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The carbon brush should be inserted into the brush holder so as to be able to move freely up and down. The gap between the carbon brush and the inner wall of the brush holder is between 0.1-0.3 mm to avoid swinging between the carbon brush and the brush holder due to excessive clearance. The distance from the lower edge of the brush holder to the surface of the commutator should be maintained at about 2 mm.

In the current high-end electric fan market, businesses are playing DC motor cards. They often have twice the price and dozens of stalls. Please analyze the advantages (or disadvantages) of DC motor fans compared to previous ones in terms of noise, airflow, energy consumption, and failure rate.

What are the precision reducers commonly used in industrial robots?The RV reducer is developed on the basis of a cycloidal pin wheel drive and has a secondary deceleration and center disc support structure. Since it was put into the market in 1986, it has become a “royal” reducer for robots due to its advantages such as large transmission ratio, high transmission efficiency, high movement accuracy, small backlash, low vibration, rigidity, and high reliability.

Using a single-chip microcomputer to control a high-power DC motor (200W), controlling the steering relay is acceptable, but it is difficult to control the speed. The motor supplies you with 12~24V, which means that the current is about 10A, and the original can not carry the original. How to control this kind of high-power DC motor? What information is worth learning from? (For low-power DC motors, it can be controlled by a triode bridge circuit or directly with a microcontroller PWM wave.)

The driver is the robot’s power system, which is equivalent to the human cardiovascular system. It is generally composed of a drive device and a transmission mechanism. Due to different driving methods, the driving device can be divided into three types: electric, hydraulic and pneumatic. The dc or ac motor, hydraulic cylinder, and cylinder in the drive device can be directly connected with the operating machine, and can also be connected with the actuator through the transmission mechanism. The transmission mechanism usually has several types such as gear transmission, chain transmission, harmonic gear transmission, screw transmission, and belt transmission.