Joint pressure control method of friction clutch
A technology of friction clutch and joint pressure, which is applied in electric fluid pressure control, clutches, instruments, etc., can solve the problems of inaccurate joint pressure control, reduce impact torque and joint time, optimize design, and improve stability Effect
Pending Publication Date: 2022-03-01
CENT SOUTH UNIV
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Problems solved by technology
Among them, the maximum speed of the clutch is 2000rpm, and it is not suitable for complex nonlinear factors at high speeds, and the control of the engagement pressure is inaccurate
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[0052] Such as figure 1 It is a schematic flow chart of the method of the present invention: the engagement pressure control method of the friction clutch provided by the present invention comprises the following steps:
[0053] S1. Establish a dynamic model of the high speed difference friction clutch and generate an initial data set;
[0054] S2. According to the dynamic characteristics of the clutch engagement process, a variable-slope engagement pressure equation is established;
[0055] S3. Selecting initial parameters, adopting multi-factor analysis to obtain eigenvalues, and selecting impact torque and engagement time of different parameters from the initial data set in the variable-slope joint pressure control method to generate a training data set;
[0056] S4. Perform regression training on the training data set to obtain a prediction model;
[0057] S5. Using the predictive model to solve the initial parameters of the friction clutch to be controlled until the fin...
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The invention discloses a joint pressure control method of a friction clutch, which comprises the following steps: establishing a kinetic model of a high-speed-difference friction clutch, and generating an initial data set; establishing a variable slope type joint pressure equation; initial parameters are selected, characteristic values are obtained through multi-factor analysis, the impact torque and the joint time of the variable slope type joint pressure control method are selected from the initial data set, and a training data set is generated; performing regression training on the training data set to obtain a prediction model; and solving the initial parameters of the friction clutch to be controlled by adopting the prediction model until a final optimization target is obtained, and controlling the joint pressure of the friction clutch. According to the method, optimization design is carried out on design parameters of the variable slope type pressure. The problems of large friction coefficient change, large impact fluctuation, complex nonlinear characteristics and the like in the engagement process are considered, the impact torque and the engagement time in the clutch engagement process can be reduced at the same time, accuracy and reliability are achieved, and the stability in the clutch engagement process is improved.
Description
technical field [0001] The invention belongs to the field of clutch control, and in particular relates to a method for controlling the engagement pressure of a friction clutch. Background technique [0002] The friction clutch has a large transferable torque and a simple structure. It is a key component of the aircraft power system. The dynamic characteristics of the friction clutch during the engagement process directly affect the flexibility, stability and safety of the aircraft. In the case of high-speed differential engagement, the friction clutch engagement process has large rotational speed changes, large engagement impact, and complex nonlinear factors, and the impact torque is inversely proportional to the engagement time under constant-rate pressing force loading, that is, reducing the engagement time, the impact torque will increase, and vice versa. It is particularly important to realize the smooth and fast engagement of the friction clutch in the high speed diff...
Claims
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IPC IPC(8): G05D16/20F16D48/06
CPCG05D16/20F16D48/066G06F30/27G06F17/18G06N3/126G06F2119/14
Inventor 陈志施宗材朱楚严宏志张迎东李治作王文龙
Owner CENT SOUTH UNIV