GRIPPING FORCE CONTROLLER AND DISMANTLING WORK MACHINE

摘要

PROBLEM TO BE SOLVED: To provide a gripping force controller capable of gripping by proper gripping force and to provide a dismantling work machine. SOLUTION: Pressure of supply pressure oil F rising by gripping an object is controlled to become equal to a pressure target value. To explain concretely, pressure of supply pressure oil F after a predetermined time plus overshoot of gripping force due to response time of a system is estimated by computation based on tendency of change of pressure P detected by a pressure sensor 92 to determine whether it exceeds the pressure target value or not. When it is determined that the estimated pressure of supply pressure oil F exceeds the pressure target value, a command value for a proportional electromagnetic pressure reducing valve 51 is set to zero to return a spool of a control valve 41 to a neutral position. COPYRIGHT: (C)2006,JPO&NCIPI