AC servo motor
(1) Cage type two-phase AC servo motor (slender cage rotor, mechanical characteristics are approximately linear, small volume and excitation current, small power servo, low-speed operation is not smooth enough)
(2) Non-magnetic cup rotor two-phase AC servo motor (coreless rotor, mechanical characteristics are approximately linear, volume and excitation current are large, low-power servo, low-speed operation is smooth)
(3) Ferromagnetic cup-shaped rotor two-phase AC servo motor (ferromagnetic material cup-shaped rotor, mechanical characteristics are approximately linear, rotor moment of inertia is large, cogging effect is small, and stable operation)
(4) Synchronous permanent magnet AC servo motor (coaxial integrated unit composed of permanent magnet synchronous motor, speed measuring machine and position detection element, the stator is 3 or 2 phases, and the magnetic material rotor must be equipped with a driver; The speed regulation range is wide, the mechanical characteristics are composed of constant torque area and constant power area, which can be continuously stalled, with fast corresponding performance, large output power and small torque fluctuation; There are two modes of square wave drive and sine wave drive, with good control performance and mechatronics products)
(5) Asynchronous three-phase AC servo motor (the rotor is similar to the cage asynchronous motor, it must be equipped with a driver, and vector control is adopted to expand the range of constant power speed regulation, which is mostly used in the spindle speed regulation system of machine tools)
DC servo motor
(1) Printed winding DC servo motor (disc rotor and disc stator are axially bonded with cylindrical magnets, with small rotor moment of inertia, no cogging effect, no saturation effect, and large output torque)
(2) Wire-wound disc DC servo motor (disc rotor and stator are axially bonded with cylindrical magnets, the rotor has a small moment of inertia, the control performance is better than other DC servo motors, high efficiency and large output torque)
(3) Cup-type armature permanent magnet DC motor (coreless rotor, small rotor moment of inertia, suitable for incremental motion servo system)
(4) Brushless DC servo motor (stator is multi-phase winding, rotor is permanent magnet, with rotor position sensor, no spark interference, long life, low noise)
Torque motors
(1) DC torque motor (flat structure, number of poles, number of slots, number of commutation pieces, number of series conductors; Large output torque, continuous work at low speed or stalled rotor, good mechanical and adjustment characteristics, small electromechanical time constant)
(2) Brushless DC torque motor (similar to brushless DC servo motor in structure, but flat, with more poles, slots, and more conductors in series; Large output torque, good mechanical and adjustment characteristics, long life, no sparks, low noise)
(3) Cage type AC torque motor (cage rotor, flat structure, many poles and slots, large starting torque, small electromechanical time constant, long-term stalled operation, soft mechanical characteristics)
(4) Solid rotor AC torque motor (ferromagnetic material solid rotor, flat structure, large number of poles and slots, long-term stall, smooth operation, soft mechanical characteristics)
Stepper motors
(1) Reactive stepper motor (the stator and rotor are all stacked by silicon steel sheets, there is no winding on the rotor core, and there is a control winding on the stator; Small step angle, high start and running frequency, low step angle accuracy, no self-locking torque)
(2) Permanent magnet stepper motor (permanent magnet rotor, radial magnetization polarity; Large step angle, low starting and running frequency, holding torque, less power consumption than reactive type, but must supply positive and negative pulse current)
(3) Hybrid stepper motor (permanent magnet rotor, axial magnetized polarity; High step angle accuracy, maintaining torque, low input current, and the advantages of both reactive and permanent magnet type)
Switched reluctance motor (stator and rotor are all stacked of silicon steel sheets, all of which are salient pole type, similar to the structure of the large-step reactive stepper motor close to the number of poles, with a rotor position sensor, the torque direction is independent of the current direction, the speed regulation range is small, the noise is large, and the mechanical characteristics are composed of three parts: constant torque area, constant power area and series excitation characteristic area)
Linear motor (simple structure, guide rail, etc. can be used as a secondary conductor, suitable for linear reciprocating motion; The high-speed servo has good performance, high power factor and efficiency, and excellent constant speed operation performance)
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Estun servo motor - the structural composition of the servo control system
A servo control system is a feedback control system that is used to accurately follow or reproduce a process. In many cases, the servo system refers specifically to the feedback control system in which the controlled quantity (the output of the system) is the mechanical displacement or displacement velocity and acceleration, and its function is to make the mechanical displacement of the output (or ...
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Estun servo motor - from which aspects to check the servo motor overheating
(1) The motor heat dissipation system is faulty
The temperature of the motor rises due to the heat generated by the motor not being dissipated quickly. At this time, the main solution is to check whether the cooling fan of the motor is operating normally and whether the direction of rotation of the fan is correct. The surface of the motor is ...
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Estun Robot - What should be paid attention to in the use of welding robots?
What points do you need to pay attention to when using welding robots?
1. It is necessary to teach the robot before active welding, and it is necessary for the operator to teach the track of the robot welding gun and set the welding conditions. Because it is necessary to teach, the robot is not oriented to many classes ...
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Estun servo motor - what are the control methods of servo drives
Servo drive is a kind of controller used to control servo motor, its function is similar to that of an inverter acting on an ordinary AC motor, which is a part of the servo system and is mainly used in high-precision positioning systems.
Servo drive is an important part of modern motion control, which is widely used.
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Maintenance steps for Estun palletizing robots
One: machine cleaning
First and foremost, disconnect the power supply and remove debris around the machine. Use a clean cloth to wipe the surface of the machine to ensure that it is free of dust, grease and other impurities. For the cleaning of the inside of the machine, it needs to be operated by professionals.
Two: Look at the machine parts
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Estun Medical and Burt Robot participated in the China International Medical Equipment Fair
The 2021 China International Medical Equipment Fair will be held from May 13 to 16 at the National Convention and Exhibition Center in Shanghai.
Estun Medical will exhibit the unilateral and bilateral versions of the Burt Upper Limb Rehabilitation Training System, which is more suitable for the full-cycle rehabilitation training program of the rehabilitation population, and includes adaptation ...
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Estun servo motor - the cause and solution of fast jitter of servo motor
Servo motor refers to the engine that controls the operation of mechanical components in the servo system, and is a kind of auxiliary motor indirect transmission device. The main function is to use it in a closed ring, transmit the signal to the system at any time, and at the same time correct its own operation with the signal given by the system.
Servo motor ...
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FAQs about Estun servo motor (7-10)
7. The relationship between the model code parameters and the servo motor
The motor model in the model code parameter of the EDB series servo motor should be the motor model currently controlled, otherwise the operation effect of the motor will be poor. The motor model selection parameter is PN218, and the drive model parameter selection is PN ...
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The daily maintenance method of Estun welding robot
1. Each moving part, guide rail and roller of the welding robot should be coated with grease, and the closed transmission part should be lubricated with oil to keep the parts moving flexibly; It is the maintenance of the flat center wheel and eccentric wheel parts to ensure their fastening and ensure that the cross arm movement is straight.
2. Frequently check and clean the guide rails, ...
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Estun servo – the difference between servo motor and ordinary motor
There are many types of motors, and the ordinary motor we commonly use is the induction motor, although it and the servo motor are both motors, there are certain differences:
1. The speed of ordinary motors is too fast, the torque is too small, and because there is no feedback from itself, it is usually impossible to achieve accurate control.
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Estun servo motor – the cause of overheating of servo motors
1) Excessive load;
2) Missing items;
3) Obstruction of air ducts;
4) The low-speed running time is too long;
5) The power supply wave is too large.
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Estun servo motor - what are the control methods of servo motor?
1. Torque control: The torque control mode is to set the size of the output torque of the motor shaft through the input of the external analog quantity or the assignment of the direct address, which is specifically manifested as 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 motor shaft ...
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Estun servo motor - speed regulation and shutdown of DC motor
Speed regulation of DC motors
Constant power weak magnetic upward speed regulation, the magnetic field governor can be adjusted until the speed reaches the required value, but shall not exceed the maximum speed allowed by the technical conditions. Constant torque loads can be slowed down by step-down or armature string resistors.
Downtime of the DC motor
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Estun Servo Motor - How to Select Servo Motor (16-20)
16. Is it safe to use a DC power supply voltage greater than the rated voltage value to drive the motor?
Normally this is not a problem, as long as the motor is operating within the set speed and current limits. Because the motor speed is proportional to the motor line voltage, choosing a certain supply voltage will not cause ...
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Estun servo motor - maintenance method of variable frequency motor
1. Select magnet wires with good corona resistance to meet the requirements of high-frequency pulse resistance and partial discharge of the motor.
Generally, polyesterimide/polyamideimide composite layer enameled wire is used, which is corona resistant and corona resistant magnet wire.
Second, winding, embedded wire construction technology.
Frequency conversion...
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Estun servo motor - introduction of three control methods of servo motor
1. Position mode
Look at this name, you can guess a rough idea, to put it bluntly, the position requirements are relatively high, such as the linear servo module this kind of mechanism, the need for the sliding mechanism to stop accurately, just use this mode, speaking of which, let's take a look at the ball screw module ...
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Estun servo drive alarm code analysis
Estun Server Alarm A.01 Parameter Broken
Estun server alarm A.02 A/D is damaged
Estun Server Alarm A.03 Overspeeding
Estun server alarm A.04 Overload
Estun Server Alarm A.05 Position Deviation Counter Overflow
Ace...
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Estun servo motor - the structure and working principle of AC servo motor
structure
AC servo motors are usually single-phase asynchronous motors, with two structural forms: squirrel cage rotor and cup rotor. Like ordinary motors, AC servo motors are constructed of a stator and a rotor. There are two windings on the stator, namely the excitation winding and the control winding, and the two windings are ...
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How to disassemble the five or six axes of Estun robot?
1. Open the shell of the robot to expose the motor base.
2. Use a screwdriver or wrench to remove the screws on the motor base.
3. Remove the screws, lift the motor base, and disassemble it from the robot.
4. The motor base is tightly connected with the robot, and tools such as wrenches are used.
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FAQs about Estun servo motor(11)
11. What is the principle of parameter adjustment of speed loop and position loop of servo drive?
In addition to the performance of the motor and the drive, the adjustment of the drive parameters is also a very critical factor.
The main performance parameters of the servo drive ...
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