Patent ID: 8690474
Filing Date: 2014-04-08
Classification: E01C

Abstract:
1. A method of controlling at least one position characteristic of a milling drum of a road construction machine, the at least one position characteristic being from the group consisting of the milling depth of the drum and the slope of the drum, the method comprising: (a) setting a set value for an operational parameter of at least one sensor, the operational parameter corresponding to at least one of the milling depth of the drum and the slope of the drum; (b) conducting a milling operation; (c) during the milling operation, sensing a current actual value of the operational parameter of the at least one sensor; (d) generating an adjustment value with a controller, the adjustment value correlating to a difference between the set value and the current actual value of the operational parameter of the at least one sensor; (e) controlling the at least one position characteristic based on the adjustment value; (f) without interrupting the milling operation, switching over the control of the at least one position characteristic from control based at least in part on the at least one sensor to control based at least in part on a replacement sensor not included in the at least one sensor, and (g) changing at least one of a set value of an operational parameter of the replacement sensor and a current measured actual value of the operational parameter of the replacement sensor such that the adjustment value is unchanged at the time of switching over.