Damping force controllable viscous damper and intelligent monitoring and control system of damping force controllable viscous damper

The invention discloses a damping force controllable viscous damper and an intelligent monitoring and control system of the damping force controllable viscous damper. The damper comprises a cylinder body, a piston and a piston rod, wherein the interior of the cylinder body is divided into a main cylinder and an auxiliary cylinder; the main cylinder is filled with a damping medium formed by polyethylene glycol and nanoscale silica particles; the silica particles are suspended and dispersed in polyethylene glycol in a fluid state; the piston is arranged in the main cylinder and can move back and forth in the axial direction of the main cylinder so as to drive the piston rod connected with the piston to move together; one end of the piston rod penetrates through a damping hole formed in the piston; and the other end of the piston rod extends into the auxiliary cylinder. The invention further discloses the corresponding intelligent monitoring and control system. With the adoption of the damper and the system, the damping force of the damper can be effectively controlled, and the operating state of the damper can be detected, fed back and adjusted in real time, so that the safety of an engineering structure is better protected.