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Working characteristics

It is often expressed by the relationship between output and input, or between one output and another output. In terms of control requirements, the static characteristic curve shall be continuous and smooth without sudden change; Dynamic characteristics are often represented by frequency curve or response curve. The frequency curve shall be stable without sudden jump and oscillation point; The response curve shall converge rapidly.

sensitivity

The size of the output amount corresponding to the unit input signal. It is generally expressed by specific torque, specific electromotive force, amplification factor, etc.

accuracy

Under certain input conditions, the difference between the actual value and the theoretical value of the output signal represents the accuracy of the micromotor, which is often expressed by the size of the error.

Impedance or resistance

In the system, the input and output impedance of the micromotor shall be matched with the corresponding circuit respectively to ensure the operation performance and accuracy of the system.

reliability

It is not only the special requirement of micro motor for control, but also that of driving micro motor and power micro motor. Service life, failure rate, reliability and mean time between failures are commonly used to characterize the operation reliability of micromotors.

In short, the micro motor industry is a labor-intensive and technology intensive high-tech industry.

Industry Review

China's micro motor industry was founded in the late 1950s. Starting from meeting the needs of national defense weapons and equipment, it has experienced the stage of imitation, self-design and research and development. It has a development history of more than 40 years. It has formed a complete industrial system of product development, large-scale production and supporting key parts, key materials, special manufacturing equipment and testing instruments. According to statistics, there are more than 1000 micro and special motor manufacturers and supporting manufacturers in China, with more than 100000 employees and a total industrial output value of more than 10 billion yuan. Micro motor industry has become an indispensable basic product industry in the national economy and national defense modernization.