Dependencies: mbed
main.cpp@2:c507076bfd93, 2019-03-22 (annotated)
- Committer:
- shut
- Date:
- Fri Mar 22 15:22:15 2019 +0000
- Revision:
- 2:c507076bfd93
- Parent:
- 1:ef1f9f676295
- Child:
- 3:a0b0e4acf5e9
- Child:
- 4:5a892f5ab5a8
TESTING BALLS
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
jsobiecki | 0:719ea21609f1 | 1 | #include "mbed.h" |
jsobiecki | 0:719ea21609f1 | 2 | #include "Robot.h" |
jsobiecki | 0:719ea21609f1 | 3 | #include "math.h" |
jsobiecki | 0:719ea21609f1 | 4 | #define M_PI 3.14159265358979323846 |
jsobiecki | 0:719ea21609f1 | 5 | //EXERCICIO 1 |
jsobiecki | 0:719ea21609f1 | 6 | //Luis Cruz N2011164454 |
jsobiecki | 0:719ea21609f1 | 7 | //Jacek Sobecki |
jsobiecki | 0:719ea21609f1 | 8 | Serial pc(SERIAL_TX, SERIAL_RX, 115200); |
jsobiecki | 0:719ea21609f1 | 9 | DigitalIn button(PC_13); |
jsobiecki | 0:719ea21609f1 | 10 | void poseEst(float p[], float radius, float enc_res, float b); |
jsobiecki | 0:719ea21609f1 | 11 | void SpeedLim(float w[]); |
shut | 2:c507076bfd93 | 12 | //int ReadSensors(); |
shut | 2:c507076bfd93 | 13 | void updateHist(int hist[][], int active[][],int x,int y); |
jsobiecki | 0:719ea21609f1 | 14 | int main(){ |
jsobiecki | 0:719ea21609f1 | 15 | |
jsobiecki | 0:719ea21609f1 | 16 | button.mode(PullUp); |
jsobiecki | 0:719ea21609f1 | 17 | getCountsAndReset(); |
jsobiecki | 0:719ea21609f1 | 18 | setSpeeds(0, 0); |
jsobiecki | 0:719ea21609f1 | 19 | while(button==1); |
jsobiecki | 0:719ea21609f1 | 20 | |
jsobiecki | 0:719ea21609f1 | 21 | //w[0] = Omega | w[1] = X | w[2] = Y |
jsobiecki | 0:719ea21609f1 | 22 | //p[0] = X | p[1] = Y | p[2] = Theta |
jsobiecki | 0:719ea21609f1 | 23 | //p_obj[0] = X | p_obj[1] = Y | p_obj[2] = Theta |
jsobiecki | 0:719ea21609f1 | 24 | //b = Distance between wheels, enc_res = Encoder Resolution, v = Calculated speed |
jsobiecki | 0:719ea21609f1 | 25 | //k_v = Speed gain, k_s = Curvature gain, wratio = Angular speed ratio control command |
shut | 2:c507076bfd93 | 26 | //Cells dim: 5x5cm | |
shut | 2:c507076bfd93 | 27 | const int = m = 200, n = 200, activeSize = 11; |
shut | 2:c507076bfd93 | 28 | int hist[m][n] , active[activeSize][activeSize]; |
shut | 2:c507076bfd93 | 29 | float w[3], v, p[3], p_obj[3], theta, theta_error, err, integral = 0.0; |
shut | 2:c507076bfd93 | 30 | const float radius = 3.5, b = 13.3, enc_res = 1440, k_v = 7, |
shut | 2:c507076bfd93 | 31 | k_s = 60, k_i = 1, sample_time = 0.05, Fcr = 1.0, d_stalker = 5.0; |
jsobiecki | 0:719ea21609f1 | 32 | // =============================================================================== |
jsobiecki | 0:719ea21609f1 | 33 | // =================================== COORDS ==================================== |
shut | 2:c507076bfd93 | 34 | // =============================================================================== |
jsobiecki | 0:719ea21609f1 | 35 | //Target coordinates |
shut | 2:c507076bfd93 | 36 | p_obj[0] = 400, p_obj[1] = 400, p_obj[2] = 0; |
jsobiecki | 0:719ea21609f1 | 37 | //Initial coordinates: |
shut | 2:c507076bfd93 | 38 | p[0] = 100, p[1] = 100, p[2] = 0; |
jsobiecki | 0:719ea21609f1 | 39 | // =============================================================================== |
jsobiecki | 0:719ea21609f1 | 40 | // =================================== EXECUTION ================================= |
jsobiecki | 0:719ea21609f1 | 41 | // =============================================================================== |
jsobiecki | 0:719ea21609f1 | 42 | while(1){ |
jsobiecki | 0:719ea21609f1 | 43 | getCountsAndReset(); |
jsobiecki | 0:719ea21609f1 | 44 | pc.printf("Speeds: Left=%lf Right=%lf\n", w[1], w[2]); |
shut | 2:c507076bfd93 | 45 | pc.printf("Odometer: X=%lf Y=%lf Theta=%lf\n", p[0], p[1], p[2]); |
jsobiecki | 0:719ea21609f1 | 46 | pc.printf("Position: X=%lf Y=%lf Theta=%lf\n", p[0], p[1], p[2]); |
shut | 2:c507076bfd93 | 47 | |
jsobiecki | 0:719ea21609f1 | 48 | //Path calculation |
shut | 2:c507076bfd93 | 49 | poseEst(p, radius, enc_res, b); //Pose estimation |
shut | 2:c507076bfd93 | 50 | //Control Law |
shut | 2:c507076bfd93 | 51 | err = sqrt(pow((p_obj[0]-p[0]),2)+pow((p_obj[1]-p[1]),2)) - d_stalker; //distance to the point |
jsobiecki | 0:719ea21609f1 | 52 | theta = atan2(p_obj[1]-p[1],p_obj[0]-p[0]); |
jsobiecki | 0:719ea21609f1 | 53 | theta = atan2(sin(theta),cos(theta)); |
jsobiecki | 0:719ea21609f1 | 54 | p[2] = atan2(sin(p[2]),cos(p[2])); |
jsobiecki | 0:719ea21609f1 | 55 | theta_error = theta-p[2]; |
shut | 2:c507076bfd93 | 56 | w[0] = k_s*(theta_error); //direction gain |
shut | 2:c507076bfd93 | 57 | integral += err |
shut | 2:c507076bfd93 | 58 | v = k_v*err+k_i*integral; //Speed gain |
jsobiecki | 0:719ea21609f1 | 59 | w[1] = (v-(b/2)*w[0])/radius; |
jsobiecki | 0:719ea21609f1 | 60 | w[2] = (v+(b/2)*w[0])/radius; |
jsobiecki | 0:719ea21609f1 | 61 | SpeedLim(w); |
jsobiecki | 0:719ea21609f1 | 62 | if((fabs(p[0]-p_obj[0])+fabs(p[1]-p_obj[1])) < 1){ |
jsobiecki | 0:719ea21609f1 | 63 | setSpeeds(0,0); |
jsobiecki | 0:719ea21609f1 | 64 | } |
jsobiecki | 0:719ea21609f1 | 65 | else{ |
jsobiecki | 0:719ea21609f1 | 66 | setSpeeds(w[1], w[2]); |
jsobiecki | 0:719ea21609f1 | 67 | } |
jsobiecki | 0:719ea21609f1 | 68 | wait(sample_time); |
jsobiecki | 0:719ea21609f1 | 69 | } |
jsobiecki | 0:719ea21609f1 | 70 | } |
jsobiecki | 0:719ea21609f1 | 71 | // =============================================================================== |
jsobiecki | 0:719ea21609f1 | 72 | // =================================== FUNCTIONS ================================= |
jsobiecki | 0:719ea21609f1 | 73 | // =============================================================================== |
jsobiecki | 0:719ea21609f1 | 74 | //Pose Estimation function |
jsobiecki | 0:719ea21609f1 | 75 | void poseEst(float p[], float radius, float enc_res, float b){ |
jsobiecki | 0:719ea21609f1 | 76 | float deltaDl, deltaDr, deltaD, deltaT; |
jsobiecki | 0:719ea21609f1 | 77 | deltaDl = ((float)countsLeft)*(2.0*M_PI*radius/enc_res); |
jsobiecki | 0:719ea21609f1 | 78 | deltaDr = ((float)countsRight)*(2.0*M_PI*radius/enc_res); |
jsobiecki | 0:719ea21609f1 | 79 | deltaD = (deltaDr + deltaDl)/2; |
jsobiecki | 0:719ea21609f1 | 80 | deltaT = (deltaDr - deltaDl)/b; |
jsobiecki | 0:719ea21609f1 | 81 | if(fabs(deltaT) == 0){ |
jsobiecki | 0:719ea21609f1 | 82 | p[0] = p[0] + deltaD*cos(p[2]) + deltaT/2; |
jsobiecki | 0:719ea21609f1 | 83 | p[1] = p[1] + deltaD*sin(p[2]) + deltaT/2; |
jsobiecki | 0:719ea21609f1 | 84 | return; |
jsobiecki | 0:719ea21609f1 | 85 | } |
jsobiecki | 0:719ea21609f1 | 86 | p[0] = p[0] + deltaD*(sin(deltaT/2.0f)/(deltaT/2.0f))*cos(p[2]+deltaT/2.0f); |
jsobiecki | 0:719ea21609f1 | 87 | p[1] = p[1] + deltaD*(sin(deltaT/2.0f)/(deltaT/2.0f))*sin(p[2]+deltaT/2.0f); |
jsobiecki | 0:719ea21609f1 | 88 | p[2] = p[2] + deltaT; |
jsobiecki | 0:719ea21609f1 | 89 | } |
jsobiecki | 0:719ea21609f1 | 90 | //Speed limiter function |
jsobiecki | 0:719ea21609f1 | 91 | void SpeedLim(float w[]){ |
jsobiecki | 0:719ea21609f1 | 92 | float wratio; |
jsobiecki | 0:719ea21609f1 | 93 | wratio = w[2]/w[1]; |
jsobiecki | 0:719ea21609f1 | 94 | if(w[2] > 150 || w[1] > 150){ |
jsobiecki | 0:719ea21609f1 | 95 | if(wratio < 1){ |
jsobiecki | 0:719ea21609f1 | 96 | w[1] = 150; |
jsobiecki | 0:719ea21609f1 | 97 | w[2] = w[1]*wratio; |
jsobiecki | 0:719ea21609f1 | 98 | } |
jsobiecki | 0:719ea21609f1 | 99 | else if(wratio > 1){ |
jsobiecki | 0:719ea21609f1 | 100 | w[2] = 150; |
jsobiecki | 0:719ea21609f1 | 101 | w[1] = w[2]/wratio; |
jsobiecki | 0:719ea21609f1 | 102 | } |
jsobiecki | 0:719ea21609f1 | 103 | else{ |
jsobiecki | 0:719ea21609f1 | 104 | w[2] = 150; |
jsobiecki | 0:719ea21609f1 | 105 | w[1] = 150; |
jsobiecki | 0:719ea21609f1 | 106 | } |
jsobiecki | 0:719ea21609f1 | 107 | } |
jsobiecki | 0:719ea21609f1 | 108 | if(w[2] < 50 || w[1] < 50){ |
jsobiecki | 0:719ea21609f1 | 109 | if(wratio < 1){ |
jsobiecki | 0:719ea21609f1 | 110 | w[1] = 50; |
jsobiecki | 0:719ea21609f1 | 111 | w[2] = w[1]*wratio; |
jsobiecki | 0:719ea21609f1 | 112 | } |
jsobiecki | 0:719ea21609f1 | 113 | else if(wratio > 1){ |
jsobiecki | 0:719ea21609f1 | 114 | w[2] = 50; |
jsobiecki | 0:719ea21609f1 | 115 | w[1] = w[2]/wratio; |
jsobiecki | 0:719ea21609f1 | 116 | } |
jsobiecki | 0:719ea21609f1 | 117 | else{ |
jsobiecki | 0:719ea21609f1 | 118 | w[2] = 50; |
jsobiecki | 0:719ea21609f1 | 119 | w[1] = 50; |
jsobiecki | 0:719ea21609f1 | 120 | } |
jsobiecki | 0:719ea21609f1 | 121 | } |
jsobiecki | 0:719ea21609f1 | 122 | } |
shut | 2:c507076bfd93 | 123 | void updateHist(int hist[i][j], int active[activeSize][activeSize],int x,int y){ |
shut | 2:c507076bfd93 | 124 | int aX=0; |
shut | 2:c507076bfd93 | 125 | for(int i=x-(activeSize/2);i<x+(activeSize/2+1);i++){ |
shut | 2:c507076bfd93 | 126 | int aY=0; |
shut | 2:c507076bfd93 | 127 | for(int j=y-(activeSize/2);j<y+(activeSize/2+1);j++){ |
shut | 2:c507076bfd93 | 128 | if(i>=0 && j>=0){ |
shut | 2:c507076bfd93 | 129 | hist[i][j]=active[aX][aY]; |
shut | 2:c507076bfd93 | 130 | aY++; |
shut | 2:c507076bfd93 | 131 | } |
shut | 2:c507076bfd93 | 132 | } |
shut | 2:c507076bfd93 | 133 | aX++; |
shut | 2:c507076bfd93 | 134 | } |
shut | 2:c507076bfd93 | 135 | } |