Hydraulischeelektrische

Hydraulischeelektrische is a term used to describe systems that integrate hydraulic power transmission with electric control and energy management. In German technical language it denotes electro-hydraulic arrangements, where electrical energy drives hydraulic components and hydraulic energy is used to power actuators, with electronic control providing precision and regulation.

The basic principle involves converting electrical energy into hydraulic power through pumps or motors, and then using hydraulic actuators such as cylinders or motors to produce linear or rotary motion. Precise positioning and force control are achieved with sensors (pressure, position, velocity) and electronically controlled valves (servovalves or proportional valves) guided by a control unit (PLC, embedded controller, or digital signal processor). The architecture typically comprises a power source, hydraulic power pack, fluid lines and actuators, sensors, and a control system that orchestrates the operation.

Applications span industrial automation, machine tools, construction and agricultural machinery, aerospace actuation systems, and robotics. Electro-hydraulic systems are valued for high power density, fast response, robustness in demanding environments, and the ability to implement complex force and motion profiles. They also enable safe and precise control in systems requiring large actuating forces.

Challenges include system complexity, maintenance of hydraulic fluids and seals, potential leakage, thermal management, and efficiency losses in pumps and valves. Modern developments focus on energy efficiency, improved energy recovery, and advanced digital control to optimize performance. Variants include electro-hydraulic actuators and electro-hydraulic servosystems, which combine compact electrical control with hydraulic actuation for demanding applications.