A METHOD FOR ACCURATE AND EFFICIENT CONTROL OF AUTOMATED GUIDED VEHICLES FOR LOAD TRANSPORTATION TASKS

    公开(公告)号:WO2021121537A1

    公开(公告)日:2021-06-24

    申请号:PCT/EP2019/085210

    申请日:2019-12-15

    Abstract: A control method for automated guided vehicles (AGV) is disclosed. It consists of the following steps: adaptive sampling of the path given as the parametric curve C(u); computing the velocity limits at critical velocity profile points; planning optimal steering angle and traction velocity profiles for the wheels; adaptation of sample time Ts and prediction horizon lengths N for model predictive control; projecting the current vehicle pose onto its closest point along the desired path; computation of the linearized models for prediction horizon, cast to quadratic program (QP); solving QP to obtain velocity and steering angle setpoint offsets; then velocity and steering angle setpoint offsets are superimposed on the nominal trajectory values, driving the tracking errors to zero; a new control cycle begins by updating the vehicle state measurements from onboard AGV set of sensors taking into account whether path is appended or not and safety changes if any.

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