王 亮 (Liang Wang)

Pos-doc Associate
Massachusetts Institute of Technology

CSAI Lab, Department of EECS
MIT, Cambridge MA 02139,
Office: 32-335
Phone: 617-324-8447
Email:
wangliang@csail.mit.edu

o

Biography: Liang Wang was an undergraduate at Beijing Jiaotong University, Beijing. His Ph.D. was also from Beijing Jiaotong University. Now, he is a Pos-doc associate at MIT, supervised by Prof. Berthold K. P. Horn.

Curriculum Vitae: Curriculum Vitae


o Divert & Alert:


     Alerting System

     Fig. 1: In the United States, every year, several police officers are injured or killed by roadside collisions. Machine vision may save their lives.


     Convex hull

     Fig. 2: Generate and update the convex hull automatically.


     Normal_Traffic_Region

     Fig. 3: Using the convex-hull technique, the Normal Traffic Region (NTR) can be detected “intelligently”.


oBilateral Control:


    Bilateral Control

     Fig. 4: Bilateral control eliminates traffic flow instability. See bilateral control.


    Bilateral Control

     Fig. 5: The simulation platform (See the Matlab code). When the black point drops below the blue dash, car colliion happens.


The simulation of multi-node bilateral condensed:

    Bilateral Control

     Fig. 6: Three node (1, -2, 1) bilateral control (First 40 seconds is controlled by car-following control) .


    Bilateral Control

     Fig. 7: BC-LSZ-7: 15-node bilateral control (First 40 seconds is controlled by car-following control).


o Chain Stability of BCM:


o Shock Wave and Traffic flow:


    traffic flow

     Traffic flow. The nonlinear wave equation is derived from the conservation law..


    car_following

     The traffic flow density is 1/(delta_x). This is the key to understand traffic problems.


o Useful Math Tools: