Chapter 883 The big gains of technicians
"You are not in the control computer to convert relative data into absolute data?" Gao Zhendong was a little surprised. It was not that, this is the most basic operation. "Some, some, but the working environment of the machine tool is relatively poor. It is close to the motor. Just the voltage fluctuation caused by the start and stop of the motor may drive away the microcontroller program, and there is also the operation time The electromagnetic field changes may also cause the program to run away. At this time, even if the absolute data stored in non-volatile memory is present, it will lose its meaning to re-extract it."
This is a problem in principle, in the early stage When the theories of peripheral devices, circuit design, housing design, etc. have not reached a certain level, it is very common. One of the early methods to detect the reliability of equipment with microcontrollers is to use a high-power electric drill and connect it to the microcontroller system to the same AC power supply. Then the electric drill approaches the microcontroller equipment, and repeatedly starts the power outage drill, which can withstand the flight, and even if it is still acceptable. "Then what is your solution?" Gao Zhendong didn't say anything directly, but saw how they solved it themselves.
"On the one hand, we find ways to solve the reliability problem of computer operation, but this can only solve some problems, but it cannot be eliminated. After all, if the high-value part is being processed, it may cause the parts to be scrapped. The losses will be very large, and we cannot afford this risk. "Under the influence of Gao Zhendong, the technicians of the third branch factory have considered the problems in a relatively comprehensive way. "So what are your considerations?" "We think, since you specifically proposed a relative encoder, is there an absolute encoder? If there is an absolute encoder, At least the motion data will not be lost. We will combine other technical means to basically solve this problem. "
Hey, it's interesting, and you will learn from it. Gao Zhendong laughed. "Well, your idea makes sense. Indeed, there are absolutely multiple encoders. Have you asked Guangyang Factory if you have asked him?"
"I asked us, we didn't. We came here too today, just to continue to learn from you." A comrade next to him smiled.
Wow, they brought quite a lot of people, Gao Zhendong laughed. "Well, let's put the matter of absolute encoder aside first. Comrades from Guangyang Factory, come back and bring people here, let's talk about this matter." Gao Zhendong did not directly solve the matter of absolute encoder, But the comrades from Guangyang Factory were as calm as if they had a reassurance, and it was not a big problem two days earlier or two days later.
Indeed, he came here to find out today. If he didn't bring all the people, he might lose details if he reposted them, which would be a waste of time.
Put down the comrades of Guangyang Factory who were nodding with joy on his face, Gao Zhendong turned to look at the technician of the third branch factory.
"You must solve this matter comprehensively from several aspects and try to improve it."
He is here, Mr. Gao has always been so reliable, and there are always surprises here.
"One is the power supply, you must isolate the power supply. In this regard, one is the circuit design, and the other is the power supply device must be good."
The technician of the third branch factory nodded repeatedly: "Yes," , But in terms of power supply, we don’t have many methods and theories. The devices are those, power supply circuits, and what we can do is the classic circuits. "
"Well, in terms of devices, you don’t have to worry about it for now , There may be a change soon, but this cannot solve the fundamental problem. You still have to work hard on the power supply. In this way, I will give you a piece of information. If you study it carefully, you should be able to make a change."
In terms of devices, we have to wait for the 1218 power electronics to achieve results, which will take some time. Moreover, the device is not of great significance to this situation. The various crosstalks coming in from the power supply must be solved by the entire set of circuits.
Thinking of this, Gao Zhendong remembered the famous HiFi jokes about water, electricity, thermal power in his previous life, and he had to be a HiFi guy.
As a person who worked with his mentor in his undergraduate studies in his previous life, Gao Zhendong has a common book on electronic system power supply design, but he couldn't give it to them immediately. This thing is a data from decades later. The example circuit has a large number of components that do not exist at present. I am afraid they will go crazy.
It will take some time to cut it before you can take it out.
The technicians in the third-branch factory looked happy. This sounds like a good thing, more or less theoretical. It is not only to solve their current problems, but to use power supply designs similar to systems. It is said that for ordinary technicians, if they can understand this book thoroughly, they will basically have no worries for the rest of their lives.
I really don’t know how many good things Mr. Gao has here.
Gao Zhendong did not disappoint him next. Mr. Gao really had a lot of good things here.
"As for the impact of the electromagnetic environment on electronic systems, I have a set of information here, which is already ready-made, you can take it to take a look. Your work has slowly begun to enter the high-frequency field, please contact it in advance It is beneficial to have these things."
Gao Zhendong stood up and walked towards the safe that was very famous in the third branch factory and even multiple ministries and commissions, and took out a set of information from it.
A set of theoretical and practical materials on the design of high-frequency circuit EMC.
This is the information specially prepared by Gao Zhendong when computers began to become popular. Just as he was about to be made public, the comrades from the Third Branch came to the door first.
EMC, electromagnetic compatibility.
Of course, Gao Zhendong's set of things is different from the electromagnetic compatibility design of multiple radars, communications and other equipment on ships and aircraft. It is not that tall and focused on small electronic systems. How can you? Design the EMC of an electronic device well to minimize the impact of EMI (electronic interference) on the circuit. EMI has a particularly serious impact on small signals and high frequency circuits. If before that, EMC had a miracle due to the strong signal and the frequency was not high, then Gao Zhendong showed his skills and made a big move. In the context of popularizing computers in advance by more than ten or twenty years in advance, this thing is very important.
The set that Gao Zhendong has come up with has some theory and more practices. It basically uses common methods of EMC design in high-frequency circuits from now until 60 years later. After all, many methods are the ones that can be used just by hand.
Holding this set of things in your hand, the technician of the third-branch was so excited that heirlooms! A family heirloom! Just this thing can solve most of the problems in themselves and even all small electronic devices EMC in one fell swoop.
But he knew in his heart that he could not take this thing back and pass it on to the family because the turtle went to heaven - there were regulations (turtle ass). "Okay, Mr. Gao, let's learn this set of EMC information first, and then wait for you to give us the information on power supply design, and strive to solve the electromagnetic compatibility problems of CNC machine tools in power supply and circuits."
At this time, for him, the absolute multi-turn encoder that has been clearly solved is not even the most important.
Power interference, circuit interference, and actuators, Mr. Gao raised three problems, and then gave three solutions to solve this problem completely.
Looking at them, Gao Zhendong remembered a famous saying - "I've come here."
He asked with a smile, "Since you've come, think about it, what other questions are there? See if there is any solution."
Gao Zhendong can get the details for it. There are many solutions to come up, and as long as the problem is asked, the probability of being solved is very high.
No mistakes, one poem, one post, one content, one in 6, one book, one bar, one read!
After all, his professionalism is the famous "DoubleE" (Electrical Engineering), which is related to electricity. It has touched everything except power generation, which has led to a lot of strange information in his hands.
Master and technicians from the third branch factory look at me and I look at you. "Mr. Gao, we have an idea, but we don't know if it can be realized." "Tell me," Just have an idea, but I'm afraid there is no idea.
"Our current motors have constant speed and torque, which leads to a problem. When the machine tool is working, when you want to change the speed and torque, you need to use a mechanical speed change mechanism to complete it. , the structure is complex and the failure rate is high, the volume is large, the inertia is large, and the speed that can be changed is also divided into multiple gears, making it difficult to accurately and continuously change speed. "
Everything else is easy to understand, the inertia is large, and the inertia is large. , in fact, it is also a big trouble, which means it is difficult to quickly and safely change the output speed of the motor.
Gao Zhendong is happy, you will measure in advance. We just started doing it, and you have found the application direction first. "I understand this. In this way, you are still using a mechanical speed changer for the time being, but don't worry, in the near future, you can use the motor speed to control the motor more easily. It is systemic, and it has all electronic, and the speed control mechanism has almost no mechanical parts. It can be operated continuously at 100% of the rated speed within 10~100% of the rated speed. Well...you can call it a frequency converter motor . "
Mechanical transmissions are still important. We should develop and develop. However, the advantages of variable frequency motors here are too great.
The future that Gao Zhendong talked about made comrades yearn for.
"Full load of 10%~100% speed regulation?"
"Continuous?"
"All electronic?"
Inverter motors originally appeared in the late 1960s and have a wide range of applications. In any high-precision occasion, they are basically theirs. The world of descendants.
Gao Zhendong nodded: "Well, but it won't take a short time. It will take some time. You should do mechanical speed adjustment first. Don't stop your steps."
" OK, Mr. Gao, we know." The people in the third branch factory were very happy. They knew that what Mr. Gao said was "short time", that was really short time, and this time would not be too long.
At that time, you only need to replace the huge, bulky and mechanical speed-changing motor system with many disadvantages with this new motor, which can bring the function and performance of the product to a higher level.
Send them away, Gao Zhendong turned around and continued his work.
(This chapter ends)