公开(公告)号：US20240360721A1

公开(公告)日：2024-10-31

申请号：US18291892

申请日：2022-08-16

申请人： Ryse Inc.

发明人： Trung PHAM ,  Nabeel AHMED

IPC分类号： E06B9/322 ,  E06B9/68 ,  G05B19/042

CPC分类号： E06B9/322 ,  G05B19/042 ,  E06B2009/6845 ,  E06B2009/6863

摘要： A drive system for raising and lowering a window covering using a continuous cord loop that includes a motor with an associated encoder, device controller for the motor, a speed sensor, and proportional-integral-derivative (PID) layer. The device controller stores or receives a desired motor speed and generates a speed command signal to the motor. A closed-loop system applies a PID speed control algorithm to an error representing a difference between actual motor speed and desired motor speed. The PID layer uses the error to calculate a new output via PID control terms to automatically correct signals to the motor to achieve desired motor speed. A hembar alignment function automates positional control of a plurality of motor drive systems to synchronize raising or lowering of window covering shades with the shades in positional alignment. A system controller includes a time-counter indexed to a position scale to synchronize hembar alignment positional commands.