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Using automatic instead of automated tools is assumed to significantly reduce timing budgets needed for the actualization. However, it seems to be not always the case, especially if we consider the complete actualization cycle. The article presents an investigation of the time needed for the information base actualization when using separate automated or automatic tools, as well as the time needed...
The design of agricultural machinery navigation autopilot system for practical problems includes double RTK-DGPS receiver, navigation tracking controller, intelligent control terminal, the steering Angle sensor, automatic steering control valve group and other parts. According to the functional requirements, system adopts hierarchical control strategy, through the embedded Linux software and ARM development...
Hydraulic module car is for large component of flat-panel transport vehicles, it has a built-in power, modular splicing, interchangeability good characteristics, large-tonnage operations to meet the demand of the transportation. In this paper, through the use of full hydraulic pressure drive module car at home and abroad present situation and development trend of comprehensive analysis and comparison,...
This paper presents the control system of the pipeline loop leakage test system and describes the structure of the hardware and software of the control system. Field applications show that the control system not only can collect the parameters of the pipeline loop but also make the pipeline loop leakage test system run in steady state.
Aiming at the AC excitation control of high-head impulse hydroelectric generating unit, and in order to improve system reliability, a reconfigurable AC excitation control system for impulse hydroelectric generating unit based on fault-tolerance control is introduced. The reconfigurable scheme and structure of hardware system for AC excitation system is proposed. On the basis of the analysis of main...
In this paper, we propose a novel strategy to design a reliable and practical constant selling oil automatic system,through the use of S7-226PLC, flow meter, inverter and other hardware devices. A kind of fuzzy PID control algorithm was researched to guarantee the system accuracy. The fuzzy PID controller can control the inverter output frequency by changing the voltage of the inverter and self-tuning...
A high-resolution water display system(WDS) has been developed, which provides a new viewing modality for text/graphic information, unlike traditional display screens which use the brightness/color of built-in array of pixels on a flat panel to display information contents. The WDS has no fixed display screen which usese an array of water nozzles to precisely control the timing of water drops so that...
In our country, gas-fired has been widely applied to the residents and the life. All reasons of gas leaks cause personal injury and property damage. And those cause huge energy waste. The current gas leaks detector in family is single alarm function, at the same time it is not widely used. To solve these problems, paper designed a gas leaks automatic detection and processing device by using the Fujitsu...
On the demand for vehicle multi-wheel steering control system, its basic structure design was completed such as CPU choice, the signal collecting circuit of the steering wheel corner, oil tank displacement signal collection circuit and expanding circuit design of MCU, etc. The experiment results show that hardware design of multi-wheel steering electro-hydraulic proportion control is feasible.
We present in this paper some technical progresses in developing a novel information display mechanism called digitized water display (DWD). In sharp contrast to traditional display screens which use the brightness/color of built-in array of pixels on a flat panel to display information contents, the digitized water display we developed has no fixed display screen. Instead, we use an array of water...
The down-filling machine is the automatic, intelligent, mechanical and electric device with low-cost, great efficiency that can reduce labor intensity and improve labor conditions. It can fill down to duvet or down jacket from the container according to weight data exactly. This paper elaborated on several aspects: working principle of automatic down -filling machine, realization of control system,...
This paper has introduced the application of FIX DMACS industrial control configuration software on hydraulic control technology, and the basic composing of hydraulic experimental platform of hydraulic control valve. With the background of hydraulic experimental platform, it proves FIX DMACS has being applied in this field widely. We exemplify the related characteristics of hydraulic control valve...
The closed-center PDC/servo valves have over-lapped spools to prevent internal leakage so that the system can hold a position even when the power is off. However, the over-lapped spools also introduce deadbands, which are sandwiched by plant dynamics and valve dynamics. The sandwiched deadbands would degrade the achievable control performance and are very difficult to deal with. Instead of trying...
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