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Method for calculating rated position of clutch execution device

A technology of rated position and actuator, applied in clutches, mechanical equipment, etc., can solve problems such as poor accuracy, and achieve the effect of enhanced dynamic performance and enhanced internal consistency

Active Publication Date: 2018-12-21
SCHAEFFLER TECH AG & CO KG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Since the hysteresis distance of the clutch is not constant over the entire torque range, a decreasing hysteresis distance corresponding to a lower setpoint torque can lead to an overshoot of the setpoint torque of the clutch actuator corresponding to the setpoint position
This results in less accurate torque in overlapping shifts of a dual clutch transmission when one clutch is disengaged and the second clutch is engaged

Method used

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  • Method for calculating rated position of clutch execution device
  • Method for calculating rated position of clutch execution device
  • Method for calculating rated position of clutch execution device

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Embodiment Construction

[0019] figure 1 An exemplary embodiment of the method according to the invention is shown in conjunction with a clutch characteristic curve, wherein a clutch torque Trq is shown as a function of the position Lact of a clutch actuator controlling the clutch. In this case, the setpoint position of the clutch actuator corresponding to the desired setpoint torque TrqReq1 is calculated directly, taking into account the clutch hysteresis. For this, a three-part moment model with three branches A, B, C is used. Characteristic curve A forms an inner hysteresis range depending on the current clutch position. It is supplemented by left lagging branch B and right lagging branch C. The left hysteresis branch B is the branch for the disengaged condition, which branch B is determined by an explicit calculation of the clutch characteristic curve including full hysteresis compensation. The right hysteresis branch C shows the branch of the engagement situation, which branch C is determined...

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Abstract

The invention relates to a method for calculating the rated position of a clutch execution device in clutch control. The rated torque (TrqReq1) corresponds to an operation stroke (LTgt) of the clutchexecution device for operating a clutch through a clutch characteristic curve (A), wherein the operation stroke (LTgt) corresponding to the rated torque (TrqReq1) is corrected through a correction factor (KF) related to a stroke lag of the clutch. In a method for enhancing the adjusted dynamic performance, the stroke lag of the clutch torque is considered when determining the rated position (LTgt)of the clutch execution device corresponding to the rated torque (TrqReq1).

Description

technical field [0001] The invention relates to a method for calculating a setpoint position of a clutch actuator in clutch control, wherein the setpoint torque corresponds to the actuation travel of the clutch actuator via a clutch characteristic curve, wherein the setpoint torque corresponds to the The operating stroke is corrected by a correction factor related to the stroke lag of the clutch. Background technique [0002] A method for controlling a friction clutch is known from DE 10 2011 011 152 A1, wherein the friction clutch is arranged between a heat engine and a transmission and the axially actuated clutch is driven along an actuating stroke by an operating element of the friction clutch Actuating device, the actuating stroke corresponds to the rated torque that can be transmitted through the friction clutch through the clutch characteristic curve. The lag that occurs along the actuation path between the setpoint torque and the actual torque actually transmitted by...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16D48/06
CPCF16D48/06F16D2500/3026F16D2500/3027F16D2500/50236F16D2500/50245F16D2500/70605F16D2500/50281
Inventor 亨里克·贝尔马提亚·克鲁格
Owner SCHAEFFLER TECH AG & CO KG