The function of a hydraulic system is to increase force by changing pressure. A complete hydraulic system consists of five parts: power element, actuator, control element, auxiliary elements (accessories), and hydraulic oil.
Hydraulic systems can be divided into two categories: hydraulic transmission systems and hydraulic control systems. Hydraulic transmission systems primarily function to transmit power and motion. Hydraulic control systems, on the other hand, ensure that the hydraulic system output meets specific performance requirements (especially dynamic performance). The term "hydraulic system" usually refers primarily to the hydraulic transmission system.
