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| 型號(hào)： | MC1451A-E |
| 廠商： | Electronic Theatre Controls, Inc. |
| 英文描述： | Advanced Brushless Motor Control Chipset |
| 中文描述： | 先進(jìn)的無刷電機(jī)控制芯片組 |
| 文件頁數(shù)： | 18/70頁 |
| 文件大小： | 474K |
| 代理商： | MC1451A-E |
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18
MC1231A-Series Chipset Operational Parameters
Available configurations:
2 axes with internal sinusoidal commutation (MC1231A)
1 axes with internal sinusoidal commutation (MC1131A)
Closed loop (motor command is driven fromoutput of servo filter)
Open loop (motor command is driven fromuser-programmed register)
-1,073,741,824 to 1,073,741,823 counts
-16,384 to 16,383 counts/sample with a resolution of 1/65,536 counts/sample
S-curve profile: - 1/2 to + 1/2 counts/sample2 with a resolution of 1/65,536 counts/sample2.
All others: -16,384 to 16,383 counts/sample2 with a resolution of 1/65,536 counts/sample2
-1/2 to +1/2 counts/sample3, with a resolution of 1/4,294,967,296 counts/sample3
S-curve (host commands final position, max velocity, max acceleration, and jerk)
Trapezoidal (host commands final position, max velocity and acceleration)
Velocity contouring (host commands max. velocity, acceleration)
Electronic Gear (Encoder position of one axis is used as position command for another axis). A total of 2
electronic gears are supported (2 encoders and 1 output each). Not available in MC1131A
32768:1 to 1:32768 (negative and positive direction)
PID+Velocity feedforward and motor bias
16 bits
Sinusoidal
Hall-Based
Algorithmc (briefly energize motor coils)
Mcrostepping (advance motor to known phase position)
Direct set (explicitly set current commutation angle)
256 per electrical cycle
129 to 2,097,088 (using pre-scalar) counts per electrical cycle
15 kHz
120 degrees (used with 3-phase brushless motors)
90 degrees (used with 2-phase brushless motors)
3-phase brushless motors: 3
2-phase brushless motors: 2
2 (all motor types)
1.75 Mcounts/sec
270 uSec*mnimum 4,423 mSec max.
270 uSec*per enabled axis.
2 (one for each direction of travel)
2 (index, home signal)
160 nSec
116
Operating Modes:
Position Range:
Velocity Range:
Acceleration Range:
Jerk Range:
Trajectory Profile Generator Modes:
Electronic Gear Ratio Range:
Filter Modes:
Filter parameter resolution:
Commutation Waveform
Phase Initialization Methods:
#of sinusoidal lookups:
range of commutation cycle:
Commutation rate:
Phasing Modes:
#of PWMOutput Phases:
#of DAC Output Phases:
Max Incremental. Encoder Rate:
Servo loop rate range:
Max servo loop rate:
#of limt switches per axis
#of position capture triggers:
Capture trigger latency:
#of Host commands:
*Exact servo loop time is 271.36 uSec, 270 is an approximation
Trajectory Profile Generation
The trajectory profile generator performs calculations to determne the
target position, velocity and acceleration at each servo loop. These
calculations are performed using the current profile mode and profile
parameters set by the host. Four trajectory profile modes are supported:
- S-curve point to point
- Trapezoidal point to point
- Velocity contouring
- Electronic Gear
The commands to select these profile modes are
SET_PRFL_S_CRV (to select the s-curve mode), SET_PRFL_TRAP
(to select the trapezoidal mode) SET_PRFL_VEL (to select the
velocity contouring mode) and SET_PRFL_GEAR (to select the
electronic gear mod).
Throughout this manual various command mnemonics will be
shown to clarify chipset usage or provide specific examples. See
the Host Communications section for a description of host
command nomenclature.
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