1) Synchronous motors operate at synchronous speed.

2) According to the requirements of synchronous speed control of series conveying belt, several patterns which could realize the synchronous speed control under frequency conversion was analyzed.

3) Because the AC asynchronous motor' synchronous speed is determined by the frequency,(http:///synchronous speed.html) we can control the AC asynchronous motor' speed by changing the supply power's frequency.

4) According to the features of the carpet washes drying machine, a synchronous speed controls system based on PLC and the swinging arm compensator was introduced.

5) The low. speed range comes to 30 percent of synchronous speed of the machine.

6) The efficiency of PLC control is increased at high speeds up to 95% of the synchronous speed.

7) The network, the rotor speed models are also introduced, and the double synchronous speed mathematical model has been deduced and set up in this paper.

8) Equipment and tape automation, gas deflection anti - corrosion synchronous speed.

9) Its rotor's change changes same as the rotary field, but the rotational speed slightly is higher than the rotary field the synchronous speed.

10) The coupled dc motor can be adjusted so that the speed of the system is higher than the synchronous speed and the system rotates in the same direction as the stator rotating field.

11) The utility model relates to a six speed fully synchronous speed changer for a vehicle, belonging to a mechanical transmission device for an automobile.

12) Secondly, the network, the rotor speed models are also introduced, and the double synchronous speed mathematical model has been deduced and set up in this paper.

13) The effectiveness of the PLC-based control software is satisfactory up to 96% of the synchronous speed.

14) In the process, the instantaneous speed of the drive system is higher than the instantaneous synchronous speed because of the inertia of the drive system.

15) According to the features of the dyeing industry, a synchronous speed controls sy stem based on PLC and digital technology was introduced.

16) A synchronous condenser is nothing more than a synchronous machine running at synchronous speed with no mechanical load.