电镀物品-水力伺服作动器dsp控制(英文)(pdf 26页)

1 Introduction …………........... 2
2 The C2000 DSP for Digital Control………….......... 3
3 Typical Hydraulic System Description …………...... 5
4 Hydraulic System Modelling………….................. 9
5 Case Study………….......... 14
6 Summary …………............ 20
7 References………….......... 21
Appendix A Simulink Models ………….................... 22
Appendix B List of Symbols …………..................... 25
1 Block Diagram of the TMS320F280x DSP Family ............................................. 4
2 Block Diagram of a Position Controlled Hydraulic Servo System ............................ 5
3 Diagram of Three Land, Four-way Flow Control Valve Spool ................................ 6
4 Cross Section of Nozzle-flapper Type Servo-valve (illustration courtesy of Moog)........ 7
5 Linear Servo-Hydraulic Actuator Assemblies (illustration courtesy of Moog)............... 8
6 Cross-sectional Diagram of Double-ended, Double-acting Linear Actuator ................ 8
7 Block Diagram of the Analogue Controller …………. 9
8 Valve Torque Motor Assembly (illustration courtesy of Moog) .............................. 10
9 Valve Responding to Change in Electric Input (illustration courtesy of Moog)............ 10
10 Typical Servo-valve Frequency Response Curve (illustration courtesy of Moog) ........ 11
11 Servo-valve Flow-pressure curves (illustration courtesy of Moog) ......................... 12
12 Simulated Actuator Step Response …………....... 16
13 Step Response of Piston Chamber Pressures................................................ 17
14 Step Response of High-Performance Linear Actuator ....................................... 17
15 Frequency Response of High-Performance Linear Actuator ................................ 18
16 Low Frequency Test on Low Friction Linear Actuator........................................ 18
17 Low Frequency Test on Linear Actuator with Significant Friction........................... 19
A-1 Top Level System Diagram…………................. 22
A-2 Simulink Model of Hydraulic Actuator …………..... 23
A-3 Simulink Model of Servo-Valve…………............. 24
List of Tables
1 Actuator Data …………....... 14
2 Servo-valve Data…………... 15
3 Miscellaneous System Data …………................ 15
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