Month: November 2018 (Page 1 of 2)

dc brushless motor: applied in solar plus washing machines

dc brushless motor technology from Dawlance is compatible with all 12 volt DC output sources. Because of its “dc brushless motor” technology, the technology is truly differentiated and promises to bring huge benefits to consumers.
dc brushless motor is more efficient in terms of power consumption due to its frictionless operation.
These solar-powered washing machines manufactured by Dawlance guarantee the highest quality and performance and are aesthetically attractive.
New products have solved the major problems and challenges faced by Pakistan consumers.
Unfortunately, power grids in many parts of Pakistan are not in normal supply, and they are not even available in many parts of the country. The shortage of electricity in rural or remote areas has led to more and more consumers relying on solar panels and storage batteries.
Dawlance-Hasan Jamil, Director of Marketing, stressed the characteristics of Dawlance Solar Plus products. He said, “Dawlance dc brushless motors use 12 volts of direct current to power from solar energy and batteries, which can save 30% of energy. Fully silent operation ensures that your electricity bills can be saved for life.”
Dawlance is committed to providing families with the next level of convenience and unparalleled experience for the modern lifestyle of different consumer groups. In this dc brushless motor, a higher proportion of electric energy is converted into rotational force.

stepper motor driver: used in precise linear-motion application

stepper motor driver is used in a new type of precise transmission device which developed by Amacoil/Uhing Company, it has motion controller and is suitable for precise linear motion applications. According to the size of the driver nut, the stepper motor drive provides 7 to 800 pounds of axial thrust. The stepper motor driver provides almost unlimited flexibility to customize linear motion of the drive nut.
It includes a stepper motor controlled by SIEMENS S7 PLC. The shaft of the stepper motor driver is smooth surface hardened steel.Without threads, contaminants will not damage or plug them.
The shaft only rotates in one direction, so there is no need to buy reversible motors.The motion parameters of driving nut, such as travel direction and linear pitch, are controlled by the angle of rolling bearing in driving unit, and then controlled by user programming.
It is ideal for precision winding of a wide range of circular or flat materials, including wires/cables, PVC pipes, pipes, fibers, ropes, rubber hoses and vinyl strips. The precision motion drive system can also handle customized winding patterns and irregular shape spools.
The stepper motor driver is fully programmable and can be used for precise winding machine, X-Y coordinate tool movement and other machines.

bldc motor: how does it work in a ceiling fan

bldc motor is used in ceiling fans. A month after Panasonic launched a 7-watt emergency LED lamp, Anchor launched a series of smart fans using a new bldc motor to minimize power consumption in Indian homes and business offices.
The new bldc motor fan adopts the first-class technology of Japan and is produced in the most advanced factory in India.
The ceiling fan is assembled by bldc motor. This helps the fan to work without slippage loss and reduces power consumption by 60%. Therefore, it can maintain a constant speed (RPM) of up to 140 V even in the case of voltage fluctuation.
The new BLDC fans are certified by the U.S. Energy Efficiency Agency (EEA) as 5-star, so they consume less power without affecting air transmission.
The new anchor fan consumes only 30W of power and can provide 230 cubic millimeters (cubic meters) of air transport even at the highest speed.
The fan has a convenient remote control operation and a special sleep mode. It can switch to automatic shutdown function of 2 hours, 4 hours or 8 hours.
This series of indoor air quality fans are temperature sensitive and help to provide cool air and create a natural, comfortable and relaxed environment.
The new generation of bldc motor ceiling fan not only saves power, but also provides a variety of colors – White / silver, marble / gold and walnut / gold.

nema 34 stepper motor: how to reduce the heat of it

nema 34 stepper motor sometimes generates heat. Although stepper motor heating generally does not affect the life of the motor, but in some cases it will bring some negative effects. For example, some occasions do not allow excessive heating of the motor, such as medical devices and high-precision testing equipment. Therefore, the necessary control should be made for the heating of nema 34 stepper motor.
To reduce heat is to reduce copper loss and iron loss. There are two directions to reduce copper loss, reducing resistance and current. This requires that nema 34 stepper motor with small resistance and rated current should be selected as far as possible in the selection of type. For the selected stepper motor, the automatic half-current control function and off-line function of the driver should be fully utilized. The former automatically reduces the current when the motor is in static state, while the latter simply cuts off the current. In addition, due to the nearly sinusoidal current waveform and less harmonic, the subdivision driver will have less heat.
For all nema 34 stepper motors, the inside is made up of core and winding coils. The winding has resistance, the power will produce loss, the size of loss is proportional to the square of resistance and current. The core has hysteresis eddy current effect, it will also produce loss in alternating magnetic field, its size and material, current. Frequency and voltage. This is called iron loss. Both the copper loss and the iron loss will be manifested in the form of heat, thus affecting the efficiency of nema 34 stepper motor.

nema 17: essential component of the new motor

nema 17 and six controllers of different industrial Ethernet protocols, absolute multi-loop encoder, closed-loop and M12 connector compose the new ServoStep integrated stepper motor. This new nema 17 is based on the latest microprocessors and cooling technology and advanced design than before.
All the necessary electronic components in the stepper motor system are integrated in the motor itself, and are similar to other JVL motor concepts, so they are easy to use in various motion control stepping motor or servo motor applications. New nema 17 contains everything needed to solve modern control tasks, whether as an independent and self-programmable motion controller or from external PLC or PC control.
Industrial Ethernet:
Profinet, EtherCAT, Powerlink, EtherNet/IP, Modbus TCP or SERCOS III can be used, and synchronization and driver profiles of EtherCAT and SERCOS III can also be used.
MACtalk can use Ethernet to debug the motor, so there is no need for RS232/RS485 converters or extra cables.
Because of scalability, the JVL industrial Ethernet module is also a “proof of the future” because the new version of the protocol will always be suitable for design. New nema 17 is equipped with two Ethernet connectors and a built-in switch, so that the circuit topology does not require any additional expensive hardware.The new nema 17 can be upgraded at any time by using other protocols or updated versions of the same protocol.

nema 17 stepper motor: how to use it easily for beginners

nema 17 stepper motor is more difficult to use, especially for beginners. But with a huge 3D printing nema 17 stepper motor, Proto G makes your electronic commutator motor easier.
Although we’ve seen 3D printing stepper motors before, their size and simple layout really help us understand this theory.
In fact, nema 17 stepper motor cost $14 on Adafruit, and there are a large number of residual motors of all shapes and sizes, which are cheap, so your own motors won’t be cost-effective for a long time. Once again, if we are to unleash the full potential of additive manufacturing and start the industrial revolution of de-centralization, understanding the working principles of complex mechanical and electrical equipment such as step-by-step will be the key to developing on-demand manufacturing processes.
This is a 3D printing frame, coils wrapped around nails, rare earth magnets sticking to the rotor, this is an approachable construction, the interior of a stepper motor, so that everyone can see and understand.You can easily observe how the rotors are arranged when different coils are electrified in circular mode, although it may be more enlightening to include a two-color led to indicate which coils are electrified and what polarity is. These will help to demonstrate the concept of half step. The Proto G project will not allow you to launch available nema 17 stepper motor from 3D printers in a short time.

nema 23 stepper motor: what’s the microstepping myths of it

nema 23 stepper motor decomposes a complete rotating process into hundreds of independent steps, which makes them ideal tools for precise motion control, whether in automobiles, robots, 3D printers or CNC machine tools.In DIY projects, 3D printers and small CNC machine tools, most of the stepper motors you will encounter are bipolar, two-phase hybrid stepper motors, 200 steps per turn or higher resolution, 400 steps per turn. This leads to a step of 1.8 degree angles of 0.9 degrees.
To some extent, steps are pixels of motion. Usually, a given physical resolution is not enough. In the full step mode, hard switching of the coil (wave drive) of the stepper motor will cause the motor to jump from one step position to the next step position, resulting in overshoot, torque ripple and vibration.In addition, we also want to improve the resolution of nema 23 stepper motor in order to get more precise positioning. Modern nema 23 stepper motor drive has the characteristics of micro-step. This driving technology can squeeze any number of micro-step into every complete stepper motor of the motor. It can significantly reduce the vibration and (it is said) improve the resolution and accuracy of the stepper motor.
On the one hand, the micro step is actually the step of nema 23stepper motor, even under the load. On the other hand, they usually do not increase the positioning accuracy of nema 23 stepper motor.

bldc motor: why is it widely used

bldc motor has many advantages over other types of DC motors. They are high-speed operation, compact power level, almost no electromagnetic interference. However, the complexity and cost of driving circuits limit their applications.
The good news is that recently the development of semiconductor drive circuits has made bldc motors more popular. In fact, these new drive circuits may affect you, making bldc motor your first choice for new electric household appliances and industrial products.
bldc motor is different from ordinary DC motor, and has strong permanent magnet rotor and fixed stator winding. Windings are usually connected in three-phase structure, requiring three different driving signals to three sets of windings. The driving signal is applied by the controller to create a rotating magnetic field, which interacts with the magnetic poles on the rotor to produce a smooth and continuous rotation.
Bldc motors are sometimes referred to as electronic commutating motors. Although they are designated as DC motors, driving signals are a form of communication. At any time, one pulse is positive, one pulse is negative, and the third pulse is open (O) or floating. This series of pulses makes the rotor stable.
The general advantages of bldc motor include: standard DC motor does not use mechanical commutator and brush. Brush wear and shorten service life. In addition, the brush commutator switch combination produces arcs, which in turn can cause electrical noise. Bldc motor eliminates these problems. It is more reliable, efficient, and produces less electromagnetic interference, and bldc motor provides more torque and power than other DC motors.

nema 23: applied in space flight

nema 23 can work in harsh environments and inherent problems in outer space motion control. The stepper motor is assembled according to AS9100 standard, tracing the origin of each component, and strictly controlling the manufacture to the final product.
Most of the components on nema 23 are metal alloys, which are not painted and can be used in vacuum. Plastic materials should be non exhaust polyamide or nylon. Sealed bearings filled with low exhaust lubricants are also acceptable. The stepper motor winding is optimized to minimize the resonant frequency at a specific operating speed. The use of components with high concentricity and dimensional accuracy helps to ensure that the rotor or shaft does not bring unnecessary vibration to the system. In space, vibration must be avoided because they affect sensors and instruments on board ships; low-level oscillations affect the quality of measurement sensors and imaging equipment. Because spacecraft or satellites have no energy to transfer in space, restraining vibration is a challenge. Each nema 23 designed for space requires the integrity of the material structure to deal with the expected forces without changing dimensional accuracy or mechanical integrity. Launching spacecraft into orbit is very violent, because the components are exposed to high amplitude vibration, low amplitude vibration and multi-direction impact. In addition, nema 23 vibrates during normal operation.

dc brushless motor: how to maximize the efficiency of it

dc brushless motor uses inverter or switching power supply to drive each stage of the stepper motor. Generally speaking, dc brushless motor has three windings, just like an AC synchronous motor. The winding of dc brushless motor adopts current pulse. The number of coil windings determines the pole of the motor. dc brushless motor usually has four poles. Compared with DC motor based on commutator, motor speed and torque control can be effectively carried out. Compared with the conventional commutator, the dc brushless motor has a longer life.
A digital controller is needed to maximize the efficiency of dc brushless motor. Maxon has developed a digital controller based on electronic control (EC) amplifier to operate dc brushless motor. DEC 24/2 (Digital EC Controller) is a small shape factor unit (20.38 mm x 24.2 mm), which can drive a dc brushless motor with 48W power consumption. Module 24/2 is a 1-quadrant controller, which can accelerate the speed and torque of dc brushless motor in the same direction. It can drive motor up to 80000 rpm. The three speed can choose to use two digital input pins. The binary combination of 1 and 0 can choose the three speed of the digital controller. The module 24/2 can also change the rotation direction of dc brushless motor using similar binary signal speed selection scheme.

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