The invention provides a linkage type horizontal planar motion mechanism, which comprises bearer frames 2 and 19, a installation rack 9, a front back
servo electric cylinder 8, a rear
servo electric cylinder18, a rotating joint 17, a connecting rod 16, a beam 3, a pushing rod 11 and a
force balance 7, wherein a tank test trailer 1 is connected with the support frames 2 and 19; the installation rack 9 is used for fixing the front and rear
servo electric cylinders 8 and 18; the beam 3 is moveably connected with the pushing rod 11 and a connecting rod 16 through the rotating joint 17; an installation hole 12 on the beam 3 is fixed with front and rear connecting rods 4; and the
force balance 7 is connected with a ship model 6 and an adjusting rod 5. The formed linkage type horizontal planar motion mechanism can realize the swaying or yawing oscillation of the ship model through the stretching of the pushing rods of two servo electric cylinders and a sample feedback and
control system of a
position sensor in each servo electric cylinder; and the
control system is driven by the servo electric cylinder, an in-built
encoder samples and feeds back, and a
programmable logic controller (PLC) is used for controlling, thus the invention has convenient controlling, rapid speed, high measurement accuracy, simple structure, convenient maintaining and long service life.