Control method, control system and electric valve

A control method for controlling an electric valve, wherein the control method comprises:

• obtaining a setting required position according to a required setting parameter and a required setting parameter curve, and acquiring a setting actual position according to the setting required position and a position mapping curve;
• and
• controlling the electric valve to run toward the setting actual position of the electric valve;
• wherein
• the position mapping curve is pre-stored in a control system used for controlling running of the electric valve, the position mapping curve varies with an actually measured setting parameter curve and the required setting parameter curve, and both the actually measured setting parameter curve and the required setting parameter curve represent a corresponding relationship between a position of the electric valve and a setting parameter;
• and
• the position mapping curve is obtained by fitting the actually measured setting parameter curve and the required setting parameter curve, and a difference value between a setting parameter corresponding to an abscissa of a point on the position mapping curve and a setting parameter corresponding to an ordinate of the point on the position mapping curve is less than a setting difference value.

A control system for controlling an electric valve, wherein the control system comprises:

• an actual curve acquisition module, configured to acquire an actually measured setting parameter curve;
• a required curve acquisition module, configured to acquire a required setting parameter curve, wherein both the actually measured setting parameter curve and the required setting parameter curve represent a corresponding relationship between a position of the electric valve and a setting parameter;
• a fitting module, configured to fit the actually measured setting parameter curve and the required setting parameter curve to acquire a position mapping curve, wherein the position mapping curve represents a corresponding relationship between an actual position of the electric valve and a required position of the electric valve, and a difference value between a setting parameter corresponding to an abscissa of each coordinate point on the position mapping curve and a setting parameter corresponding to an ordinate of the each coordinate point on the position mapping curve is less than a setting difference value;
• an actual position acquisition module, configured to obtain a setting required position according to a required setting parameter and the required setting parameter curve, and acquire a setting actual position according to the setting required position and the position mapping curve;
• and
• an electric valve control module, configured to control the electric valve to run toward the setting actual position of the electric valve.