Amplitude limiting device and method

• Main Authors: ZHAO XIAOGUANG, TAN MIN, LIANG ZIZE, JIA PENGXIAO, LI EN
• Format: Patent
• Language: Chinese; English
• Published: 08.08.2012
• Subjects: CRANES; HAULING; HOISTING; HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDEDFOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCEDIRECTLY TO THE SURFACE OF A LOAD; LIFTING; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS,WINCHES, OR TACKLES; PERFORMING OPERATIONS; TRANSPORTING

The invention discloses an amplitude limiting device and an amplitude limiting method. The amplitude limiting device is used for calculating and limiting the operating amplitude of a telescopic arm of a telescopic arm frame type construction machinery vehicle, and comprises an ARM (Advanced RISC Machine) controller module, a tilting angle sensor module, a length measurement sensor module and a rotary coder module, which are connected through a CAN (Controller Area Network) bus. The amplitude limiting method comprises the following steps: obtaining the pitching angle of the telescopic arm, the rotary position angle of the telescopic arm and the arm length of the telescopic arm; according to the structural form, the pitching angle and the arm length of the telescopic arm, calculating the operating amplitude of the telescopic arm; according to the rotary position angle, looking up a corresponding amplitude limiting critical value in a pre-stored amplitude limiting critical value corresponding table; and accordin