How is precision control of rodless cylinders achieved

With the continuous development of industrial automation technology, precision control has become a vital part of modern industrial production. In this process, the rodless cylinder has become an indispensable part of the industrial control system with its unique design and superior performance.

Control principle
Before introducing the precision control of rodless cylinders, it is first necessary to understand its control principle. Rodless cylinders control the piston movement inside the cylinder by adjusting air pressure to achieve push-pull actions. By accurately adjusting the size and change rate of air pressure, the movement speed, acceleration and stopping position of the cylinder can be controlled, thereby achieving precise motion control.

Control Method
Achieving precision control of rodless cylinders mainly relies on the following methods:
Air source control: Control the movement of the cylinder by adjusting the pressure and flow of the air source. Air source control is the basis for precise control of rodless cylinders. The speed and strength of the cylinder can be controlled by adjusting the supply of air sources.
Air pressure adjustment: By adjusting the air pressure to control the opening and closing speed of the valve, precise adjustment of the air pressure inside the cylinder is achieved. Air pressure adjustment can accurately control the thrust and speed of the cylinder as needed to meet different process requirements.
Position feedback: Use position sensors and other devices to monitor the position information of the cylinder in real time and feed it back to the control system to achieve closed-loop control. Position feedback can achieve accurate control of the cylinder position, avoid position errors caused by external factors, and improve the stability and accuracy of the system.
PID control algorithm: The PID control algorithm is used to dynamically adjust parameters such as air pressure and air flow, so that the system can quickly respond to external instructions and adjust control parameters in real time to achieve the desired motion state. The PID control algorithm can effectively suppress the overshoot and oscillation phenomena of the system and improve the dynamic responsiveness and stability of the system.

Implementation technology
The precision control of rodless cylinders mainly relies on advanced control technology and devices, including:
Solenoid valve: used to control the switching and flow adjustment of the air source, which can achieve precise control of air pressure.
Position sensor: used to monitor the position information of the cylinder and feed it back to the control system to achieve closed-loop control.
Control system: Advanced control algorithms and software are used to precisely regulate the movement of the cylinder to achieve high-precision motion control.
Regulating valve: used to adjust the air pressure and flow inside the cylinder to achieve precise control of the cylinder thrust and speed.
Data communication technology: Use modern data communication technology to realize real-time data transmission and issuance of control instructions between the control system and the cylinder, ensuring that the control system can respond to external instructions timely and accurately.


CRY Series Rodless Cylinder uses a permanent magnet inside the hollow piston rod to drive another magnet outside the rod to move. To be specific, a set of permanent magnetic rings is installed on the piston, and the magnetic force acts through the cylinder with another set of magnetic rings inside the outer slider. Because the two sets of magnetic rings are opposite in magnetism, they have a strong mutual attraction. The piston moves when it is pushed by air pressure in the cylinder.