alumina concentration is one of the three most important control aims. However, due to alumina concentration can not be measured directly and continuously online, and electrolytic aluminum production process is nonlinear, time-varying and large delay, which can not be described through the mathematical analysis model. Therefore, efficient and reliable development of alumina concentration control method is very important. In view of the above problems, alumina concentration is controlled by intelligent characteristic model and single neural adaptive PID controller, which achieve a good control effect.

Research on the ECAS System Model and Control Strategy

2013 ◽  
Vol 419 ◽  
pp. 654-660
Author(s):  
Xi Jin Zhang ◽  
Hong Yan Li ◽  
Zong De Fang ◽  
Mao Ting Wang ◽  
Jing Wen Pan ◽  
...  
Keyword(s):  
Control Method ◽  
Digital Simulation ◽  
Test Results ◽  
Test Bed ◽  
Air Spring ◽  
Measurement And Control System ◽  
Height Control ◽  
Car Model ◽  
And Control ◽  
Measurement And Control

Tractor SX4187NT361K, which is manufactured by the Shaanxi Automobile Group Limited Corporation, is regarded as a prototype vehicle. This paper investigates an 1/4 car model with air springs for the tractor and a working model of air spring. A height PID control method for ECAS is designed, and its digital simulation is conducted. An ECAS test-bed is designed, and hardware of a measurement and control system for the test-bed is designed with DSPACE system, its softwares are also designed with Simulink and ControlDesk. Finally, active and passive tests of the ECAS are conducted through changing frequencies and desired heights, simulation and test results show that the PID height control method for ECAS is feasible.

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