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| 型号： | OMC510 |
| 英文描述： | DSP-Based Three-Phase Brushless DC Motor Controller(基于DSP的三相无刷直流电机控制器) |
| 中文描述： | 基于DSP的三相无刷直流电动机控制器（基于数字信号处理器的三相无刷直流电机控制器） |
| 文件页数： | 4/8页 |
| 文件大小： | 52K |
| 代理商： | OMC510 |
OMC510
Rev 03 09/27/00
205 Crawford Street
Leomnster MA 01453
Phone: 978 534 5776
Fax: 978 537 4246
www.omnirel.com
4
FUNCTIONAL DESCRIPTION
Inverter
The three-phase inverter consists of power MOSFETs which utilize advanced processing techniques to
9876s controlled to regulate the shaft speed with a Proportional-Integral (PI) regulator.
Current Sense
A single precision current sense resistor (1% tolerance), combined with a sophisticated algorithm, eliminates
the need for separate phase current sense resistors while still providing disturbance torque information to
improve the efficiency and robustness of the system.
Gate Drive
The gate drive section incorporates high speed power MOSFET drivers with independent high and low side
referenced output channels. The gate driver design, in conjunction with the inverter design, provides for low
noise inverter operation.
Protection
Protection from short circuit conditions is provided by disabling the controller without damage to the
inverter. Under-voltage protection is provided in the gate drive section thus preventing damage to the
inverter due to insufficient gate drive voltage.
PWM System
Space Vector Modulation (SVM) is employed to provide better bus utilization, lower torque ripple, and
lower commutation losses than the standard sinusoidal PWM method. In addition, other benefits of SVM
versus the sinusoidal PWM method include ease of control and quicker response.
Motor Control Algorithms
The OMC510 can be configured for trapezoidal drive using either Hall effect sensors for absolute rotor
position feedback or a sensorless Back-EMF zero crossing detection scheme. Consult the factory for
ordering information.
Speed Regulator
The OMC510 accepts speed commands from either an isolated RS-232 port or an analog input (0 to 3V).
The speed command is compared with the estimated shaft speed and the motor torque is controlled to
regulate the shaft speed with a Proportional-Integral (PI) regulator.
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