摘要：Polygonal coil systems are designed for increasing and more kinds of sensors and electromagnetic *** paper presents a method for calculating mutual inductance between polygonal coils including irregular *** on the Biot-Savart law,the method calculates mutual inductance by dividing a polygonal coil into finite wires,and expresses the magnetic induction intensity generated by the excitation coil as a function of the spatial position of each vertex of the *** calculation method of the feasible region of the objective function is updated and the calculation process is simplified,so the calculation accuracy is *** octagon coils arbitrarily positioned in space,the accuracy of the algorithm is verified by the simulation and experiment.