2019年9月11日 · 《控制》 (Control) 是一款气质相当独特的作品，几乎可以说是目前市面上以「新怪谈文学」为创作灵感与背景题材的唯一 3A 大作，我个人也是非常喜欢。这里我想转载自己 …

2024年11月27日 · The three basic methods of valve control power input come from manual (user) input, external air pilot systems, and, of course, electrical solenoid circuits. Some valves make …

2025年3月21日 · There are many process control applications in the industry where it is desirable to have multiple control valves respond to the output of a common controller. Control valves …

2024年12月5日 · The beauty of ladder-logic programming is that it translates the technician’s understanding of traditional relay control circuits into a virtual form where contacts and coils …

2024年12月5日 · Thus, a cascade control system consists of two feedback control loops, one nested inside the other: A very common example of cascade control is a valve positioner, …

2025年12月1日 · A “ user-defined ” letter represents a non-standard variable used multiple times in an instrumentation system. For example, an engineer designing an instrument system for …

2022年3月23日 · Understanding the Basics of Pulse Width Modulation (PWM) Power delivered to devices can be changed by raising or lowering the voltage and current. But this method does …

2024年4月3日 · Controlling and optimizing plant processes is the goal of most control systems. It can be a challenge to distinguish between different types of control: a DCS or a high-level …

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2025年3月21日 · Given the common installation of manual “block” valves upstream and downstream of a control valve, there is usually a way to secure zero flow through a pipe even …