readme.txt

无刷电机驱动器源代码。基于无传感器方案的无刷电机启动器。核心是换向角度检测：即电机反电势波形数据处理

Brushless DC Motor Control Application

This application is designed to drive a Pittman N2341S001 brushless DC motor.
The commutation sequence and PID controller tuning may need to be modified when
using a different motor; the PID controller can be tuned for different response
behavior of the Pittman motor.

The rotational speed of the motor is measured with either the quadrature
encoder module (if present in hardware) or a software interface to the optical
encoder.  When requested, the measured speed is used to perform closed loop
speed control of the motor.

A simple user interface is provided on UART0 operating at 115,200, 8-N-1.  The
status is provided in the following format:

    Cr s:1000 a:0996
    ab   cccc   dddd

Where 'a' is "C" for closed loop operation and "O" for open loop operation, 'b'
is 'r' for running and 's' for stopped, 'cccc' is the target motor speed, and
'dddd' is the measured motor speed.

The following commands are available:

    r   Start/stop the motor.
    l   Toggle between open and closed loop operation.
    p   Set a new proportional gain factor for the motor speed PID controller.
    i   Set a new integral gain factor for the motor speed PID controller.
    d   Set a new differential gain factor for the motor speed PID controller.
    z   Display the current gain factors for the motor speed PID controller.
    D   Toggle display of each motor speed sample (every 1/100th of a second).

See the accompanying application note for full details of these commands.

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Copyright (c) 2005,2006 Luminary Micro, Inc.  All rights reserved.

Software License Agreement

Luminary Micro, Inc. (LMI) is supplying this software for use solely and
exclusively on LMI's microcontroller products.

The software is owned by LMI and/or its suppliers, and is protected under
applicable copyright laws.  All rights are reserved.  Any use in violation of
the foregoing restrictions may subject the user to criminal sanctions under
applicable laws, as well as to civil liability for the breach of the terms and
conditions of this license.

THIS SOFTWARE IS PROVIDED "AS IS".  NO WARRANTIES, WHETHER EXPRESS, IMPLIED OR
STATUTORY, INCLUDING, BUT NOT LIMITED TO, IMPLIED WARRANTIES OF MERCHANTABILITY
AND FITNESS FOR A PARTICULAR PURPOSE APPLY TO THIS SOFTWARE.  LMI SHALL NOT, IN
ANY CIRCUMSTANCES, BE LIABLE FOR SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES,
FOR ANY REASON WHATSOEVER.

This is part of revision 196 of an01238.