The invention discloses an active magnetic suspension
control system and control method for a three-floated gyro. The active magnetic suspension
control system comprises a magnetic suspension element, a first floater position detection
resistor group, a second floater position detection
resistor group, an
analog signal conversion circuit, a multipath gating device, a controller, a first excitation / stressing
control switch block and a second excitation / stressing
control switch block, wherein the magnetic suspension element, the first floater position detection
resistor group and the second floater position detection resistor group form five paths of Wheatstone test bridges. According to the control method disclosed in the invention, the
control period of the controller is divided into a position
signal sampling period Tc, a stressing period Tf and a restore and
waiting period Td. With the
control system and method, five
degrees of freedom of the floaters of the three-floated gyro can be controlled, and precision and centering of the three-floated gyro can be realized. The control
system controls displacement of the magnetic suspension element through single-side magnetic pole stressing and employs a state decoupling control method, so precision of the three-floated gyro can be improved.