Abstract: The present disclosure provides a display panel, a method for preparing the same, and a display device. The display panel includes pixel units distributed in an array in a display area, where the pixel units include sub-pixels, at least one of which has a maximum grayscale value voltage different from a maximum grayscale value voltage of the other sub-pixel; and a switching circuit including switching units on a side of the display area, where one end of the switching unit is connected to a data line. In two adjacent columns of pixel units, two sub-pixels having the same maximum grayscale value voltage are connected to two adjacent switching units through data lines, respectively.

Abstract: The disclosure provides a method and system for trajectory tracking control of a vehicle-manipulator coupling system with finite time prescribed performance. Specifically, the trajectory tracking error of the vehicle-manipulator coupling system is obtained. A finite time performance function is designed to constrain the trajectory tracking error. In a case the constraint conditions corresponding to the finite time performance function are satisfied, the trajectory tracking error is converted to obtain a transformed error. The sliding mode surface is designed based on the transformed error to control the transformed error to converge in a finite time, and the external disturbance of the vehicle-manipulator coupling system is observed based on non-linear disturbance observer. The control input of the vehicle-manipulator coupling system is designed based on the sliding mode surface and the non-linear disturbance observer output.

Abstract: An electrical connector (100) comprises a terminal block (1) and a plurality of terminals (2). The terminal block (1) comprises an inner wall (11), an outer wall (12) opposite to the inner wall (11) and a plurality of receiving slots (10) defined between the inner wall (11) and the outer wall (12) for receiving terminals (2). A plurality of terminals (2) are assembled to the receiving slots (10) of the terminal block (1) and each terminal (2) has a contacting portion (21), a soldering portion (23) and a base portion (22) connecting with the contacting portion (21) and the soldering portion (23). Wherein each receiving slot (10) further defines a projecting board (101) extending from the inner wall (11), a supporting portion (103) forming on the top of the outer wall (12) and a channel (102) defined between the projecting board (101) and the supporting portion (103), the projecting board (101) and the supporting portion (103) respectively supports two sides of the base portion (22) of the terminal (2).