Study on Coaxial Parallel HEV Automatic Clutch Torque Estimation

2015 ◽  
pp. 537-544
Author(s):  
Meng Yang ◽  
Xuebin Wu ◽  
Xin Zhang ◽  
Hongwei Chen
Keyword(s):  
Torque Estimation ◽  
Clutch Torque

Estimation of Clutch Parameters for Online Diagnostics and Control Applications

2005 ◽  
Author(s):  
S. Joshi ◽  
J. Liu ◽  
S. Ananthakrishnan
Keyword(s):  
Differential Algebraic Equations ◽  
Algebraic Equations ◽  
Torque Estimation ◽  
Clutch Engagement ◽  
Online Implementation ◽  
Engagement Angle ◽  
Shaft Angle ◽  
Clutch Control ◽  
And Control ◽  
Clutch Torque

The primary goal of this research was to identify the role of non-linear parameter estimation in clutch torque estimation for automotive applications. The benefit of this approach in estimating parameters of a system defined by a set of differential algebraic equations (DAEs) that represents, say, clutch torque profile is investigated. In addition, online implementation, albeit at a slow rate compared to control loop rates is demonstrated. This method of analytical DAE based estimation has significant advantages over purely empirical methods in that it directly identifies the relationships between system problem variables, such as, engine speed, cross shaft angle to variable of interest, say, clutch torque, unlike, indirect approaches [1]. In addition, in contrast with time series evolution of discrete system models based on ARMAX models, this approach allows a designer to know the relationship between system parameters such as friction coefficient, clutch engagement angle, etc and the estimation process leading to better design of clutch control algorithms. However, unlike, the direct digital control methods, DAE based approaches are computationally more intensive resulting in a need for additional onboard processing. One of the goals of this initial research is to study this to identify practical analytical and numerical approaches that will lead to onboard implementation of these algorithms for truck applications, specifically in automated mechanical transmissions (AMTs) [2, 3].

Torque Phase Shift Control Based on Clutch Torque Estimation

2013 ◽  
Author(s):  
Diana Yanakiev ◽  
Yuji Fujii ◽  
Eric Tseng ◽  
Gregory M. Pietron ◽  
Joseph Kucharski ◽  
...  
Keyword(s):  
Closed Loop ◽  
Automatic Transmission ◽  
Time Estimation ◽  
Transfer Phase ◽  
Shift Method ◽  
Shift Control ◽  
Input And Output ◽  
Torque Estimation ◽  
Real Time Estimation ◽  
Clutch Torque

An automatic transmission shift method is presented, in which the torque transfer phase is controlled in closed loop. This is made possible by real-time estimation of the torque transmitted by the off-going and on-coming clutches participating in the shift. Each clutch torque is determined based on measured or estimated input and output shaft torques and accelerations. To illustrate an application of the method, traditional friction elements are used to emulate one-way-clutch function during a power-on upshift.

scholarly journals Transmitted torque observer applied to real time engine and clutch torque estimation

2015 ◽  
Vol 48 (26) ◽  
pp. 73-78 ◽  
Author(s):  
Rémi Losero ◽  
Jimmy Lauber ◽  
Thierry-Marie Guerra
Keyword(s):  
Real Time ◽  
Torque Estimation ◽  
Torque Observer ◽  
Clutch Torque

Torque Ripple Control Based on Instantaneous Torque Estimation in PMSMs

2011 ◽  
Vol 131 (9) ◽  
pp. 1120-1127 ◽  
Author(s):  
Noriya Nakao ◽  
Kan Akatsu
Keyword(s):  
Torque Ripple ◽  
Torque Estimation ◽  
Ripple Control
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