What is the reason why the servo motor is not accurate?

You can check the following from the following aspects: 1. If there is a precision requirement, it is best to choose a high-precision servo motor.

Many people are easy to misunderstand that the motor accuracy of servo motor brands on the market is very high.

2. Encoder.

The accuracy is not enough, and the positioning is not accurate, so the servo motor is not accurate.

3. Whether there is a strong magnetic field or interference in the environment, the position is inaccurate.

4. The servo has three bad, torque ring, speed ring, and position ring, and you should use the position ring to control the best in this case.

To analyze the specific situation, it is possible: 1. The encoder feedback is not accurate 2. The motor load end adopts a V-belt and other connections that will slip 3. The PLC control program calculation is not accurate, etc.

There are several possibilities for the servo motor to be inaccurate: the control pulse is disturbed, resulting in multiple receiving control pulses, or the control pulse bandwidth of the servo drive is insufficient, resulting in the missed reception of the control pulse, and the parameter debugging is not suitable, resulting in a relatively large or large tracking error.

What motor is used, permanent magnet synchronous, stepper or something else? Is it a light edge or a magnetic edge?

1. The quality of the servo motor is not good.

2. The bearing accuracy of the servo motor is not enough, which causes too much fluctuation when the motor rotates, 3. The unstable signal of the servo motor drive leads to unstable speed, etc.

Servo occasions are personally recommended to use good brand servo motors, such as Jared servo motors, ** is expensive, but other equipment is not stable and reliable.

1) In the first case, it is the fuse.

Burn it. In this case, the motor is OK after replacing the fuse, and the repair cost of this fault is also minimal.

2) The second case is that the power switch is broken, replace the power switch. Judgment method: Turn on the power switch and use a multimeter.

The ohmic gear measures the resistance between the input and output of the power switch, if the resistance value is zero, it is normal, if the resistance value is infinity, the power switch is broken, and the power switch should be replaced.

3) The third is that the Hall position sensor is broken. The specific diagnosis method is to use the multimeter DC voltage to measure the output voltage of the green line at the output end of the handlebar, if there is a voltage output, the handle is normal, if there is no voltage output, the handle burns out, and the handle needs to be replaced.

4) Bad controller. Use the multimeter DC voltage level to measure the red wiring at the output end of the controller (the plug of the adapter wire), if there is a voltage output of about 5 volts, the controller is normal, if there is no voltage output, the controller is burned out, and the controller needs to be replaced.

5) If the connectors of the motor are loose, check each connector again. It may also be that the battery box is not in place when it is placed in the frame, and the contacts are not in good contact.

6) The last case is that the motor burns out. Disconnect the motor from the controller, connect the rest of the wires, slowly rotate the motor, measure the Hall line with a multimeter to see if the signal has a voltage change, if there is no change in phase, it is the motor Hall element burned off, resulting in a lack of phase, and the motor needs to be replaced. This situation is also the most expensive to repair.

The number of pulses is too small, the frequency is too low, the electronic gear ratio is not right, the hard or soft limit is exceeded, etc.

Summary. If the servo motor is not in the right position. It is better to choose a high-precision servo motor.

If the servo motor is not in the right position. It is better to choose a high-precision servo motor.

Under normal circumstances, the accuracy of the encoder is not enough, and the positioning is not accurate, so it is difficult for the servo motor to be in place.

Of course, this can also happen when there is a strong magnetic field in the environment.

Therefore, you have to judge and exclude according to your actual situation.

Why can the feeding motor still twist back and forth when the feed motor is energized?

Only with servo enabled However, the locking force is not very large, and if you want to make sure that the output shaft is locked, then you should use a servo motor with brakes. Above.

It is likely that the UVW is connected to the wrong one.

Hello. Hello dear.

Can the driver adjust the parameters of the motor?

Does the hinge hold on when the power is on?

For servo drives, the maximum pulse (differential input) that can receive 500 kHz is 200 kHz collector input. The torque output of the motor is determined by the load, and the larger the load, the greater the torque output of the motor, of course, it cannot exceed the rated load of the motor. Rapid acceleration and deceleration or overload caused by the overcurrent of the main circuit will affect the power device, so the servo amplifier is set with an embedded circuit to limit the output torque, and the limit of the torque can be adjusted by analog or parameter settings.

1. Position proportional gain sets the proportional gain of the position ring adjuster; The higher the setting value, the higher the gain, the greater the stiffness, and the smaller the position lag under the same frequency command pulse. However, too large a value may cause oscillation or overshoot; The parameter values are determined by the specific servo model and the load situation.

2. Position feedforward gain sets the feedforward gain of the position ring; When the set value is larger, it means that the position lag is smaller under any frequency of command pulses. The feedforward gain of the position loop is large, and the high-speed response characteristics of the control system are improved, but the position of the system is unstable and easy to oscillate. When a high response characteristic is not required, this parameter is usually set to 0 to indicate the range: 0 100%.

3. Speed proportional gain: set the proportional gain of the speed regulator; The higher the setting value, the higher the gain and the greater the stiffness. The parameter values are determined according to the specific servo drive system model and load value. In general, the larger the load inertia, the greater the set value; Under the condition that the system does not oscillate, try to set a large value.

Hello, the above parameters are the parameters that can be adjusted on the drive.

1. There is an open circuit in the rotor winding (one-phase disconnection) or one-phase power loss of the power supply;

2. The beginning and end of the winding lead wire are connected incorrectly or the winding is reversed;

3. The contact of the power supply circuit is loose and the contact resistance is large;

4. The motor is overloaded or the rotor is stuck;

5. The power supply voltage is too low;

6. The servo motor is too tightly assembled or the grease in the bearing is too hard;

7. The bearing is stuck.

Solution: 1. Identify the breakpoint and fix it;

2. Check the polarity of the winding; Judge whether the end of the winding is correct;

3. Tighten the loose wiring screws, use a multimeter to judge whether the joints are falsely connected, and repair them;

4. Reduce load or detect and eliminate mechanical faults;

5. Check whether the specified surface connection method is misconnected, or whether the voltage drop is too large due to the thin power wire, and if so, it should be corrected;

6. Re-assemble to make it flexible, and replace qualified grease;

7. Repair bearings.

1.Insufficient strength of transmission components: transmission components such as transmission wheels, reducers, pulleys and drive chains, etc., if the strength is insufficient, they may be used under high loads, which may cause the positioning of the servo motor to deviate.

2.The control system is unstable: the stability of the control system directly affects the positioning accuracy of the servo motor, if the control system is unstable, the accuracy will be affected and the positioning deviation will be caused.

3.Wear and tear: The transmission parts are usually working under high loads, such as the transmission wheel is often in the gear to produce no wheel source ear wear, and the reducer will also be worn, which will affect the positioning of the servo motor, so that the positioning is offset.

4.Failure performance degradation: Due to the existence of external interference factors, the problem of servo motor attenuation or fault performance degradation will cause positioning deviation.

5.Defects in the drive circuit: Insufficient power supply or large jitter values may lead to defects in the drive circuit, and may also lead to deviation in the positioning of the servo motor.

In addition, the elimination method of positioning offset is also important for premature cracking. The transmission components and control system should be checked regularly to ensure that their performance is normal, the current drive is coordinated, the controlled and constant speed is ensured, and the algorithm control of the overall system should be strengthened to ensure the accuracy of the servo motor positioning.

The reasons and solutions for the servo motor not being enabled are as follows: 1) The first situation is that the fuse is blown out. In this case, the motor is OK after replacing the fuse.

2) In the second case, the power switch is broken, and the power supply silver switch is replaced. Judgment method: turn on the power switch, use the multimeter ohmic file to measure the resistance between the input end and the output end of the power switch, if the resistance value is zero, it is normal, if the resistance value is infinite, the power switch is bad, and the power switch should be replaced.

3) In the third case, the Hall position sensor is broken. The specific diagnosis method is to use the multimeter DC voltage to measure the output voltage of the green line at the output end of the handlebar, if there is a voltage output, the handle is normal, if there is no sharp skin voltage output, the handle burns out, and the handle needs to be replaced. 4) Bad controller.

Use the multimeter DC voltage to measure the red wiring at the output end of the controller (the plug of the handle wire), if there is a voltage output of about 5 volts, the controller is normal, if there is no voltage output, the controller burns out, and the controller needs to be replaced in the grip state.