The speed control research on rotary valve driven by micromotor in MWD
| Autor: | Yue Shen, Gaixing Hu, Lingtan Zhang, Lingzhi Wei, Limin Sheng, Jia Jia |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
010302 applied physics
Physics Electronic speed control Feed forward Servo control PID controller Rotational speed 02 engineering and technology 021001 nanoscience & nanotechnology Condensed Matter Physics Rotation 01 natural sciences Electronic Optical and Magnetic Materials Step response Hardware and Architecture Control theory Control system 0103 physical sciences Electrical and Electronic Engineering 0210 nano-technology |
| Zdroj: | Microsystem Technologies. 28:229-236 |
| ISSN: | 1432-1858 0946-7076 |
| DOI: | 10.1007/s00542-019-04620-y |
| Popis: | The rotary valve speed control, extremely affected by nonlinear dependence of rotary valve load torque on rotation angle, affects the generation of drilling fluid pressure PSK signal and its quality. Based on load torque calculation model, the load torque feed forward compensation is used in linearized correction of rotation speed control system to enable the motor voltage to vary according to the calculation model. Additionally, the calculation model is also used in compensating the influence of serious nonlinearity in rotary valve load torque on rotation speed control. By means of closed-loop proportional-integral-derivative (PID) control which is formed by negative feedback of speed and the PID parameter values determination rule which is created by attenuating control of transient component in step response of rotary valve speed, the rapid servo control of rotary valve speed is realized. Simulink Simulation indicates that the closed-loop speed control system of rotary valve is able to track the change of control voltage pulse quickly and strongly suppress the interference influences from flow measurement error and load torque calculation model deviation. |
| Databáze: | OpenAIRE |
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