node-red-contrib-i-element

Integral element (I-Glied) with anti-windup for control systems. Integrates an input signal over time with configurable integration time Ti and output clamping.

Install

npm install node-red-contrib-i-element

Usage

Send a numeric value as msg.payload. The node integrates x * dt / Ti on each call.

| msg | Effect | |-----|--------| | msg.payload = 5 | Input value to integrate | | msg.reset = true | Reset integral to 0 | | msg.set = 50 | Set integral to specific value | | msg.Ti = 120 | Override integration time at runtime (in configured unit) |

Output

msg.payload = current integral value (clamped to outMin/outMax).

{
  "iElement": {
    "input": 5,
    "integral": 42.3,
    "Ti": 60,
    "dt": 30.1,
    "clamped": false,
    "clampedAt": null
  }
}

License

MIT — sr.rpo