Themicro pmdc planetary gear motor supplieris a special motor specifically designed for precise control of position and speed. The biggest feature of the micro pmdc planetary gear motor supplier is its "digital", for each pulse signal sent by the controller, The micro pmdc planetary gear motor supplier operates at a fixed Angle (a step for short) driven by its drive. If a pulse is received, the micro pmdc planetary gear motor supplier will run continuously for a corresponding distance. At the same time, the speed of the motor can be controlled directly by controlling the pulse frequency. Because the working principle of micro pmdc planetary gear motor supplier is easy to learn and use, the cost is low (relative to servo), the motor and drive are not easy to damage, and it is very suitable for microcomputer and single-chip microcomputer control, so it has been more and more widely used in control equipment in various industries in recent years.

Types and characteristics of micro pmdc planetary gear motor supplier

micro pmdc planetary gear motor supplier There are three main types in construction: Variable Reluctance (VR), Permanent Magnet (PM) and Hybrid Stepping (HS).

Reaction equation

The stator has winding and the rotor is composed of soft magnetic material. Simple structure, low cost, small step Angle, up to 1.2, but poor dynamic performance, low efficiency, large heat, reliability is difficult to guarantee.

Permanent magnet

micro pmdc planetary gear motor supplier The rotor is made of permanent magnet material, and the number of poles of the rotor is the same as the number of poles of the stator. It is characterized by good dynamic performance and large output torque, but this motor has poor accuracy and large step Angle (generally 7.5 or 15).

hybrid

The hybrid micro pmdc planetary gear motor supplier combines the advantages of reactive and permanent magnet, with a polyphase winding on the stator, permanent magnet material on the rotor, and multiple small teeth on the rotor and stator to improve step accuracy. It is characterized by large output torque, good dynamic performance and small step Angle, but the structure is complex and the cost is relatively high.

According to the upper winding of the stator, there are two phase, three phase and five equal series. The most popular is the two-phase hybrid micro pmdc planetary gear motor supplier, accounting for more than 97% of the market share, due to its high cost performance and good effect when paired with subdivision drives. The basic step Angle of the motor is 1.8/ step, with a half-step driver, the step Angle is reduced to 0.9, and with a subdivision driver, the step Angle can be subdivided up to 256 times (0.007/ microstep). Due to friction and manufacturing accuracy, the actual control accuracy is slightly lower. The same micro pmdc planetary gear motor supplier can be configured with different subdivisions to vary accuracy and effect.

How to select micro pmdc planetary gear motor supplier and driver

Determine how much torque is required: Static torque is one of the main parameters for selecting a micro pmdc planetary gear motor supplier. When the load is large, a large torque motor should be used. When the torque index is large, the motor shape is also large.

Judge the motor running speed: When the speed requirement is high, a motor with larger phase current and smaller inductance should be selected to increase the power input. And a higher supply voltage is used when selecting the driver.

Select the installation specifications of the motor: such as 57,86,110, etc., mainly related to the torque requirements.

Determine positioning accuracy and vibration requirements: Determine if and how much subdivision is required.

Select the driver based on the motor's current, subdivision, and supply voltage.

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