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HYDRAULIC SERVO CONTROL SYSTEM FOR CONSTANT ANGULAR VELOCITY MOTION OF TUBE BENDING ARM AND HYDRAULIC SERVO CONTROL METHOD FOR CONSTANT ANGULAR VELOCITY MOTION OF TUBE BENDING ARM
HYDRAULIC SERVO CONTROL SYSTEM FOR CONSTANT ANGULAR VELOCITY MOTION OF TUBE BENDING ARM AND HYDRAULIC SERVO CONTROL METHOD FOR CONSTANT ANGULAR VELOCITY MOTION OF TUBE BENDING ARM
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机译：管弯曲臂恒定角速度运动的液压伺服控制系统及管弯曲臂恒定角速度运动的液压伺服控制方法
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摘要
PURPOSE: A hydraulic servo control system for constant angular velocity motion of tube bending arm and a hydraulic servo control method for constant angular velocity motion of tube bending arm are provided to drive the bending arm to a constant angular velocity. CONSTITUTION: The hydraulic servo control system for constant angular velocity motion of tube bending arm comprises a bending arm(20) for holding and rotating a tube(10); a cylinder(40) contracted and expanded to rotate the bending arm to a certain angle; a servo valve(50) for supplying hydraulic pressure to the cylinder and controlling driving of the cylinder by regulating the hydraulic pressure; a controller for rotating the bending arm to a constant angular velocity by calculating speed curve of the cylinder according to rotation angle of the bending arm, thereby controlling the servo valve; and a hydraulic pump(61) for supplying hydraulic pressure to the servo valve, wherein the hydraulic servo control system further comprises link bodies(30) interposed between the bending arm and the cylinder to rotate the bending arm, wherein the servo valve is a 4 port 3 position valve, wherein the servo valve has first position (P1), second position (P2) and third position (P3), wherein the servo valve is equipped with a servo drive for controlling the servo valve by the speed curve of the cylinder calculated in the controller.
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