System and method for controlling valve

A method for controlling a valve disposed in fluid communication with a fluid circuit, the method comprising:

• determining a measured flow of fluid flowing from the fluid circuit to the valve;
• determining a measured pressure of fluid flowing from the fluid circuit to the valve;
• determining a desired flow based at least on the measured pressure, the measured flow, and a target pressure;
• determining a flow error as a difference between the desired flow and the measured flow;
• determining a desired position of the valve based on the flow error, such that the flow error is reduced;
• determining an actuating electric parameter based at least on the desired position of the valve;
• and
• applying an actuating force on the valve based at least on the actuating electric parameter.

A valve system for use with a fluid circuit, the valve system comprising:

• a valve comprising:
• a valve housing defining an inlet port disposed in fluid communication with the fluid circuit and an exhaust port disposed in fluid communication with an environment external to the valve;
• and
• a valve body at least partially received within the valve housing and movable relative to the valve housing, wherein the valve body is configured to control fluid flow between the inlet port and the exhaust port;
• a flow sensor configured to determine a measured flow of fluid flowing from the fluid circuit to the inlet port of the valve;
• a pressure sensor configured to determine a measured pressure of fluid flowing from the fluid circuit to the inlet port of the valve;
• an adaptive controller communicably coupled to the flow sensor and the pressure sensor, wherein the adaptive controller is configured to:
• receive signals indicative of a target pressure, the measured flow, and the measured pressure;
• determine a desired flow based at least on the measured pressure, the measured flow, and the target pressure;
• determine a flow error as a difference between the desired flow and the measured flow;
• and
• determine a desired position of the valve body based on the flow error, such that the flow error is reduced;
• a position controller communicably coupled to the adaptive controller, wherein the position controller is configured to determine an actuating electric parameter based at least on the desired position of the valve body;
• and
• a valve actuator communicably coupled to the position controller, wherein the valve actuator is configured to apply an actuating force on the valve body based at least on the actuating electric parameter in order to control fluid flow from the inlet port to the exhaust port.