If the steady-state error of unity feedback control system to a ramp input is constant, then the system is a type system
A: 0
B: I
C: II
D: III
A: 0
B: I
C: II
D: III
举一反三
- A type-1 system has a zero steady-state tracking error to a ramp input.
- The open-loop transfer function of the unity-feedback control system is G(s)=5/(s(s+2)) . When input is the unit-step,the steady-state error is .
- keeping the homeostasis<br/>of the internal environment depends on the () A: Non-automatic<br/>control system B: Negative<br/>feedback control system C: positive<br/>feedback control system D: Feed-forward<br/>control system E: nervous<br/>and endocrine regulation.
- What’s the type of the control system on CFM56-3 engine? ( ) A: pneumatic mechanical system B: EEC system C: FADEC system D: hydro-mechanical system
- Which of the following are features of an effective coding system? A: i), ii) and iii) B: i), ii), iii) and iv) C: i), iii) and iv) D: ii) and iv)