How to control the output force or torque of hydraulic cylinders

How to control the output force or torque of hydraulic cylinders

To control the output force or torque of the hydraulic cylinder, the following methods can be used:

1, control fluid pressure: the output force or torque of the hydraulic cylinder is proportional to the fluid pressure in the hydraulic system. By controlling the output pressure of the hydraulic pump or the opening of the valve, you can adjust the oil pressure in the hydraulic system, thereby controlling the output force or torque of the cylinder. This is a common control method.

2, the use of adjustable valves: adjustable valves, such as proportional or servo valves, can be used to accurately control the output force or torque of the hydraulic cylinder. These valves can dynamically adjust the pressure in the hydraulic system according to demand to achieve accurate control.

3, change the working area: the output force or torque of the hydraulic cylinder is directly proportional to the effective working area of the cylinder. By changing the effective working area of the cylinder, the output force or torque can be adjusted. This can be achieved by replacing the cylinder or using an adjustable piston rod.

4, the use of multi-stage hydraulic system: multi-stage hydraulic system allows for different levels of oil pressure to work, so as to achieve a different range of output force or torque control. This method is usually used in applications that re

quire a wide range of output force.

5, feedback control: feedback control system uses sensors to monitor the output force or position of the hydraulic cylinder, and based on the feedback information to control the work of the hydraulic system. This approach allows for accurate closed-loop control.

6, change the hydraulic flow: by changing the flow in the hydraulic system, you can affect the output force or speed of the cylinder. This can be achieved by adjusting the speed of the hydraulic pump or the use of flow control valves.

7, the use of governor: governor is a device that can control the speed of the hydraulic cylinder, thereby affecting the output force or torque. Governor is usually used in conjunction with the cylinder, used to adjust the flow and control the speed of the cylinder.

The selection of the appropriate method depends on the requirements of the specific application and the precision of the control. It is important to note that when controlling the output force or torque of a hydraulic system, the system must be carefully designed to ensure stability and compliance with relevant regulations.