Stepper motor and ac servo motor performance comparison of different control precision

 Two-phase hybrid stepper motor step Angle is 3.6 ° and 1.8 °, 5 phase hybrid stepping motors interval Angle is 0.72 ° and 0.36 ° in general. electric motor single phase motor There are also some high-performance stepper motor step Angle is smaller. Such as cross company produces a kind of stepping motor for wire walking machine, where the step Angle is 0.09 °. BERGER LAHR company in Germany (BERGER LAHR) production of three-phase hybrid water pump price stepping motor where the step Angle can dial the code permanent magnet generator switch is set to 1.8 ° and 0.9 ° and 0.72 ° and 0.36 ° and spare parts 0.18 ° and 0.09 acmotor2.blogspot.com ° and 0.072 ° and 0.036 °, combine www.dongfeng-motor.com the two and five phase hybrid stepper motor step Angle. Control precision of the ac single phase motor servo motor by the motor shaft after the rotary encoder. Panasonic digital ac servo motor, for example, in line with standard 2500 encoder of the motor, drive due to the permanent magnet generator internal used four frequency multiplication technology, the pulse equivalent to 360 ° / 10000 = 0.036 °. For with 17 encoder of the motor, drive each receive 217 electric generator = 131072 pulse motor turns a circle, namely the pulse equivalent to diesel generator set 360 ° / 131072 = 9.89 seconds. Interval Angle is 1.8 ° is 1/655 of the pulse equivalent of stepper motor.

The motor current limiting process

 Stator And Rotor ac induction motor parts 
Specifications
1. 20 years manufacturing experience 
2. competitive price,high quality 
3. Material: silicon steel 
To mention, existing many controller on the market have different characteristics with the above characteristics, it just shows they are used in the current limiting method diesel generator is different from www.dongfeng-motor.com the above methods. Relative to do concrete analysis. Now, there are a lot of factory workers gauge is used to measure the connection of the motor controller electric water pump characteristic curve. How, then, according to the above theory in the existing I - T - output torque (current) looking for current limiting points on the graph? We know that the motor of the original I - T graph is a straight line, so, I - T existing graphics started to auto spare parts deviate from a straight line on the current point is the point of current limit. 


Y2 series high power China ac motor
Specifications
1. effiency: IE2 and IE1 
2. 20 years manufacturing experience 
3. 12 months guarantee 

4. low noise and vibtration 
After this point, I - T existing graphics can no diesel generator set longer be representing the relation between motor ac induction motor current with its output torque. Can prove that, after the current limiting motor current along the current linear grows to its current limit value. Existing dynamometer can record the changes of the battery electric current of the current ac motor limit, but it can't reflect Water pump the current limit in the process of the change of the motor current, this is a big shortage, to some extent, it confuses the motor diesel engine current and battery current difference, hinders people deeply understand the essence of the motor current and meaning.

The selection generator price of thermal relay

 AC Induction Plastic motor fan 
Specifications
1. Customised 
2. good quality 
3. 20 years manufacturing experience 
Thermal relay used in motor overload protection. The choice of thermal relay is based largely on. The rated current of the motor to determine the type and specification. Rated current of the thermal relay element. IRT should be close to or slightly greater than the rated current of the motor Ied, namely: the electrical control system design. In general, can choose two phase structure of thermal relay, the serious imbalance in the power grid voltage, motor under the condition of poor working conditions, can choose three phase structure of the thermal relay, for motor delta connection, in order to achieve the phase failure protection and are optional with open phase protection of thermal relay. If the following electric motor parts circumstances,

ac three phase asynchronous electric motor stator 
Specifications
1. 20 years manufacturing experience 

2. competitive price,high quality 
 the choice of thermal relay setting current than the motor rated current of components, www.dongfeng- motor.com in order to protect: (1) the inertia torque motor load is single phase motor very large, rotor the starting time is long; (2) motor driven equipment, do not allow any power failure; (3) motor drive for the impact loads, such as punching machine, shearing machine equipment. The commonly used thermal relay JRl, JR2, permanent magnet generator lamination machine JR0, JRl6 etc. JRl6B series double metal plate thermal relay and www.dongfeng- motor.com its current setting range is wide, and a temperature compensating device, suitable for long-term job or intermittent ac motor overload protection, and phase failure protection device operation. generator JRl6B diesel generator set is modified by JR0. This series of products used in place of JR0 three pole and thermal relay with phase failure protection.

V/f conversion control method

Cast Iron electrical motor auto spare parts 
Specifications
1. 20 years manufacturing experience 
2. competitive price,high quality
3. Delivery Detail:within 10 days after receiving deposit 
 In the asynchronous motor speed regulation principle, focuses on frequency conversion air conditioner here is how to realize the V/f of the frequency conversion control, which is widely used in inverter PWM (pulse-width modulation) technology. Asynchronous motor with inverter drive box. The ac to dc rectifier, smooth ac electric motor loop after the pulsating dc smooth, by the inverter it transform into frequency adjustable alternating current (ac). As shown in figure 3 (a), a sine wave divided into N (N = 12), and then put the sine curve and the horizontal axis of each uniform surrounded area, are high with an equal in the area of rectangular pulse to replace, the halfway point of the rectangular pulse with sine wave every parts. With sine wave of equivalent continuous rectangular wave pulse sequence midpoint overlap (pictured above), in this way, by N continuous and wide range of rectangular pulse waveform with the positive half cycle of sine wave equivalent. Also, sine wave of negative half cycle can be equivalent with the same method. Figure 3 (b) a series of pulse waveform is expected by the PWM inverter (Pule Width Modulation) waveform. Because of the pulse amplitude is equal, so the inverter can be made of a constant dc power supply. 


high efficiency high power electric motor Y2 motor

Specifications
1. effiency: IE2 and IE1 
2. 20 years manufacturing experience 
3. 12 months guarantee 

4. low noise and vibtration
That electric motor price is to say, this kind of hands has been a make inverter in the inverter adopts uncontrolled diode rectifier. Inverter output pulse amplitude is the output voltage of the rectifier. Such as inverter all switching devices are working under ideal state, to drive the corresponding signal switching device should also be similar to figure 3 (b) the shape of a series of pulse waveform. As a result of the PWM output voltage waveform and current waveform is sine wave, with many higher harmonic components, which makes the energy input to the motor cannot be fully use, increase the wear and tear. In order to make the output waveform similar to sine wave, sinusoidal pulse width modulation (SPWM) is proposed. So-called SPWM modulation, simply speaking, is in the pulse width modulation, the duty ratio of pulse sequence shall be carried out in accordance with the law of sine wave of change, that is, when the sine wave amplitude is maximum, the pulse width is the largest also, when the sine wave amplitude is the minimum value, pulse width and minimum (as shown in figure 4). In this way, electricalmotor1.blogspot.com the output pulse sequence can be made to the motor load greatly decreases, and the higher harmonic current component to improve the efficiency of the motor. SPWM waveform is sum up the features of "continuous range wide, two narrow middle wide".

Switching network control equipment

electric motor stator rotor lamination motor parts 

Specifications
1. Lamination of electric motor 
2. IP54 class F 
3. 100% copper 
4. silicon steel stamping 

5.stunning performance
Control part is the core of SPC exchange, its main task is according to the requirement of the external users with the internal maintenance management, implement stored procedures and various commands, exchange ac electric motor and management functions to control the corresponding hardware implementation. SPC exchange control equipment's body is a microprocessor, usually according to the configuration and control methods of different, can be divided into two categories, centralized control and decentralized control. In order to better adapt to the requirement of software and hardware modular, improve the processing ability, and enhance the flexibility and reliability of the system, the decentralized control of SPC switching system is gradually improved, has been widely used in partial or total distributed control mode. 


high efficiency high power electric motor Y2 motor

Specifications
1. effiency: IE2 and IE1 
2. 20 years manufacturing experience 
3. 12 months guarantee 

4. low noise and vibtration
What is the switch? Exchange electric motor price switching is based on the needs of information communication on both ends of the transmission, using artificial or equipment automatically, to transfer the information to meet the requirements on the corresponding routing technology. Generalized switch switch is a complete the function of information exchange in communication system equipment. Exchange and switches originating in telephone communication system (PSTN), we motor electric can still see in old movies such scene: head (calling subscriber) picking up the receiver to a fierce shake, office end is a row of machine with thread, wearing headphones miss traffic after the connection request is received, the ends inserted in the corresponding exports, for the two clients to establish a connection, until the end of the conversation. This process is established by artificial way of exchange. Of course now we have the SPC exchange, exchange process is done automatically.

The dc grounding method 2

Multipoint earthing: ground wire of each system USES more short wire grounding method, called the multipoint earthing. When a signal or a high frequency of electromagnetic interference or using fast logic, coupling capacitance coupling effect will produce some kind of interference, then lead length become the main contradiction, multipoint earthing must be used to minimize the series impedance, and to minimize the standing wave. Multipoint grounding method is applied to the high frequency circuit (f > 10 MHZ). Before two hundred and thirty, interference is called radio frequency interference, because most of the noise and interference signal from the radio frequency. Today the electronic computer, digital technology and logic circuit constantly expand the application field, the interference is known as the electromagnetic interference (emi) now. Electromagnetic interference including conductive electromagnetic interference, the interference energy sent through a wire or cable from one circuit to another circuit. Reduce the conductive electromagnetic interference is through reasonable design of the circuit, filter acmotor2.blogspot.com and rational grounding circuit is used to realize; 

The radiation electromagnetic interference of the energy is transmitted through the electromagnetic field in air. In the design of casing and casing, by choosing reasonable shielding materials, single phase asynchronous motor construction technology and equipment arrangement and the reasonable grounding technology and so on to reduce the radiation electromagnetic interference. Which deal with grounding engineering is the most important technical measures preventing electromagnetic interference. Most of low frequency interference is coupled to each other through the line, the previously mentioned common impedance coupling. When two circuit electric current flows through the same public impedance of a circuit when the current is 5kw permanent magnet generator formed on the impedance voltage will affect the www.dongfeng-motor.com other circuit, which is common impedance coupling. If a common grounding network in different places respectively connected to the attachment. Due to the common impedance coupling relationship, the attachment will be Vg1 and Vgz voltage between the connection of the ground voltage is not the same. Vg1 and Vgz is interfering voltage, after amplification could directly affect the communication or control signals. Multipoint grounding allow there is a lot of the advantages of the loop, then at the same time, use of low frequency circuit can be harmful, if you have the above situation, can consider to adopt the method of mixed ground.

STB high performance permanent magnet synchronous servo motor

(H) series product categories:low speed permanent magnet generatornumerical control system,the feature-motor and servo motor drive-product parameters:Product brand:other product overview:compared with induction servo motor,synchronous servo motor has higher dynamic performance,more energy-efficient,and better Low speed torque characteristic and control characteristic,guides the technological change in the field of industrial machine,in order to comply with the demand of the market,fu tian motor in full Research of the customer's requirements,analysis,product development trends,and fully study the international first-class product technology,on the basis of developed STB and STH series big moment Servo

synchronous motor series,production enterprises:Shanghai fu tian motor manufacturing co.,LTD.Product advantage:with the technology of industrial machine from all walks of life Upgrading,more and electric motor cooling fan more ordered its main power motor satisfy the premise of powerful driving moment,but also more rapid dynamic response ability and high precision Ability,to improve the automation of machine function,improve the efficiency and capacity of the machine work,and to promote the quality of the product,in this case,a For the combination of torque and servo power requirements type wholesalemotor.blogspot.com servo motors are produced.Spatially-integrated SVS,STB (H) series,motor is suitable for such a demand of electricity Machine type products,under the rated speed,synchronous series products compared to the STB (H) series of products with tis servo characteristics,but in the weak magnetic speed Period,the characteristics of the STB (H) series of products is superior to synchronous motor series.Compared with induction servo motor,synchronous servo motor has higher dynamic performance,More energy- efficient and more excellent low-speed torque characteristic and control characteristic,is to guide the technological change in the field of industrial machine,in order to comply with the demand of the market,Fu tian motor in investigating the development trend of customer requirements,analysis of products,and fully study the international first-class product technology,on the basis of developed STB and STH Series of large torque servo synchronous motor series,emphasize on designed high reliability and high performance.