Proportional electromagnet R902603450 piston pump coil R902603775 R902650783 power coil

Proportional electromagnet

It has been mentioned many times before that the drive control part, which occupies a very important position in the proportional valve, is the electro-mechanical converter that converts the electrical signal into the displacement signal. This section will explain it in detail.
The most important controlled parameters in hydraulic control system are pressure and flow, and the most basic means to control the above two parameters is to control the convection resistance. One technique for controlling flow resistance is direct electro-hydraulic conversion. It uses an electro-viscous hydraulic oil, a fluid medium that is viscous sensitive to electrical signals, to achieve electro-hydraulic viscosity conversion, so as to control flow resistance and achieve pressure and flow control of the system Purpose. Obviously, this flow resistance control method is more simple, it does not need electrical to mechanical conversion elements. However, this technology has not yet reached the practical stage and requirements.
At present, the controlled flow resistance structure that can be realized in the production technology is the indirect electro-hydraulic conversion through the electro-mechanical converter. The input electrical signal is converted into a mechanical quantity. The electro-mechanical converter is one of the key components of the electro-hydraulic proportional valve, and its role is to convert the amplified input signal current into a proportional mechanical quantity.