Compensators are devices or systems used to balance or counteract changes in a process or environment. They help maintain stability by adjusting for variations, such as pressure, temperature, or flow. Commonly found in engineering and control systems, compensators ensure that a system operates efficiently and effectively. In the context of control theory, compensators can be classified into different types, such as proportional, integral, and derivative compensators. Each type serves a specific purpose in adjusting the system's response to disturbances, ultimately improving performance and reliability in various applications, including automotive systems and industrial automation.