Home > categories > Machinery & Equipment > Stepper Motor > What is the working principle of the three-phase six step stepper motor?
Question:

What is the working principle of the three-phase six step stepper motor?

What is the working principle of the three-phase six step stepper motor?

Answer:

Torque: once the motor is energized, the magnetic field generated in the rotor (magnetic flux phi) when the rotor and the stator stagger angle and force F (d with /d 0) and its magnetic flux is proportional to the S with =Br*S Br S as the magnetic flux density and area of F and L*D*Br is proportional to the effective length of L as the core D, Br=N - I/R N for rotor diameter I for excitation winding ampere (current by turns) R reluctance. Torque = force * radius torque and motor effective volume ampereturns * * magnetic density is proportional to the (only consider the linear state) therefore, the greater the effective volume of motor excitation, the greater the number, the air gap between the stator and rotor motor torque is smaller, and vice versa.
It can be seen that the position and speed of the motor are in one-to-one correspondence with the frequency of electrical conduction (pulse number) and frequency. The direction is determined by the order of conduction. However, consideration is given to torque, stability, noise, and angle reduction. This is often used in A-AB-B-BCC-CA-A conductive state, the original 1/3 the change to 1/6 at every step. Even through the combination of different phase current, the 1/3 to 1/12 at the 1/24, but, this is the basic theory of subdivision driving. It is not difficult to introduce: the motor stator has M phase excitation winding, the axis of which is offset with the rotor tooth axis 1/m, 2/m...... (m-1) /m, 1. Moreover, the electric conduction can be controlled by the motor according to a certain phase sequence, which is the physical condition of the rotation of the stepping motor. As long as this condition is met, we can theoretically manufacture any phase stepping motor. For cost and many other considerations, the market is usually two or three and four or five.
2, rotation: such as A, the same power, B, C, when the power is not connected, due to the role of magnetic field, the teeth 1 and A aligned (the rotor is not the same under any force). Such as B A and C are electrically connected, no electricity, 2 teeth should be aligned with the B, the rotor is shifted to the right 1/3 at this time, 3 teeth and the C offset is 1/3 at A offset, and 4 teeth (at the -1/3) at =2/3. Such as C A, B communicated with electricity, electricity, 3 teeth should be aligned with the C, the rotor is shifted to the right 1/3 at this time, 4 teeth with A 1/3 at offset alignment. Such as A B, C communicated with electricity, electricity, tooth 4 is aligned with the A rotor and shifted to the right 1/3 at A, B, C after A, respectively. The power on state, 4 teeth (i.e. 1 teeth before a tooth) moved to the A phase, the motor rotor right turned a pitch, if continue to press the A, B, C, A...... Electric motor, step (per pulse) at 1/3, turn to the right. For example, press A, C, B, A...... Turn on the machine and turn on the machine.
Working principle:1, structure: uniformly distributed rotor with many small teeth, the teeth of the stator with three excitation winding, the geometric axis of the rotor tooth axis in orderwere staggered. 0, the 1/3, the 2/3, (two adjacent rotor tooth axis was the distance between the pitch to the said, A and 1) teeth aligned, B and 2 1/3 at right staggered tooth, C and 3 2/3 at the right gear staggered, A 'and 5 teeth aligned (A' is A the 5 is 1), gear tooth

Share to: