A control method for torsional vibration of permanent magnet semi-direct drive transmission shafting caused by external excitation
A control method, semi-direct drive technology, applied in motor generator control, electronic commutation motor control, control system, etc., can solve the problems of electromechanical coupling torsional vibration of the new semi-direct drive transmission system of the cutting part, and avoid Resonance phenomenon, the effect of reducing the torsional vibration of the transmission chain
Active Publication Date: 2020-11-24
CHINA UNIV OF MINING & TECH
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[0004] The purpose of the present invention is to provide a permanent magnet semi-direct drive transmission shaft torsional vibration control method caused by external excitation, to solve the problem of electromechanical coupling torsional vibration of the new semi-direct drive transmission system of the cutting section
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Embodiment 1
[0084] Example 1: figure 1 Among them, in the actual system using the method of the present invention, the low-speed high-torque permanent magnet synchronous motor 1 is connected with the elastic torque shaft 3 of the shearer cutting part through the clutch 2, and then connected with the cutting drum 5 through the gear transmission 4. Through the above method, the driving of the permanent magnet synchronous motor to the cutting drum is realized. Then, by designing the mechanical parameters of the elastic torque shaft 2 and the electrical parameters of the permanent magnet synchronous motor 1, combined with the time-delay feedback controller, the stable operation of the shearer semi-direct drive cutting transmission system is realized.
[0085] Such as figure 2 As shown, a method for controlling the torsional vibration of the permanent magnet semi-direct drive transmission shafting system caused by external excitation in the present invention, the specific steps are as follow...
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The invention relates to a control method for permanent-magnetism semi-direct-driven transmission shafting torsional oscillation caused by external excitation, and belongs to transmission shafting torsional oscillation control methods. The control method comprises the steps that S1) an electromechanical coupling dynamic model of a semi-half-driven transmission shaft driven by a large-power permanent magnetism motor is established, and dynamic information of a system is obtained; S2) a multi-scale method is used to analyze the model to obtain relation between parameter change of an electromechanical coupling system and system torsional osccilation; S3) the stability of the system is determined during parameter change; S4) a time-lag feedback controller is constructed; S5) different parameters in the electromechanical coupling system are adjusted according to simulation effects; and S6) design is completed. The control method has the advantages that the stable intervals of the parametersand the minimal oscillation point in the electromechanical coupling system are determined and then the time lag feedback controller is designed according to the parameters, resonance between externalexcitation and the transmission system is avoided, the oscillation amplitude is reduced, the robustness of a PI closed-loop controller is improved, and guarantee is provided for reliable applicationof a low-speed large-torque permanent magnet synchronous motor (PMSM) to a cutting part of a coal cutter.
Description
technical field [0001] The invention relates to a method for controlling the torsional vibration of a transmission shaft system, in particular to a method for controlling the torsional vibration of a permanent magnet semi-direct drive type transmission shaft system caused by external excitation. Background technique [0002] In recent years, with the continuous development of coal mine mechanization, higher requirements have been put forward for the high efficiency and high reliability of fully mechanized mining equipment. Drum shearer is an important part of fully mechanized mining equipment, and the cutting part of the current drum shearer mainly adopts the transmission mode of "three-phase asynchronous motor + three-stage spur gear reduction + cutting drum". The transmission chain of the cutting part is long, and it is prone to failure under harsh working conditions, especially the planetary gear reducer at the cutting drum, which directly affects the reliable running tim...
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IPC IPC(8): H02P21/05
CPCH02P21/05
Inventor 李威姜耸王禹桥杨雪锋范孟豹许少毅盛连超王承涛陈宇鸣夏婷陈家俊李敏王越
Owner CHINA UNIV OF MINING & TECH