Sometimes after watching some robot videos or live games, there will be an urge to make robots by yourself, but most people don't have professional knowledge, so they don't know how to start. Today, the maker assembly number introduces some basic knowledge of robots, step by step to understand robots, let's talk about the motors commonly used in robots. There are three types of motors commonly used in robots: ordinary DC motors, servo motors, and stepping motors. 1. A rotating motor whose output or input is DC power is called a DC motor. It is a motor that can convert between DC power and mechanical energy. When it operates as a motor, it is a DC motor, which converts electrical energy into mechanical energy; when it operates as a generator, it is a DC generator, which converts mechanical energy into electrical energy. 2. Servo motor Servo motor, also known as executive motor, is used as an actuator in an automatic control system to convert the received electrical signal into angular displacement or angular velocity output on the motor shaft. Divided into two categories of DC and AC servo motors, its main feature is that there is no rotation when the signal voltage is zero, and the speed decreases at a uniform speed with the increase of torque. 3. Stepping motor Stepping motor is an open-loop control element that converts electrical pulse signals into angular displacement or linear displacement. In the case of non-overload, the speed and stop position of the motor only depend on the frequency and pulse number of the pulse signal, and are not affected by the load change. That is, when a pulse signal is added to the motor, the motor rotates through a step angle. The existence of this linear relationship, coupled with the characteristics of the stepper motor having only periodic errors and no cumulative errors. This makes it very simple to use a stepper motor to control the speed, position and other control fields. Beginners generally don't know much about the control of motors by single-chip microcomputers. At first, you can use the PWM signal output by the single-chip microcomputer to control the DC motor. Furthermore, you can try to control the stepper motor to achieve higher control accuracy. For the motion drive of the trolley, a DC motor or a stepper motor can generally be used, and a servo motor is generally used on a mechanical arm to obtain a precise rotation angle. DO-27 diode, DO27 Rectifier Diode Changzhou Changyuan Electronic Co., Ltd. , https://www.cydiode.com
May 10, 2023