Clutch Engagement Dynamics Model The position of the clutch in the vehicle driveline and the mechanical schematic, as shown. When the clutch is in the slip grinding stage, the established dynamic equation is as follows: Te-Tc=Jedωedt, Tc-Tf=Jvdωcdt (1) When the clutch stops grinding and enters the synchronization phase, the active and passive sides of the clutch can be considered as the same whole. At this time, there is ωe=ωc, and the clutch engagement model is: Te-Tf=(Je+Jv)dωcdt (2) where: Te engine output torque; Tc clutch transmission torque; Tf equivalent resistance torque; ωe crankshaft angular speed of the engine ;ωc clutch driven plate angular velocity; Je engine rotating part inertia; Jv equivalent to the transmission input shaft on the vehicle translation, moment of inertia. Impact rating The index for evaluating the stability of a vehicle's start is impact. The impact is very small and the start is too slow; while an excessive impact will affect the smoothness and comfort of the vehicle, so the impact must be moderate. The so-called impact is the rate of change of the longitudinal acceleration of the vehicle: j=dadt (3) where: j the degree of impact; a vehicle longitudinal acceleration. Clutch Engagement Process Analysis Engagement Process Analysis The joint process is analyzed by dividing the clutch stroke into four phases based on the change in transmission torque. When the car starts, the clutch engagement process OA is an idle stroke phase, which is used to eliminate the clearance between the release bearing and the clutch diaphragm spring; DE is the phase where the torque no longer grows; the CD is the master and the slave disc is in the synchronization phase; AC is the sliding wear In the stage, it is also the phase of torque transmission change. AC can be divided into two sections: AB and BC. Using the corresponding mathematical model to describe, the dynamic equations of the clutch under different working conditions can be obtained: (1) The idle stroke phase (OA): Tc=0; j=0; W=0 (5) (2) overcoming the static resistance Stage (AB): Jedωedt=Te-Tc; Tc燮Tf; ωc=0(6)j=0, W=t2t1 Btc(t)ωe(t)dt(3) Sliding Mill Stage (BC): Jedωedt= Te-Tc;Jvdωcdt=Tc-Tf (7) Let dTf/dt=0, then the impact: j=dadt=rηTig(n)ioJvdTcdt(8)W=t3t2 B T(t)[ωe(t)-ωc (t)]dt (9) (4) Master and slave disk synchronization phase (CD): The characteristics of the Tc range can strongly support the study of automatic clutch control strategies. (2) According to the relationship between the impact degree and the sliding work and the driver's intention to develop a control strategy, can better meet the starting requirements; the use of throttle size, throttle change rate, clutch engagement stroke, clutch between the master and follower The speed ratio and the clutch engagement speed as control parameters can better achieve this control strategy. Knee-Type Milling Machine,M Code for Milling Machine,8 Axis Milling Machine,9X42 Milling Machine WEISS MACHINERY CO., LTD. , https://www.weissmachinerys.com