3BSE013234R1 TU830V1扩展模块

　　1、内容需求的提高

　　自古以来就一直使用流体动力，但最近的发展表明，人们对更安全、更安静的气动系统和防漏液压系统的需求不断增加。最近开发的反馈控制阀与早期流体动力系统的时代相比已经走了很长一段路，早期流体动力系统要么在全流量时打开，要么在没有流量时关闭。后来出现了比例伺服阀，它利用阀门的固有机械特性控制流量。

　　一项基本的技术发现是使用螺线管形式的电气控制。这开始，阀门的复杂性和复杂性以不断变化的速度发展，导致的比例积分微分 (PID) 电子反馈设备和基于计算机的阀岛系统通过现场总线网络连接。

　　比例积分微分 (PID) 控制是工业中最常用的控制算法。众所周知的 PID 控制器可以分配给他们在各种操作条件下的强度、其简单的功能和工程师使用当前计算机技术的易于操作性。

　　今天的工程师使用控制来修改工厂行为以保持系统输出稳定并改善响应时间（工厂从当前状态到新输入定义的状态所需的时间）或最小化工厂用于在不同的状态。为此，工程师自己操作控制器或使用机械设备或 PC 或 PC 相关技术。由于基于计算机的系统的发展，工程师现在可以使用 PC 和适当的硬件与植物进行交互并读取它们的输出和输入信号。

　　通常，比例积分微分 (PID) 控制器是一种经常用于控制电子设备和系统的设备。该设备通常应用数学原理来处理信号，该信号反过来会触发与其连接的电子设备的响应。数字 PID 控制器的功能通常与模拟控制器相同，但可能包括微处理器、可编程逻辑控制以及专用软件。

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　　Fluid power has been used since ages but recent developments have seen an increasing demand for safer, quieter pneumatic systems and leak-proof hydraulics. Recently developed feedback control valves have travelled a long way from the days of early fluid power systems, which were either on with full flow, or off with no flow. Later came along the proportional servo valves which controlled the flow using inherent mechanical features of the valve.

　　A fundamental technological discovery was with the use of electrical control in the form of the solenoid. This started, the sophistication and complexity of valves which evolved at a modifying pace leading to the most recent proportional integral derivative (PID) electronic feedback devices and computer based systems of valve islands linked by fieldbus networking.

　　Proportional-integral-derivative (PID) control is the most common control algorithm used in industry. PID controllers being well known can be assigned to their strength in various operating conditions, their simple functionality and easy operability by engineers using current computer technology.

　　Engineers today use control to either modify plant behavior to keep system output stable and improve response time (the time the plant takes to go from its current state to the state defined with the new input) or minimize the energy the plant uses to transition between the different states. To attain this, engineers operate controllers themselves or use mechanical devices or PC or PC-related technology. Thanks to the evolution of computer-based systems, engineers can now use PCs and appropriate hardware to interact with plants and read their output and input signals.

　　Usually a proportional-integral-derivative (PID) controller is a device which is often used to control electronic devices and systems. Mathematical principles are typically applied by this device to process a signal which inturn triggers a response in the electronics it is connected to. Digital PID controllers often function as same as to analog ones, but may include microprocessors, programmable logic controls, as well as specialized software.