我正在对我的差动驱动移动机器人(e-puck)进行编程,使其移动到具有特定方向的特定坐标。机器人到达坐标没有问题,但是当它到达坐标时,它不能确定具体的方向,并在现场“旋转”寻找方向,有人在这方面有经验吗?我被困在这个问题上很长时间了,真的希望有人知道为什么。下面粘贴了代码的相关部分。
static void step() {
if (wb_robot_step(TIME_STEP)==-1) {
wb_robot_cleanup();
exit(EXIT_SUCCESS);
}
}
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static void set_speed(int l, int r)
{
speed[LEFT] = l;
speed[RIGHT] = r;
if (pspeed[LEFT] != speed[LEFT] || pspeed[RIGHT] != speed[RIGHT]) {
wb_differential_wheels_set_speed(speed[LEFT], speed[RIGHT]);
}
}
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static void goto_position1(float x, float y, float theta)
{
if (VERBOSE > 0) printf("Going to (%f, %f, %f)\n",x,y,theta);
// Set a target position
odometry_goto_set_goal(&og, x, y, theta);
// Move until the robot is close enough to the target position
while (og.result.atgoal == 0) {
// Update position and calculate new speeds
odometry_track_step(og.track);
odometry_goto_step(&og);
// Set the wheel speed
set_speed(og.result.speed_left, og.result.speed_right);
printf("%f",ot.result.theta);
print_position();
step();
} //after exiting while loop speed will be zero
og.result.speed_left = 0;
og.result.speed_right = 0;
if (((og.result.speed_left == 0) && (og.result.speed_right == 0)) )
og.result.atgoal = 1;
return;
}
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int main(){
//initialisation
while (wb_robot_step(TIME_STEP) != -1) {
goto_position1(0.0000000001,0.00000000001,PI/4);
}
return 0;
}发布于 2013-11-04 23:21:04
我没有好处知道你的og结构的内容是什么,所以假设有提供当前位置信息的成员(我假设他们是posx & posy),你应该在阅读完最新位置后的某个时候有一个测试语句,如下所示:
编辑重新定位的set_speed()
while (og.result.atgoal == 0)
{
// Update position and calculate new speeds
odometry_track_step(og.track);
odometry_goto_step(&og);
if(((og.result.posx - x) > 3) || (og.result.posy - y) > 3) //(distance assumed in mm)
{
//then report position, continue to make adjustments and navigate
printf("%f",ot.result.theta);
print_position();
// Set the wheel speed
set_speed(og.result.speed_left, og.result.speed_right);
step();
}
else
{
//set all speeds to 0
//report position.
//clear appropriate struct members and leave loop
}
} //after exiting while loop speed will be zero发布于 2013-11-05 01:51:00
我终于找出了问题所在,因为我无法走出while循环,机器人无法停止搜索方向。谢谢你的启发。
https://stackoverflow.com/questions/19769396
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