DRIVING CONTROLLER FOR CONSTRUCTION MACHINERY

摘要

PROBLEM TO BE SOLVED: To provide a driving controller for construction machinery capable of preventing occurrence of vibration and shock when a driven body stops. SOLUTION: An electric motor 25 is used based on the characteristics of the electric motor at turning accerelation and acceleration time and is used based on the characteristics of a power generator at turning accerelation and deceleration time. A control device 55 control the electric motor by different torque characteristics depending on the turning acceleration time and the turning deceleration time. The control device 55 reduces speed by using the maximum value of absorption torque of the electric motor as a fixed value when using the electric motor 25 based on the characteristics of the power generator and reduces the maximum value of absorption torque in accordance with rotational speed when turn order input is below the fixed value and rotational speed of the electric motor is low rotational speed below the fixed value. COPYRIGHT: (C)2007,JPO&INPIT