{"id":7379,"date":"2023-05-12T10:18:25","date_gmt":"2023-05-12T08:18:25","guid":{"rendered":"https:\/\/wp.delphin.de\/?post_type=glossar&#038;p=7379"},"modified":"2026-07-02T14:57:35","modified_gmt":"2026-07-02T12:57:35","slug":"pid-controller-channel","status":"publish","type":"glossar","link":"https:\/\/www.delphin.de\/en\/glossar\/pid-regler-kanal\/","title":{"rendered":"PID controller channel"},"content":{"rendered":"<p class=\"wp-block-paragraph\">The <strong>PID contoller<\/strong> (Proportional-Integral-Derivative controller) is one of the most widely used and versatile types of controllers in automation and control engineering. It combines the characteristics of the three classic controller components\u2014the <strong>P-controller<\/strong>, of the <strong>I-controllers<\/strong> and the <strong>D-controllers<\/strong> \u2013 in a single control unit and can be used in both <strong>Array structure<\/strong> as well as in <strong>Parallel Structure<\/strong> be implemented. In what is known as a PID controller channel, this control function is implemented as a standalone, configurable channel within a measurement or automation system; it continuously compares a controlled variable with a specified setpoint and calculates a control signal based on that comparison.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">An Overview of the Three Components of the Rule<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>P-ratio (proportional):<\/strong> It responds in direct proportion to the current control error and ensures a rapid initial response from the controller, but generally leaves a residual control error.<\/li>\n\n\n\n<li><strong>I-component (integral):<\/strong> It accumulates the control error over time, thereby completely eliminating a persistent, steady-state control error\u2014though at the expense of response speed.<\/li>\n\n\n\n<li><strong>D-component (differential):<\/strong> It responds to the rate of change of the control error and thus acts proactively, thereby reducing overshoot and stabilizing the control behavior.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">Advantages of the PID Controller<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">The main advantage of a PID controller over other types of controllers lies in its high <strong>Adaptability to a wide variety of controlled systems<\/strong>. At a constant setpoint, it prevents a persistent control error both in the event of a reference change (change in the setpoint) and in the event of a disturbance (external disturbances). In addition, the PID controller compensates for delays within the controlled system, thereby significantly simplifying its operation, since a single, well-parameterized controller type can be used to solve a wide variety of control tasks.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Limitations of the PID Controller<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">The I component, which is important for stability because it prevents a steady-state error, also has a negative effect on the controller's response speed, since the integrated error must first be reduced. Furthermore, the PID controller encounters difficulties with controlled systems that have a <strong>dominant dead time<\/strong> \u2013 that is, a significant time delay between a change in the control variable and a measurable response of the controlled variable \u2013 reaches its limits and is generally not suitable for such applications. In such cases, alternative control strategies are used that specifically account for the dead time.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">PID Controller Channels in Measurement Technology<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">In modern measurement and test systems, PID controllers are often not implemented as separate hardware components, but rather as <strong>Software Channel<\/strong> implemented directly within the measurement software. The system continuously calculates a control signal based on a measured actual value and a specified setpoint, which controls, for example, a heater, a valve, or an actuator. This allows test sequences to be automated without the need for additional, separate control hardware\u2014the actual measurement data acquisition and control are integrated into a single system.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">PID Controller in Delphin \u2013 Practical Application<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">In measurement technology software <strong>ProfiSignal<\/strong> and in devices such as the <strong><a href=\"https:\/\/www.delphin.de\/en\/products\/complete-systems\/universal-testing-device\/\" data-type=\"produkt\" data-id=\"2180\">Universal testing device<\/a><\/strong> Delphin Technology provides PID controller channels as software channels. This makes it possible, for example, to implement multiple control loops simultaneously, adjust control parameters in real time, and generate setpoint curves for internal or external applications. A typical practical example is the <strong>Temperature Stabilization Using a PID Controller<\/strong> For mobile measurement tasks or test bench applications: The PID controller channel automatically compensates for deviations from the setpoint, thereby significantly reducing the amount of manual work required, while at the same time ensuring that the corresponding measurement data is recorded and documented in its entirety.<\/p>","protected":false},"featured_media":0,"template":"","class_list":["post-7379","glossar","type-glossar","status-publish","hentry"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.delphin.de\/en\/wp-json\/wp\/v2\/glossar\/7379","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.delphin.de\/en\/wp-json\/wp\/v2\/glossar"}],"about":[{"href":"https:\/\/www.delphin.de\/en\/wp-json\/wp\/v2\/types\/glossar"}],"wp:attachment":[{"href":"https:\/\/www.delphin.de\/en\/wp-json\/wp\/v2\/media?parent=7379"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}