Force control system and control method

The invention belongs to the technical field of semiconductor packaging, and relates to a force control system and a control method.The force control system comprises a placement machine and an upper computer which are in communication connection, the placement machine is provided with a servo motor and a placement elastic body, and the placement elastic body is provided with an encoder electrically connected with the servo motor; the encoder is used for detecting the elastic deformation quantity of the surface-mounted elastomer, the rotating speed of the servo motor and the descending displacement of the output end of the servo motor and converting into electric signals; the servo motor is electrically connected with a force sensor, and the force sensor is electrically connected with a controller to form a closed-loop structure; the force sensor is used for receiving a welding force signal of the servo motor and transmitting the signal to the controller, and the controller is used for adjusting the output fo