永磁同步電動(dòng)機(jī)英文翻譯(文件)
【正文】 ,the model reference adaptive depends mainly on the accuracy of the adjustable model,the stable operation of the system plays a decisive role addition,the adaptive control law parameters tuning is a difficult problem,the control accuracy of the control system has a great impact. state observer based controlControl based on state observer is developed based on the modern control theory,observer based on the mathematical model of permanent magnet synchronous motor,used for each observation control system and the state,thus extracting speed is also dependent on the accuracy of the motor model,the appearance of large error will run at low speed or increasing temperature leads to the variation of motor parameters,so as to bring large deviation to control. intelligent controlThe use of intelligent algorithms,intelligent control of the control system, such as fuzzy control,neural network control,selftuning parameters and so on,through one or several times after the trial operation, automatic parameter tuning out,to realize the optimization control has many advantages,especially in the motor is multi variable,nonlinear control system,however,control and its performance depends on the control object,that is to say not every control system can achieve good control,which require the same time,the large amount of putation,but also has certain requirements for the controller.Synchronous Motor because of having power factor higher run – time efficiency higher , stability good, the revolving speed settles to wait a merit, is extensively been applied to industrial production amid. The starting fault that acquaints with synchronous motor, and debugging in time, all have important meaning to the motor and the production systems . By way of energy in time, accurate debugging and transaction fault, have the familiar fault progress of the synchronous motor in detail analytical!2 Familiar fault The synchro motor after switching on electricity the incapability startsThe synchro motor after starting the incapability run time generally has the reason of severals as follows:(1)Power supply voltage over at the square of voltage, the starting torque direct proportion of synchro motor39。s canning not start, vs settle the rotor fault can be shaken table with the low tension, gradually click to check to seek a fault condition and adopt homologous treatment。Check loop resistance, put out whether crystal gate tube of magnet burns out or brokes through.(4)Mechanical trouble. Such as be dragged along a dynamic machinery to block, result in motor incapability39。s current is lower than a rating value, cause the electricity magnetic troque of dynamo over small but can not lead long into synchronization, at this time in response to scrutiny Li magnetic belt device of throw Li link and phase shifting link, waveform use oscillo graph to check to throw Li link and phase shifting link, should also check and put out magnetic belt link and put out crystal gate of magnetic belt whether tube discovers a question as usual, handle in time, if the incapability handles in time, by way of the energy quickly restore capacity, should replace to provide for use circuit board. Brush and press tightly spring and gather to give or get an electric shock ring fault.The brush leads short and presses tightly spring press scarcity and make brush and gather to give or get an electric shock ring of indirectly touch badly, thus generate spark or arc electric, arc electric or spark to on the other hand and easily spark short circuit, will make arc electric burn on the other hand shorter, spark open circtui thus, result in Li magnetic belt device only the Li magnetoelectricity press but have no Li magnetoelectricity streaming。s roughness hits of the ums of and bees bad anti to finally polish with the sandpaper 23 times over the mms. The damper winding breaks down.The damper winding of synchro motor rotor is provided for synchro motor starting to use and wipe out run time at the same time amid spark because of loading to change of out of step the damper winding in the process to incise the magnetic field of stator revolution but induced very big starting current in the synchro motor, so the big current by all means will result in damping hair thermal expansion, unde
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