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The paper is devoted to the development and the investigation of scientific and practical solutions of the centering problem of the rotor spatial position of the mechatronic motion module used in high-precision processing systems. The existing and widely used methods of eliminating mass unbalances at present are considered. A new approach to solving the problem of stabilizing the rotating element...
Put forward a fuzzy control strategy of the magnetic suspension bearing's rotor, and combined with the operating principle of electromagnetic winding, achieve control of the rotor displacement through fuzzy self-tuning PID nonlinear real-time control. Improve the dynamic and static performance of nonlinear systems.
The active magnetic bearing AMB presents a solution for all technical problems since it ensures the total levitation of a body in space eliminating any mechanical contact between the rotor and the stator. The goal of our work is to show that the control of the AMB by Multilayer perceptrons MLP involves an improvement of the response compared to the control of the AMB by classical controllers. The...
A dynamic decoupling control approach based on inverse system theory is developed for the electric spindle system supported by 5 degree-of-freedom (DOF) AC active magnetic bearings(AMB), which is multi-variable, nonlinear and strong coupling system. The state equations of the 5-DOF AC AMB are set up based on the configuration of 5-DOF AC AMB being introduced and mathematical models of axial and radial...
According to the magnetic suspension character of the rotor in the new type of gyro, the control mathematic model for the gyro's rotor magnetic suspension system is founded. The system is characterized by its instability ' nonlinearity. In this paper, a variable structure controller is designed. Based on the general variable structure controller theory, the design of switch function using the method...
The vibration originated from the rotor's unbalance mass impacts on the current oscillation. As the rotor rotating at high speed, Power amplifier circuit will be burned down by excessive control current. While vibrating force transfers to frame, which causes the system vibration and influence the dynamic properties and safe operation. So unbalance compensation on the rotating machine is necessary,...
In order to raise or guarantee the precision and dynamic stiffness of AMB spindle units mounted on the complex structures, a new method called relative and absolute hybrid motion control is advanced. The model of multi-degree of freedom (MDOF) system was built and analyzed, the natural frequency and modal shapes were calculated. The hybrid control system of the base structure-AMB-rotor system was...
The application of the slide-mode observer in the sensorless vector-control of permanent magnet synchronous motor (PMSM) is proposed. Design a slide-mode observer to estimate the information of rotor position. Establish the adaptive rule and analysis the stability of the slide-mode observer. The application of the space vector pulse width modulation (SVPWM) is introduced in the control scheme of the...
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