Mechanical essay (II.)

The motor is an electromechanical energy conversion or signal conversion electromagnetic mechanical device.

Reading the history of Mechatronics an important point of cognition is that any great invention is accomplished after countless experiments and long periods of development. From the gravitational wave was proposed to now for a full 30 years, resonant aluminum rods to Michael Interferometer, ground interference to the measurement of space interference, this ligo measurement is also a chance can not be accidental opportunity, can only say that people are not as good as the days, Kung fu is not a conscientious. The law of electromagnetic induction proposed in 1831, nearly a century of the efforts of the sages, various theories of the continuous proposed and perfected so that we can later in our daily life to enjoy the convenience of motor.

A man who is qualified to spit his tongue

However, enjoy the enjoyment of the core technology, the process of exploration and development has been controlled in the west, and the same is the mechanical revolution we have not been able to catch up with the gradual accumulation of these experience is our current China is very difficult to do in the past, we are not so easy to catch up with the Western developed countries and Japan's industrial level, There is no doubt that, in line with what has been said before, our 5,000 years of cultural accumulation and technical accumulation is not deep, these technologies can not enable the rapid development of society, individuals think, may be equated with its technical content is not high enough. For example, we are proud of the ceramic, exported to overseas, Western countries as if treasures, of course, there will be Westerners for huge profits to explore the production methods of ceramics, they are relatively easy to obtain the production method (unfortunately, the technical secrecy awareness), but still do not make good-looking porcelain, Until an exploration discovered the importance of soil composition (perhaps we did not analyze it carefully), they could produce fine porcelain. However, the technology of the mechanical revolution and the electric revolution is the technology that can greatly improve the production capacity, correspondingly, the technical accumulation of the details is relatively numerous, and now the secrecy measures are more perfect. I can only say that we have a long way to go.

Western porcelain

In addition, the teacher's abstract model especially the concept of power interchange, the potential variables and flow variables in the multi-port system, generalized momentum and generalized displacements are also impressive. The teacher's understanding of the system is not very deep, perhaps we learn too little, but the teacher constantly toward a higher level of understanding to lead or very grateful.

Electrical systems and mechanical systems can be expressed in a system of linear equations that are more high-end because of the high-level tensor analysis class that covers the vector analysis of the electrical system, I silently wait for the text.

The defect of DC motor, open type according to the model Reactance is too low to generate a large current.

The code is as follows: added inductance

Model Motor1 Real Tm; Real N; Real i; Real u; Parameter Real J = 0.01; Parameter Real R = 0.1; Parameter Real Kt = 1.1; Parameter Real Ke = 0.9; Parameter Real Km = 0.01; Parameter Real Tl = 2; Equation If time <= 0.1 Then U = 50; Else u = 100; End If; TM-TL = J * der (n); tm= Kt * i; u= i * R + Ke * n+km * der (i); End Motor1;

km=0.001

KM more normal to the original image when taking 0.01

KM when taking 0.8 completely deviate from

Mechanical essay (II.)