Stepping motor small volume

Stepping motor small volume, big torque, although in the narrow space inside, still can well do installation, and provide high torque output. Stepping motor speed - torque characteristic Speed - torque characteristic depends on the motor and drive, especially with the tie-in drive has a great influence; The use of driver is different, the characteristic differences also will have obvious difference. Stepping motor speed - torque characteristic curve (FIG. 2) explanation:
(1) excitation maximum static torque: when running pulse velocity is equal to 0 Hz, curve and the Y axis handover point is called excitation maximum static torque. Also means motor in electricity but no input pulse signal, its have holding torque is called excitation maximum static torque.
(2) the emersion torque: also called the maximum torque, for the motor in operation can drive the maximum load.
(3) the maximum response frequency: in no load and load inertia is 0, the motor can response of the fastest speed.
(4) the biggest since the start frequency: motor under no-load condition can be instantaneous starting and do not break step speed is known as the biggest since the start frequency. Two facies of five phase stepping motor differences Stepping motor is mainly in phase to rotary joints do classification, and among them again with two phase, five phase stepping motor on the market at present is that is adopted widely. Two phase stepping motor every turn the most fine divisible for 400 uniform, five phase can be divided into 1000 uniform, so the characteristics of the show by five phase stepping motor better, deceleration time is short, dynamic inertia is low. Two phase/five phase stepping motor diff Five phase stepping motor basic performance compared to collect Money optimal/good/train is a bit poor decomposition can vibration velocity Angle precision response sex torque noise two phase stepping motor train money money train five phase stepping motor money stupid stupid stupid The step motor drive system Stepping motor in only limited to voltage, the motor is not action, must through the pulse wave generator provide position (pulse wave number), the speed pulse wave signal instruction, and drive motor drive current flows through the internal coil, in that order switching exciting phase sequence way can make motor running. So you want the stepping motor action necessary system composition are:

1. Pulse generator: give Angle (position quantity), movement speed and direction of running the pulse signal of motor drive instruction.

2. Stepping drive: according to rotary union
3. Stepping motor: provide torque power output to drive the load. So the stepping motor system is easy to constitute, and don't need speed SENSOR (ENCODER, speed generator), position SENSOR (SENSOR), that is in accordance with the pulse generator which can input pulse to do speed and position control. Stepping motor speed, position control Speed control: The step motor running speed and the input pulse velocity into proportion relationship, so in pulse the faster, the stepping motor speed also will follow faster, Pulse wave speed is slow, motor speed nature also follow slow.

The motor running speed (RPM) and pulse velocity (PPS, also called Hz) the relation between are as follows: The motor running speed (RPM) = pulse velocity (PPS or Hz) x 60 ÷ stepping motor division number/ring Description: 1 RPM for general motor speed units, namely rev/min, per minute to turn the machine turns; PPS for stepping, servo motor speed units, namely pulse per second, per second sent out by the number of pulses. fiber optic rotary joint 2. Because of RPM and PPS unit different, so in the conversion process must first will be the second PPS multiplied by 60 to minutes. 3. Stepping motor division number/ring, and representative to make motor turns a circle must send out the number of pulses. 4. The above formula after disassembling the unit expressed as to rev/min = pulse/SEC x 60 multiply one/division number