self-closing valve

The paper establishes a double-loop control model suitable for three-phase electric regulating valve with large capacity, presents the mathematical model of the velocity generator, which takes increment of valve position as input, and the velocity control strategy for fuzzy parameter self-aligning PID.

本文构建了适用于大流量三相电动调节阀的双闭环控制模型，提出了以阀位增量为输入量的速度发生器的数学模型和模糊参数自整定PID的速度控制策略。

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Finally, the self-tuning PID is applied into intelligent valve positioner. 4.

最终将自整定PID控制算法应用于智能阀门定位器中。

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The chief products include: Bellows seal globe valve, Free-float steam trap, Pilot pressure reducing valve, Pneumatic control valve, Self-acting temperature-sensing valve, Cyclone separator etc.

目前工厂生产的主导产品有：波纹管密封截止阀、自由浮球疏水阀、先导式减压阀、气动调节阀、自作用式温控阀、汽水分离器等。

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Self-tuning of PID Parameters on Intelligent Valve Positioner

智能阀门定位器PID参数自整定及控制算法设计

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For Variable Valve Timing ( VVT) system, a kind of self-learning control method was proposed.

针对可变相位机构，提出了一种自学习型的控制方法。

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Based on the Matlab Simulation Study of Velocity Control by Adjust Flux Thermostatic valve is a new-style self-adjustor of liquid temperature and flux, whose function is to adjust flux of two different liquids when liquids pour into the valve room.

基于Matlab的液压节流调速性能仿真研究温度控制阀（thermostatic valve）是一种新型的自力式流体温度、流量控制调节器。

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To cope with the incorrectness of the mathematical model for the movement of the self-acting ball valve in the reciprocating pump, we rebuilt the accuracy differential equation group to describe the movement of the ball valve.

针对现有往复泵自动球阀运动规律数学模型存在的问题，修正并重建了描述自动球阀运动规律的精确微分方程组。

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Efficient and Energy Saving Prcduct& Self force Adjusting Valve

高效、节能的产品&自力式调节阀

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Properties of Temperature Difference Self-power Adjusting Valve Used in Blast Furnace

高炉用温差自力式调节阀的特性

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The Self-balanced Flow Valve and the Self-operated Differential Pressure Valve

自力式流量平衡阀与自力式压差控制阀

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