Comparison And Analysis Of Hierarchical Speed Regulation Of Multi-input Motor And Single Input Motor

Due to the advantages of large specific power,easy control,flexible layout and easy overload protection,hydraulic drives are widely used in engineering machinery,aerospace,and military equipment.In hydraulic transmission,the speed control circuit is an important basic circuit,which is mainly used to adjust the operating speed of the system's actuators.The multi-level output of the speed control system can better adapt to the load conditions.Faced with various complex working conditions,higher requirements are placed on the design of hydraulic circuits.The development of new hydraulic components has laid the foundation for the design of new hydraulic circuits.Based on the dual-stator hydraulic components developed by the dual-stator theory,the paper introduces the working principle of the differential connection of the multi-input motor,analyzes the effects of different action numbers on the number of differential connections of the multi-input motor and the internal and external of the multi-input motor.The influence of the motor displacement proportional coefficient on the number of motor differential connection combinations.Based on the dual-stator motor and the existing traditional speed-regulating circuit,this subject has designed a quantitative pump—variable single-acting dual-stator motor speed regulating circuit,a quantitative pump—quantitative single-acting double-stator motor speed regulating circuit and a quantitative pump—Quantitative double-acting double-stator motor speed control circuit.The structure and working principle of the three speed control loops are introduced and the static characteristics of the three speed control loops are analyzed.And compared with the traditional speed control circuit;at the same time,it analyzes the use of multi-input motor as a synchronous motor,which can solve the synchronization problem of the synchronous circuit of medium-diameter hydraulic cylinder and unequal-diameter hydraulic cylinder,which greatly expands the application range of quantitative motor.In AMESim,the dual stator element model is established,the new speed control loop is simulated and analyzed in the simulation software and the simulation result of the new speed control loop is compared with the theoretical calculation.Design the test circuit,build the test platform.Connect the test circuit in the laboratory,record the experimental data,organize and analyze the experimental data,and verify the feasibility of the new speed control circuit.