How to control the output force or torque of the hydraulic cylinder

How to control the output force or torque of the hydraulic cylinder

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

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

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

3, change the working area: the output force or torque of the hydraulic cylinder is 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 done by changing the cylinder or using an adjustable piston rod.

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

5. Feedback control: The feedback control system uses sensors to monitor the output force or position of the hydraulic cylinder, and controls the work of the hydraulic system according to the feedback information. This method can achieve 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 using a flow control valve.

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. The governor is usually used in conjunction with the cylinder to adjust the flow rate and control the speed of the cylinder.

Choosing the right method depends on the requirements and control accuracy of the specific application. It should be noted that when the output force or torque control of the hydraulic system is carried out, the system must be carefully designed to ensure stability and comply with the relevant regulations.