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The decoupling control method of permanent-magnet synchronous motor(PMSM) is proposed by using exact linearization via state variable feedback. The exact linearization conditions of multi-input and multi-output are discussed with differential geometry method based on the mathematic model of PMSM. The PMSM linearization and decoupling controller design are(More)
The mathematical model of brushless dc motor system (BLDCMS) is proposed. First, the BLDCMS is researched including the motor, inverter and controller. The key mathematical model of inverter drive circuit is established by introducing an impulse function and Fourier transform. This mathematical model converted current loop output voltage into actual PWM(More)
The method of solving the time-delayed parameter difficult choice in controlling chaos was proposed in this paper. The fuzzy control method was applied into chaotic control by time-delayed feedback. The quadrature-axis stator voltage was used as the manipulated variable. The input of the fuzzy controller was the system error. Fuzzy controller searched the(More)
—The non-interacting control method of permanent-magnet synchronous motor(PMSM) is proposed by using exact linearization via state variable feedback. The conditions of exact linearization are discussed with differential geometry method based on PMSM mathematic model. The PMSM linearization and non-interacting control design had been completed in the entire(More)
The aim of this study was to analyze the viability of using an acellular dermal matrix (ADM) as a reinforcement material for peripheral corneal thinning disease. The complete removal of cell components was confirmed by hematoxylin and eosin (H&E) and 4',6-diamidino-2-phenylindole (DAPI) staining. Transmission electron microscopy determined that the stromal(More)
To solve the shortcomings of large dependence on the parameters and need accurate cancellation the dynamic when using exact linearization method to nonlinear system, this paper introduced the Kalman filter to linear decoupling control to observe the load torque change of induction motor. At the same time, use reactive power model based on MRAS to(More)
The problem of the delay-time parameter difficult to be determined in controlling chaos was considered in this paper. The quadrature-axis stator voltage was used as the manipulated variable. Applied the fuzzy control method into chaotic control by time-delayed feedback. The input of the fuzzy controller was the difference between the feedback of output and(More)
This paper analyzed and calculated electromagnetic field and counterbalance force between the permanent magnet thrust plate for a novel permanent magnet axial thrust balance structure in canned motor pump using a numerical method of Ansoft software. Then constructed permanent magnet axial thrust balance experiment device and detected the characteristics of(More)
This paper analyzed and calculated electromagnetic field and counterbalance force between the permanent magnet thrust plate for a novel permanent magnet axial thrust balance structure in canned motor pump using a numerical method of Ansoft software. Then constructed permanent magnet axial thrust balance experiment device and detected the characteristics of(More)
This paper provided a novel magnet arrayed permanent magnet synchronous motor with self-starting function and high efficiency. The magnetic pole which is affixed in rotor surface is composed of a number of small array magnetic blocks; its width, height and the interval between arrayed magnets meet a modulation relationship. So magnetic field generated by(More)