According to the characteristics of the control system, CNC machine tools can be divided into ( ),( ) and contour control machine tools.
A: Point to Point Control
B: open-loop control
C: line motion control
D: closed-loop control
A: Point to Point Control
B: open-loop control
C: line motion control
D: closed-loop control
举一反三
- Closed-loop control system is an automatic control system. Open-loop control system is not an automatic control system.
- A process of comparing the actual performance of a machine with the intended performance, and the adjusting the machine to reduce and eventually eliminate the difference between the actual and intended performance is called（） A: open loop control B: feedback C: combining control D: integral proce
- A process of comparing the actual performance of a machine with the intended performance,and then adjusting the machine to reduce and eventually eliminate the difference between the actual and intended performance is called______. A: open loop control B: feedback C: combining control D: integral process
- _____________ congestion control to remove the congestion in a network once it occurred. A: open loop B: end loop C: closed loop
- Which of the following descriptions is wrong about the control of an air conditioner?_____ A: The control position can be divided into remote control and local control. B: In local control, the automatic control system also needs to work. C: If the remote control doesn't work, the air conditioner won't work. D: In case of control system failure, manual control mode can be adopted.