KEYWORDS: Relays, Resistors, Data acquisition, Design and modelling, Control systems, Resistance, Power supplies, Photonic integrated circuits, Data storage, Capacitance
In Alternating Current (AC) and Direct Current (DC) control systems, relays witnessed wide applications in automatic control, communication, remote control, telemetry, power electronic equipment, and mechatronics. The duration of its operation has a great impact on the reliability of the entire equipment. This paper summarizes the current common influencing factors of the electrical performance of relays and the energy consumption and current limiting methods of AC and DC arc breaking. On this basis, a detailed analysis is made in terms of the hardware and software design of the electrical performance test system for AC/DC relays, in the hope of searching for some rules of relay design, so as to provide help for the development of relays in the future.
KEYWORDS: Fluctuations and noise, Inspection, Geographic information systems, Absorption, Control systems, Adsorption, Robotic systems, Control systems design, Motion analysis, Information visualization
According to the needs of pipeline inspection and cleaning in power industry, an omni-directional motion robot with a negative pressure adsorption is proposed. The robot can not only achieve the stable adsorption and movement of the vertical walls, but also has a brief structure, and high flexibility. Firstly, in consideration of the actual performance requirements of the project, we determined the scheme selection of different modules of the robot. Secondly, Maxwell module of ANSYS finite element analysis software was used to study the adsorption device, and an adsorption device with stable adsorption was obtained, which ensured the safe and stable operation of the robot on the vertical wall. Thirdly, the hardware system and control system of the robot are determined and the construction of the robot system is completed. Then the dynamics of the robot are analyzed, and the simulation is carried out according to the analysis. It is verified that under the control of PID algorithm, the acceleration of the robot can be in a stable state finally, which ensures the robot is stable in the process of motion. Finally, we finished experiments of the robot and verified the robot is stable whenever it works on walls.
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