Abstract: A cross-coupling control method for moving beam of gantry machine tool is disclosed, which relates to the technical field of CNC machine tool control. The cross-coupling control method includes: Step 1: establishing a crossbeam dynamics model considering a ram on the crossbeam, and at the same time simplifying the model for an observer design; step 2: realizing a PID control parameter adjustment of motors at both ends in accordance with a method of parameter tuning of a unilateral servo control system; using a servo system with the same control parameters to jointly drive the crossbeam up and down, realizing the synchronous control and realizing PID control parameter tuning for both end motors. The disclosure not only reduces the synchronization error caused by the torsion of the crossbeam, but also solves the synchronization error caused by the asymmetric load on both sides, and improves the system robustness and stability.

Abstract: A buckle-connecting multifunctional decorative board, which can be applied on indoor ground, outdoor roof, or walls, comprises buckles provided at two sides thereof, and a tube-like chamber. The buckles simplify assembling of the decorative boards. The tube-like chamber receives a pipe or a cable. Therefore, a plurality of assembling operations can be finished at once to save construction time. The buckle-connecting multifunctional decorative board has functions of adjusting indoor temperature, receiving the pipe, melting snow on the roof, and heating water. The buckle-connecting multifunctional decorative board can be applied widely.

Abstract: A ground heating flooring with internal heat conduction structure includes a flooring body, a plurality of heat conduction mediums, a heating pipe, an upper locking member and a lower locking member. Each of the heat conduction mediums, provided within the flooring body, one end of which contacts with the heating pipe such that a heat within the heating pipe is conducted directly and distributed rapidly all around the flooring. The upper locking member, provided at a side of the flooring body, defines an upper protruding supporting cavity. The lower locking member, provided at an opposite side of the flooring body, defines a lower concaved supporting cavity. When an upper locking member of a flooring is engaged with a lower locking member of an adjacent flooring, the upper supporting cavity is fitted into the lower supporting cavity for forming an accommodating chamber to receive the heating pipe therein.