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参数资料
| 型号： | MC1451A-E |
| 厂商： | Electronic Theatre Controls, Inc. |
| 英文描述： | Advanced Brushless Motor Control Chipset |
| 中文描述： | 先进的无刷电机控制芯片组 |
| 文件页数： | 17/70页 |
| 文件大小： | 474K |
| 代理商： | MC1451A-E |
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17
Theory of Operations
DAC data
Incremental Encoder
Trajectory profile
generator (2)
Digital Servo
filtering (2)
Host I/O controller
Index
B
A
Internal Block Diagram
host interrupt
Data
Control
PWM mag.
DAC address
Motor Output
System Registers (2)
16
1/a
1/a
1/a
1/phase
2
1
8
5
Quadrature
decoder
counter (2)
Index capture
register (2)
Position
register (2)
Host command
DAC, PWM signal generator (6 channels)
Home
1/a
PosLimit
1/a
NegLimit
1/a
Commutation
Generator (2)
I/O Chip
CP Chip
The above figure shows an internal block diagramfor the MC1231A
motion processor.
Each servo axis inputs the actual location of the axis using incremental
encoder signals. These encoder signals are digitally filtered for
increased reliability and then passed on to a high speed up/down
counter. This counter is used to maintain a 32-bit actual axis position
register.
The chipset can be operated in two modes. Closed loop mode, which is
the normal operating mode of the chipset, performs trajectory
generation, digital servo loop closure, and sinusoidal commutation. In
this mode the motor output value is controlled by the servo filter. Open
loop mode performs commutation only. It allows the motor output value
to be controlled directly by the host processor.
For either operating mode the desired motor output value is then
combined with the current commutation value froman internal
sinusoidal lookup. The commutation angle is determned using the
motor encoder. Two or more commutated signals are generated for
each axis, with each signal being shifted either 90 or 120 degrees from
one another, depending on the motor type.
The resultant commutated signals are then output to the amplifier either
as PWMor DAC signals.
To performcontinuous digital servoing, the trajectory and servo
calculations are performed at every sample time for all enabled axes.
The commutation is performed 4 times for each sample time.
The following table summarizes the operational parameters of the
MC1231A-series chipsets.
相关PDF资料 |
PDF描述 |
|---|---|
| MC1101A-P | Advanced Brushless Motor Control Chipset |
| MC1211N | LSI CMOS |
| MCY1210N | LSI CMOS |
| MC14005N | 8-function calculator unit co-operating with LED display |
| MC74005N | 8-function calculator unit co-operating with LED display |
相关代理商/技术参数 |
参数描述 |
|---|---|
| MC1451CCP | 制造商:PMD 功能描述: |
| MC14520B | 制造商:Motorola Inc 功能描述: 制造商:ON Semiconductor 功能描述: |
| MC14520BAL | 制造商:Motorola Inc 功能描述:Counter, Up, 4 Bit Binary, 16 Pin, Ceramic, DIP |
| MC14520BCP | 功能描述:计数器移位寄存器 3-18V Dual BCD Up RoHS:否 制造商:Texas Instruments 计数器类型: 计数顺序:Serial to Serial/Parallel 电路数量:1 封装 / 箱体:SOIC-20 Wide 逻辑系列: 逻辑类型: 输入线路数量:1 输出类型:Open Drain 传播延迟时间:650 ns 最大工作温度:+ 125 C 最小工作温度:- 40 C 封装:Reel |
| MC14520BCPG | 功能描述:计数器移位寄存器 3-18V Dual BCD Up RoHS:否 制造商:Texas Instruments 计数器类型: 计数顺序:Serial to Serial/Parallel 电路数量:1 封装 / 箱体:SOIC-20 Wide 逻辑系列: 逻辑类型: 输入线路数量:1 输出类型:Open Drain 传播延迟时间:650 ns 最大工作温度:+ 125 C 最小工作温度:- 40 C 封装:Reel |
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