| 摘要 |
<p>PROBLEM TO BE SOLVED: To improve control accuracy of engaging torque by correcting an effect of an air gap of electromagnetic clutches on a real time basis. SOLUTION: An air gap estimating means M6 estimates the air gap G on the basis of an actual magnetic flux densityϕs and an actual exciting current Is detected during control of the electromagnetic clutches CL and CR, and a target exciting current It calculated by a target exciting current calculating means M3 is corrected by using the air gap G. An actual engaging torque calculating means M7 calculates actual engaging torque Tsn on the basis of the air gap G and the actual magnetic flux densityϕs, and target engaging torque Ts outputted by a target engaging torque calculating means M1 is corrected by the actual engaging torque Tsn. By this, an aging effect of the air gap G of the electromagnetic clutches CL and CR is compensated on a real time basis and the control accuracy can be improved.</p> |
