Initial value prediction iterative learning fault diagnosis algorithm of electromechanical control system
A fault diagnosis algorithm and electromechanical control technology, applied in the general control system, control/adjustment system, test/monitoring control system, etc., can solve the problems of increasing the number of fault estimation iterations of fault diagnosis and low efficiency of fault diagnosis process
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[0122] The specific embodiments of the present invention will be further described below in conjunction with the accompanying drawings.
[0123] For the electromechanical control system of an actuator unit failure in the form of formula (1), when the armature resistance R a =2.1Ω, rotor moment of inertia J=1kgm 2 , armature inductance L a =800mH, counter electromotive force coefficient C e =0.18V / (rad / s), motor shaft mechanical damping coefficient C f =1.07×10 -3 Nm / (rad / s), torque coefficient C M =0.646Nm / A, use the armature current, motor speed and input voltage to construct the discrete state space equation of the electromechanical control system in the form of formula (2), and then select the sampling period T according to Shannon sampling theorem s = 0.2s, at the same time adopt the zero-order hold method to discretize the electromechanical control system, the discrete state space equation in the form of formula (3) can be obtained, and each parameter matrix is:
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