with hysteretic non-linear actuator of the vibration isolation system

Title: with hysteretic non-linear actuator of the vibration isolation system Author: Pan deposit rule Degree-granting units: Beijing Jiaotong University Keywords: isolation;; semi-active control;; hysteresis;; magneto-rheological damper;; electromagnetic actuator;; delay compensation;; sliding mode concept Abstract:
Vibration control is an important Strong magnets branch of vibration control, vibration control theory and technology has matured and has been widely used. Close
Years, with the increased vibration control requirements and the emergence of new actuators, actuator dynamics and nonlinear problems for controller design
And synthesis of the difficulties and challenges brought by domestic and foreign scholars have begun to be valued, which is the most difficult non-linear hysteresis loop of a class of nonlinear
. In this paper, the National Natural Science Foundation (10472073) "controlled delay element with dynamic behavior control of nonlinear systems" and the River
North Provincial Natural Science Foundation (E2005000507) "controlled delay element based vibration control system robust stability and control of nonlinear behavior
System "support, the MR damper-based semi-active vibration isolation system and the electromagnetic actuator based active vibration isolation system, for example, focus on test
Taking into account the actuator dynamics http://www.chinamagnets.biz/Neodymium/Ball-Neodymium-Magnets.php and hysteresis nonlinearity, the vibration control of a number of issues were discussed. The main work and academic papers
Contributions are:
1, the design of the actuator performance test systems, the actuator dynamics and hysteresis nonlinearity of the experimental study
. Among them, the magneto-rheological damper experimental results show that the damping force is not only the amplitude and the relative speed and frequency, but also with the excitation power
Current amplitude and frequency; of electromagnetic actuator experimental results show that the actual system, the electromagnetic force and electromagnetic excitation current, air gap of
The static relationship between the electromagnetic force is not to follow the formula given in the ideal theoretical model, the electromagnetic force and the excitation current between the apparent rate
Not related to the phenomenon of hysteresis, and electromagnetic force and the air gap between the hysteresis relationship is not obvious.
2, in the literature and experimental analysis, based on the
Magneto-rheological damper on an electromechanical coupling model proposed to introduce a modeling idea, given the model parameters to determine method; the model's main
Characterized the mechanical response to the electromagnetic response and dynamic process of separation and the damping force, said that with the smooth approximation of the Bingham model with coupling
Together, with no significant displacement of the model variables. Taking into account the electromagnetic actuator with hysteretic non-linear dynamics to study the bi-directional electromagnetic actuator hysteresis
A description of non-linear model of uncertainty; complete model of the electromagnetic actuator is electromagnetic force field dynamic hysteresis model and nonlinear model
Coupler is made.
3 to study the MR damper-based semi-active vibration isolation system, a number of switch control strategy, and the vibration isolation system
Switching strategy of isolation of a simulation comparing the effect that the strategy of switching characteristics and applicability. In addition, for the sampling control
System caused by the delay to study the time delay compensation technology, and improved switching strategy, simulation analysis of the effectiveness of delay compensation strategy
.
4, electromagnetic actuator based active vibration isolation system for a sliding mode control study. Were used to describe the power of two
Magnetic actuator hysteresis nonlinear model, one is the author's non-linear hysteresis model uncertainty description, and the second is the Bouc-Wen model
Type; study the rate of sliding mode control of vibration isolation system, and the transient vibration and continuous vibration isolation effect of the simulation.

5, the developed MR damper vibration simulation system, the preparation of the related monitoring and control software for semi-active control strategy of the real switch
To control experimental study to test the sampling rate on the vibration isolation effect. Experimental analysis shows that the switching strategy in the vicinity of resonance frequency
Significant isolation effect, at higher frequencies, the effect is less than the passive vibration isolation control; when the sampling frequency is too low, vibration isolation effect of variation, high frequency evil
Of the more apparent. Qualitative trend is consistent with the computer numerical simulation. Degree Year: 2009