【正文】 reaction is generally threephase stepper can achieve high torque output, step angle of degrees is generally, but the noise and vibration are significant. In Europe。 the higher the frequency, the greater the back emf. In its role, the motor with the frequency (or speed) with the increase of current decreases, resulting in decreased torque. 4. Lowspeed stepper motor can operate normally, but higher than a certain speed can not start, acpanied by howling. Stepper motor has a technical parameters: Noload starting frequency, ie stepper motor in case of the normal boot load pulse frequency, pulse frequency is higher than the value if the motor does not start, possible lost step or block transfer. In the case of a load, start frequency should be lower. If you want to achieve highspeed rotation motor, pulse frequency should speed up the process, which started less frequently, and then by a certain acceleration to rise to the desired frequency (motor speed from low rise to highspeed). Stepper motor with its significant features in the era of digital manufacturing plays important purposes. With a different digital technology development and technology to improve its own stepper motor, stepper motor will be applied in more areas. Stepper motor Tips 1. What is a stepper motor? Stepper motor is an electrical pulse into the angular displacement of the implementing agencies. Popular talk a little: When receiving a stepper drive pulse signal, it drives the direction of stepping motor rotation by setting a fixed angle (and step angle). You can control the pulse number to control the amount of angular displacement, so as to achieve accurate positioning purposes。s rotor is not a permanent magnet, so it does not DETENT TORQUE. Characteristics of stepper motor 1. General stepper motor step angle accuracy of 35%, and not cumulative. 2. Stepper motor allows the maximum surface temperature. Stepper motor temperature is too high the first magnetic motor will demagnetization, leading even torque step down, so the maximum motor surface temperature should be allowed depending on motor demagnetization of magnetic material points。s output torque increases with the constant decay rate, the output power also increases with the speed of change, it bees a measure to maintain torque stepper motor one of the most important parameters. For example, when people say the stepper motor in case of no special note is to keep the stepper motor torque . DETENT TORQUE: Stepper motor power is not the case, the stator locked rotor torque. DETENT TORQUE translation in China there is no uniform way, easy to misunderstand us。Phase39。 / 176。 / 176。 / 176。natural step angle motor39。, when the whole work step 176。 / 176。Induction Compared with the traditional reactive, structure plus a permanent magnet rotor, in order to provide the working point of soft magnetic materials, while providing only change the stator magnetic field excitation instead of magnetic materials to provide the operating point of the energy, so the motor efficiency is high, current, low heat. Due to the presence of permanent magnets, the motor has a strong antielectrical potential, the damping effect of its own is better, it was more stable during operation, low noise, low frequency vibration. Induction to some extent can be seen as lowspeed synchronous motor. A fourphase motor can be used for fourphase operation, it can be used for twophase operation. (Must be bipolar voltage drive), and reactiontype motor can not be the case. For example: four phase, eightphase operation (AABBBCCCDDDAA) can use twophase eightshot operation mode. Is not difficult to find the conditions for C =, D =. 1 Twophase motor windings and the fourphase motor internal consistent, lowpower motor directly connected to the second phase generally, and larger motor power, for the convenience of use, flexibility to change the motor39。 is A, is the gear tooth 5 1) The following is the rotor39。Stepper motor inverter ■ low torque output of 180%, lowfrequency characteristics of a good run ■ the maximum output frequency of 600Hz, highspeed motor can be controlled ■ prehensive detection protection (over voltage, under voltage, overload) and then start an instant power failure ■ acceleration, deceleration, dynamic change in the stall protection function to prevent such ■ Automatic Identification of dynamic parameters of motor function, to ensure system stability and accuracy ■ fast response and highspeed shutdown ■ rich and flexible input, output interface and control, versatility ■ full mount with SMT production and three antipaint treatment process, high product stability ■ full range of Siemens IGBT power devices using the latest, to ensure the quality of highquality Basic principles Usually for the permanent magnet rotor motor, when current flows through the stator windings, the stator windings produce a magnetic field vector. The magnetic field will lead to a rotor rotation angle of the magnetic field makes the direction of a rotor and the stator magnetic field in the same direction. When the stator magnetic field vector rotating at an angle. As the magnetic field to switch the rotor is also a point of view. An electrical pulse for each input, a motor rotation angle forward. It is the output of the angular displacement proportional to the input pulse, speed and pulse frequency is proportional to. Power to change the order of winding, the motor will reverse. Hence we can control the pulse number, frequency and electrical power windings of each phase in order to control the stepper motor rotation Reaction Stepper Motor In response to the stepping motor works is simple. The following first describes the principle of threephase step motor response. 1, Structure: Rotor uniform distribution with many small teeth, the stator tooth has three excita