vid1203/festo-llm-experiment-c

Experiment C — Equal-Weight Multivariable MPC, 3,000 Training Records

Paper: LLMs as Autonomous Controllers for Multivariable Industrial Fluid Processes Author: Vidyashree Rayar — BTU Cottbus-Senftenberg

Equal-weight MPC cost function (1.5×level + 1.5×temp). Best temperature accuracy across all experiments: 67.8% with SP+CoT+P. Isolates the effect of cost function design from data quantity.

Base Model

meta-llama/Llama-3.2-3B-Instruct fine-tuned with QLoRA (4-bit NF4, LoRA r=16, alpha=32, rsLoRA enabled).

Code & Results

github.com/vidyashreerayar/festo-llm-process-control