Excavator handle operating force collection and evaluation system and operating method

A test handle comprises a valve body and a valve element, the valve element is divided into two sections, the diameter of the upper section is larger than that of the lower section, a cavity in the valve body is divided into an upper cavity body and a lower cavity body, a through hole is formed between the upper cavity body and the lower cavity body, the upper cavity body is provided with an air pressure control port, and the air pressure control port is connected with an air supply system. A pressure sensor is arranged at the output end of the gas supply system; a micro-pressure sensor is arranged at the bottom of the lower cavity, a spring is arranged between the micro-pressure sensor and the lower section of the valve element, the input end of the controller is connected with the pressure sensor and the micro-pressure sensor, and the output end of the controller is connected with an air supply system. The manipulator is used as a research object, the pneumatic electromagnetic proportional system is used fo