1).Servo motor detection -- cogging torque:
Cogging torque is an inherent phenomenon of permanent magnet motor, which can make the motor torque fluctuate and produce vibration and noise. We measure the change of motor torque in a rotation cycle on a special test bench and analyze the distribution of cogging torque.
2).Servo motor detection - torque ripple:
Under the condition of given speed and torque, the servo system measures and records the output torque of the motor in one circle, finds out the maximum torque and minimum torque, and calculates the torque fluctuation coefficient.
3).Servo motor detection--response time of torque / speed change
Speed:
The speed response time is one of the key indexes to evaluate the servo driver. Under the condition of no-load, the servo system inputs the step signal to the speed command, and obtains the time response curve of the step input.
4).Torque:
The torque response time is one of the key indexes to evaluate the servo driver. When the servo system is in normal operation, the sudden loading or unloading of the motor can affect the time response of sudden loading.
5).Servo motor detection--position tracking error
The position tracking error of servo system includes steady position tracking error and dynamic position tracking error. The driver works in position control mode and measures the margin between position command value and position feedback value.
6).Servo motor detection--bandwidth:
Bandwidth is an important index of servo system, which reflects the response speed and anti-interference ability of servo system.
When the driver works in the speed mode and the sine wave speed command is input, it will measures the 90 °phase shift bandwidth or - 3dB bandwidth of the servo system.
03/02/2021
1).Servo motor detection -- cogging torque: Cogging torque is an inherent phenomenon of permanent magnet motor, which can make the motor torque fluctuate and produce vibration and noise. We measure the change of motor torque in a rotation cycle on a special test bench and analyze the distribution of cogging torque.
03/02/2021
Confirmation of speed and encoder resolution. Conversion of load torque on motor shaft and calculation of acceleration and deceleration torque.
03/02/2021
Torque control: the torque control mode is to set the external output torque of the motor shaft through the input of external analog quantity or the assignment of direct address. For example, if 10V corresponds to 5nm, when the external analog quantity is set to 5V, the output of the motor shaft is 2.5nm: if the load of the motor shaft is lower than 2.5nm, the motor will rotate forward, and when the external load is equal to 2.5nm
03/02/2021
1)At high speed, the speed is proportional to the voltage 2) At low speed, the voltage is lower than the decrease of speed;
03/02/2021
Machine tool manufacturing - lathe, planer, grinder, machining center, gear making machine, milling machine, etc Automobile manufacturing - engine parts production line, vehicle assembly line, engine assembly line, body welding line, testing equipment, etc Casting manufacturing - manipulator, converter tilting, mold processing center, etc
03/02/2021
Advantage: (1) No brush, low interference When the brush is removed from the brushless motor, the most direct change is that there is no electric spark generated when the brushless motor is running, which greatly reduces the interference of electric spark to the remote control radio equipment.
03/02/2021
The diameter of hollow shaft can reach 40mm Compact size IP65 protection level Low rotor moment of inertia, high dynamic response characteristics
03/02/2021
ABB motor is a kind of electromagnetic device which realizes the conversion or transfer of electric energy according to the law of electromagnetic induction ABB servo motor is installed as follows:
03/02/2021
The connection of the servo motor using Arduino is as follows: Connect the black wires on the two servo motors to the GND on the Arduino Connect the red wires on the two servo motors to the 5V pin on the Arduino Connect the yellow wire on the first motor to pin 8 on the Arduino
03/02/2021
1.Positioning or residual torque: when there is no current passing through the winding, the torque required to make the output shaft of the motor rotate. 2.Driver: an electrical control device used to run the stepping motor. This includes power supply, logic programmer, switching element and a variable frequency pulse source which determines the step rate. 3.Dynamic torque: the torque produced by the motor at a certain step rate. The dynamic torque can be expressed by PULL IN torque or PULL OUT torque.
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