What is proportional valve amplifier?

A hydraulic proportional valve with amplifier card is an important component in a hydraulic system to precisely control fluid flow and pressure. This article aims to learn more about what a proportional valve amplifier is and how it works in conjunction with a hydraulic proportional valve. 

 Hydraulic systems play a vital role in various industries including manufacturing, automotive and aerospace. These systems use hydraulic valves to control the flow and direction of fluids and ultimately the movement of mechanical components. Proportional valves are designed to provide accurate and smooth control of fluid flow and pressure. 

 As the name implies, a proportional valve amplifier amplifies the control signal received from a command device or sensor and determines the actuation of the proportional valve. It acts as a bridge between the command signal and the proportional valve, ensuring precise proportional control of the system. An amplifier card is an electronic circuit board that takes an input signal and generates an amplified output signal to drive a proportional valve. 

 The working principle of the hydraulic proportional valve with amplifier card is to change the opening size of the valve according to the electrical control signal. The amplifier card takes a command signal (usually in the form of voltage or current) and converts it into an amplified current signal that drives a proportional valve. This amplified signal controls the spool position of the valve, which in turn regulates fluid flow. 

 Proportional valve amplifiers enable precise control by providing a linear relationship between the command signal and the valve output. For example, a 50% increase in the command signal results in a 50% increase in fluid flow. This level of control is critical for applications that require precise proportional control of fluid flow or pressure, such as industrial automation and motion control systems. 

 As an electronic device, the amplifier card also has many advantages over traditional analog control systems. It offers enhanced reliability, repeatability and flexibility in signal processing. Modern amplifier cards often contain microprocessors for advanced functions such as signal conditioning, diagnostics, and communication functions. 

 The combination of hydraulic proportional valves and amplifier cards provides several benefits to hydraulic systems. First, it enables precise control of fluid flow and pressure, improving system performance and efficiency. Second, it enables smooth, responsive operation with minimal disturbance and vibration. Finally, it facilitates remote control and automation, making it suitable for complex systems or applications that require remote operation. 

 In summary, a hydraulic proportional valve with amplifier card is a key component in a hydraulic system that provides precise control over fluid flow and pressure. Proportional valve amplifiers play a vital role in converting command signals into proportional actuation of valves. It provides precise control, reliability and additional functions through the use of electronic circuits. The combination of these components brings numerous advantages to the hydraulic system, making it suitable for a wide range of applications across various industries.

Post time: Jul-26-2023