The design of PM803F 3BDH000530R1 is based on the principle of artificial neural network and adopts the back propagation algorithm. This design mainly stems from the fact that the characteristic parameters of the electric actuator will change under different loads and different valve position segments, and the PAT module determines the control effect of the electric actuator and corrects the characteristic parameters in time according to the control effect, so as to achieve the optimal control. When the load is large, the corresponding deadband and threshold are smaller than in the case of no load, Ton is longer than in the case of no load, and Toff is shorter than in the case of no load. In this case, the PAT module can intelligently judge the reasonableness of the set parameters (see Figure 2, the intelligent processing of the Ton pulse is too long is similar, and will not be described in detail) and make timely adjustments to ensure that the optimal control is achieved.

PM803F 3BDH000530R1 in practical applications, accidents and special circumstances occur from time to time, such as some valves do not have a valve limit limit switches, then the limit of the PAT module interlocking protection function will lose its role. By judging whether there is a corresponding change in the valve position when the module is driving the output, it can be judged whether the electric actuator has reached the limit or is in a blocking state so that the output can be cut off in time to prevent the motor from burning out.

The valve positioner of PM803F 3BDH000530R1 electric actuator is also a fragile device, and the valve position feedback line breaks from time to time. These accidents can cause the valve position collected by the PAT module not to reflect the actual value of the valve position. In actual use, the valve position value of the electric actuator as the inner loop of the controlled quantity, while the controlled gas flow or liquid flow, etc. as the outer loop of the controlled quantity, at this time the inner loop is in the open circuit state, the PAT module will automatically closed-loop control switched to the state of the hard manual operation, the user can be based on the outer loop of the controlled quantity through the PAT module to achieve the electric actuator of the hard manual operation, so as to ensure the normal operation of the entire circuit.