Many beginners may have watched some videos or live games, evoked childhood memories, and raised the idea of ​​making robots by themselves. Many people may not be embedded in the industry, or even heard. The term "single-chip microcomputer, stepper motor", looking at other robots running around the ground, quite has nowhere to start feeling. Some people are ready to be a humanoid robot that can walk on both feet, can walk smoothly, can rely on the camera to read environmental information, can be recognized by voice, and can also be deformed...
My opinion is: It is best for novices to start from the car honestly. Humanoid robots can be said to be a systematic project, not a person to play, and the financial investment is not quantifiable. A humanoid robot's molded product must be sold for at least a few thousand pieces - know that you can't make a mistake in the development process. The robot car technology has a lower threshold, less capital investment, and more support for various products and spare parts in the market. Although simple, the functions that can be realized are quite a bit.
I am here to introduce some of the basics of making a robotic car by myself. If you are a master who has done it yourself, then you can go around. I am here to introduce the most basic for the beginners. Theoretical knowledge and some hands-on experience.
So now we start, first of all, the theoretical part - the control structure of the car.
[1] The overall control system of the car
How is the car controlled? Why can the car automatically circumvent after determining the obstacle?
Theory: Control Engineering - A comprehensive engineering technique for dealing with various engineering implementation problems in automatic control systems. It includes the requirements for the automatic control system (ie, the specified indicators), design, construction, operation, analysis, inspection and other processes. It was developed on the basis of electrical engineering and mechanical engineering.
Closed-loop control: Closed-loop control has a feedback link. The feedback system is improved in system accuracy and shortened response time. It is suitable for systems with high response time and high stability requirements.
Open-loop control: There is no feedback link in open-loop control, the stability of the system is not high, the response time is relatively long, and the accuracy is not high. It is used in a simple system that does not require high stability and accuracy of the system.
Generally, the slightly more complicated robot car is closed-loop control, which means that it has a feedback mechanism that reads environmental information according to various sensors that it is equipped with, and decides its next action based on the environmental information. The action command is then sent to the execution system to enable the robot to make the appropriate action. Of course, some robot cars are open-loop control. I have seen a robot car with a pen, put the robot on the paper, the robot turns, brush a circle on the paper, of course, due to friction For reasons such as mechanical errors, the circle drawn may not be closed or may not be round. However, everyone Ah Q said: "The circle that Grandson painted..."
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