What is dc and ac servo motor?? What are the features?
Upstairs said too much load is professional enough ` ` ` ` ` ` dc servo motor servo motor is better in terms of regulating speed But in the ac servo motor in with local power was not rarely used ` ` ` ` ` ac and dc servo motor has brought my brush There are ac motor without brush with brush can adjust the power of the rotor to realize the speed of the motor But in a motor with brush need to use a period of time will have to change the brush each have an advantage See you in what place ` ` `
Input or output a rotating motor for direct current energy. Its simulation speed control system is generally composed of two closed-loop, speed closed-loop and current closed-loop already, in order to make the two can coordinate with each other, play a role, set up two controller in the system, adjusting the rotational speed and current respectively. Two feedback closed loop on structure by using a nested structure of ring set of a ring, this is the so-called double closed loop speed regulation system, it has the advantages of quick dynamic response, strong anti-interference ability, thus is widely used. Usually consists of a PI or PID circuit by analog transport. Signal conditioning is mainly used to filter and enlarge the feedback signal. Considering the mathematical model of the dc motor, the simulation speed control system dynamic transfer function relationship in the process of simulation of the speed regulation system debugging, due to the parameters of the motor or load mechanical characteristics have a great difference with the theoretical value, often require frequent replacement R, C and other components to change circuit parameters, in order to obtain the desired dynamic performance indicators, very trouble to do so, if applied by programmable analog device controller circuit, system parameters such as gain, bandwidth, and even circuit structure can be modified by the software, debugging is very convenient
There is no brush and commutator, so the work is reliable and requires low maintenance and maintenance. It is convenient to heat the heat of the stator winding. The inertia is small and easy to improve the speed of the system. It is adapted to the high speed torque. There is a smaller volume and weight under the same power.
