Opening control method of electric ball valve and control circuit
An electric ball valve and control method technology, applied in valve details, valve devices, engine components, etc., can solve the problems of inability to achieve opening positioning, difficult to accurately control flow, etc., to achieve precise positioning and control, eliminate rotation errors, and ensure The effect of precision and reliability
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[0028] The present invention will be further described below in conjunction with accompanying drawing:
[0029] The invention provides a method for controlling the opening of an electric ball valve, which includes the following steps:
[0030] (1) Install three permanent magnets K1, K2 and K3 clockwise on the shaft of the ball valve at intervals of 90 degrees. Magnetic sensors P1, P2 and P3;
[0031] (2) At intervals of 1 degree, establish a mapping table MapTable between the rotation angle α and the ball valve opening K in the interval [0,90];
[0032] (3) Set the opening accuracy 1 / Kd of the ball valve, and calculate the positioning angle Angi of each opening according to the linear interpolation method based on the opening accuracy 1 / Kd of the ball valve, where 0
[0033] (4) According to the positioning angle Angi of each opening degree, Kd-1 magnetic inductors PTi are relatively evenly installed in three 90-degree areas in the clockwise direction ...
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