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用PIC17C42作直流电刷电机伺服控制器原理及实例
消耗积分:10 |
格式:rar |
大小:1024 |
2009-06-29
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The PIC17C42 microcontroller is an excellent choice for
cost-effective servo control in embedded applications.
Due to its Harvard architecture and RISC features, the
PIC17C42 offers excellent computation speed needed
for real-time closed loop servo control. This application
note examines the use of the PIC17C42 as a DC brush
motor servo controller. It is shown that a PID (Proportional,
Integral, Differential) control calculation can be
performed in less than 200ms (@16 MHz) allowing control
loop sample times in the 2 kHz range. Encoder rates
up to 3 MHz are easily handled by the PIC17C42's high
speed peripherals. Further, the on-chip peripherals allow
an absolute minimum cost system to be constructed.
cost-effective servo control in embedded applications.
Due to its Harvard architecture and RISC features, the
PIC17C42 offers excellent computation speed needed
for real-time closed loop servo control. This application
note examines the use of the PIC17C42 as a DC brush
motor servo controller. It is shown that a PID (Proportional,
Integral, Differential) control calculation can be
performed in less than 200ms (@16 MHz) allowing control
loop sample times in the 2 kHz range. Encoder rates
up to 3 MHz are easily handled by the PIC17C42's high
speed peripherals. Further, the on-chip peripherals allow
an absolute minimum cost system to be constructed.
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