Servo motor & # 8203; Where several conditions will form the servo motor vibration? How to deal with the servo motor vibration problems? How to deal with is respectively? For example: the deceleration time setting is too small, servo motor when a sudden start may suspend high inertia vibration branch of attack. 。 。 。 。 。 Respectively the deceleration time up to deal with this problem. Selection below to pick up a net friend of servo motor vibration reason carries on the analysis, for everybody to understand learning: idea 1: the attack vibrate when servo motor at zero speed, gain should be set up, to reduce the gain value. If start it vibrate the parking to call the police, is the greatest possible motor phase sequence is not correct. Idea 2:1, PID gain control is too large, easy cause of motor vibration, especially after combined with D, particularly serious, so try to increase the P, cuts, I had better not D. 2, the encoder wiring wrong conditions may also be present. 3, load inertia big, replace the bigger motor and drive. 4, analog input port trouble cause fibrillation, input line and the circular on motor and servo drive power input lines, signal lines from the power line. 5, there is a kind of rotary encoder interface motor, grounding is bad situation is simple form sensation. Using the standard power cable, encoder cable, control cable, cable with and without damage; See if adjacent whether there is any trouble source control line, and the adjacent large current power cable parallel to each other or apart too close; See if there are any more attacks earthing terminal voltage change, to ensure the grounding outstanding. Servo gain setting is too big, advocate using manual or active methods from adjusting servo parameters; Admit velocity response filter time constant set, the initial value is 0, the setting of the test may be enlarged; Electronic gear is set too big, restoring to the factory Settings; Test of servo system and mechanical system resonance, adjust the notch filter frequency and amplitude. Connect the motor shaft and equipment system coupling migration, device not tighten the screw; Pulley or gear bite bad can also lead to load torque change, no-load running test, if no-load running as normal to see if there are any more abnormal combination part of mechanical system; Admit the load inertia, torque and rotational speed is too large, no-load running test, if no-load running normal, lighten the load or replace the larger capacity drives and motors. Four concepts: servo motor vibration by the mechanical structure, speed loop, the compensation of the servo system and servo amplifier, load inertia, problems caused by electrical parts. 1. Mechanical structure caused tremor can be divided into two conditions: 1)Idle chatter: a. , motor foundation stiffness or fixed not tight enough. b。 Fan blade is damaged, destroyed the balance of the mechanical rotor. c。 Machine shaft winding or crack. But after fastening screws, replace the fan blade method, replace machine shaft, etc. 2)If after add load vibrate, generally is caused transmission problem, can determine the following parts exist disadvantages: a. Tape or coupling rolling imbalance. b。 Coupling center line, make the motor and the transmission of mechanical axis misalignment. c。 The transmission belt joint imbalance. But after proofreading transmission methods such as the balance of the processing. 2. Speed loop problem caused tremor: speed loop integral gain, share of speed loop gain, acceleration response gain parameters, such as wrong. The gain is, the greater the speed, the greater the inertia force, the greater the error is smaller, the more prone to vibrate. Set a smaller gain can maintain speed echo, not easy to attack. 3. The compensation of the servo system of plate and the servo amplifier problems caused tremor: electric motor electrical suspended, dropped in attack very vibrate, and servo amplifier BRK terminals and wrong about the setting parameters. Can increase the time constant acceleration and deceleration, slow start or stop motor with PLC do not vibrate. 4. Load inertia caused tremor: guide and screw present problems increase load caused by inertia. Guide rail and ball screw rolling moment of inertia of a great influence on the rigidity of the servo motor drive system, fixed gain, rolling moment of inertia, the greater the rigidity, the greater the more easy cause of motor vibration; Rolling moment of inertia is smaller, the smaller the rigidity, the motor is not easy to vibrate. After replace the smaller the diameter of the guide rail and screw rolling inertia and thus decrease the load inertia to achieve motor do not vibrate. 5. Electrical part caused tremor: a. Open, no response from braking voltage instability caused by elements such as. Check to see if the brake turn, after vector control and encoder zero servo function, use the method of the torque output reduction must handle fibrillation of torque. Response to abnormal voltage should be check to see if the period of oscillation is associated with speed, if relevant, should check whether there is something wrong with the connection of spindle and the spindle motor, spindle and in communication pulse attack, whether at the end of the spindle motor damage, etc. , if not, you should check whether the defect on printed circuit board, needs to check the circuit board or adjustment from the beginning. b。 Suddenly vibrate during motor operation, mostly in the form of lack of phase formation, should check whether the fuse melts fusing, mainly switch touch is exceptional, and measure if there is a electric power grid in each phase. With the concept of net friend to a servo motor running if you have a general understanding of the causes of vibration when? Encounter this kind of condition, can according to the netizen notions of analyze the reasons of the screen, the other, always can also pay attention to these problems, to prevent the servo motor vibration during operation.
