| 摘要 |
<p>A method for preventing slip or skid between driving wheels and ground or support in vehicle drive systems, particularly of multiple axle type, with hydrostatic power transmission, which comprises at least one hydraulic pump driven by a drive power source such as an internal combustion engine having a speed (N) and at least one hydraulic motor. The hydrostatic power transmission has a hydraulic pressure, which is controlled by a control system for changing the driving momentum of the hydraulic motor. The method is characterized by the steps of continuously calculating the speed of the wheels of each wheel axle on the basis of instantaneous values of required control parameters of the hydrostatic power transmission such as motor speed (N rev/min), pump displacement (.alpha.p), motor displacement (.alpha.m) and/or the hydraulic pressure (P) in the power transmission, comparing the calculated speed with the speed of one non-driven or idling wheel axle of the vehicle and providing when finding a speed differential exceeding a predetermined minimum limit value and of longer duration than a predetermined minimum time, an output signal to the control system for reducing the hydraulic pressure (P) in said power transmission for a predetermined period of time.</p> |
