KDRDE5K-31/30C50-123 YN35V00054F1 SK200-8 hydraulic pump solenoid valve

Control principle of proportional solenoid valve
Proportional solenoid valve is a special control solenoid valve, its control principle is to control the opening of the valve through the external input command signal, so that the control flow and pressure always maintain the same proportion as the command signal. It uses a "position feedback" technology, which can accurately adjust the position of the valve according to the flow control signal, so as to achieve accurate control requirements, so it is widely used in accurate hydraulic system control.
The main principle of the proportional solenoid valve is: the flow control signal and the control force are used as the energy source of the electromagnetic coil to make the electromagnetic
The iron controls the opening of the valve, so the opening of the valve is roughly proportional to the size of the flow control signal. According to the different flow, each control position has a different flow value, which is fed back to the flow controller, the flow controller can adjust the position of the valve according to the output signal of the same size as the flow here, so as to achieve precise control requirements.
The control principle of the proportional solenoid valve mainly has three aspects: the first is that the fluctuation of the electrical signal affects the opening of the valve
Degree; The second is to control the rotation of the valve through the electromagnetic force, and the third is to control the opening degree of the valve according to the rotation of the valve, and then pass the feedback signal loop to the flow controller to achieve the control of the flow.
The working process of the proportional solenoid valve can be summarized as four steps. First, the power supply is always stable, and then the proportional control signal is obtained from the controller and transmitted to the proportional solenoid valve;
Second, the proportional control signal is converted into electromagnetic force excitation, thereby controlling the rotation of the valve;
Third, according to the rotation of the valve to control the opening degree of the valve, and then feedback to the controller,
Fourth, according to the feedback signal to adjust the valve spring, so as to achieve accurate control of the valve opening degree.