Methods for controlling thickness wedge in glass ribbon

A method for controlling wedge variation in a glass ribbon includes flowing molten glass over converging sides of a forming vessel, drawing a glass ribbon from a root of the forming vessel, measuring the wedge variation over at least a portion of the width of the glass ribbon, adjusting a tilt of the forming vessel and a temperature near a weir of the forming vessel based on the measured wedge variation to decrease the wedge variation over the width of the glass ribbon, and re-measuring the wedge variation over the portion of the width of the glass ribbon. 种用于控制玻璃带中的楔形变化的方法，所述方法包括使熔融玻璃流过成形容器的会聚侧面，从成形容器的根部拉制玻璃带，测量玻璃带的至少部分宽度上的楔形变化，基于所测得的楔形变化对成形容器的倾斜以及成形容器的堰附近的温度进行调节，以减少玻璃带的该宽度上的楔形变化，以及对玻璃带的该部分宽度上的楔形变化进行重新测量。