Automatic control by meiling chen1 Lesson 10 System design

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Transcript of Automatic control by meiling chen1 Lesson 10 System design

  • Slide 1
  • Automatic control by meiling chen1 Lesson 10 System design
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  • Automatic control by meiling chen2 Example : An Armature control DC motor Armature circuitField circuit constant
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  • Automatic control by meiling chen3 + - Design controller Sensor
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  • Automatic control by meiling chen4 Case I : Proportional control Characteristic function :
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  • Automatic control by meiling chen5 Open loop transfer function :
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  • 7 Type I system
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  • Automatic control by meiling chen8 G.M. P.M.
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  • Automatic control by meiling chen9 g1=zpk([],[0 1 5],[10]) margin(g1)
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  • Automatic control by meiling chen10 Case II : Proportional Integral control + - Sensor Open loop transfer function : a zero a pole
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  • Automatic control by meiling chen11 Type II system The system order
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  • Automatic control by meiling chen15 g2 (PI controller) is unstable g1 (P controller) is stable
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  • Automatic control by meiling chen16 Case III : Proportional derivative control + - Sensor Open loop transfer function : a zero
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  • Automatic control by meiling chen17 Type I system
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  • Automatic control by meiling chen21 Case IV : Proportional Integral derivative control + - Open loop transfer function :
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  • Automatic control by meiling chen22 Open loop transfer function : Type II system
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  • Automatic control by meiling chen25 Case V : phase lead control Case VI : phase lag control
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  • Automatic control by meiling chen26 + - Phase lead: Phase lag:
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  • Automatic control by meiling chen27 Green phase lead G.M. P.M.
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  • Automatic control by meiling chen28 Phase lead
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  • Automatic control by meiling chen29 Green phase lag G.M. P.M.
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  • Automatic control by meiling chen30 Phase lag