Many PDFs available online are scanned from the original 1954 McGraw-Hill edition.
Detailed analysis of system stability and behavior using tools like the Laplace transform. Feedback and Servomechanisms: engineering cybernetics tsien pdf top
Here, Tsien anticipates and even machine learning . He writes about a system that "adjusts its own parameters to maintain optimal performance in a changing environment." This is the exact definition of a modern adaptive cruise control or self-tuning PID. Many PDFs available online are scanned from the