Abstract: The invention relates to a device for controlling the position for work devices (41) of mobile machines (40). The inventive device comprises a measuring device (1,2) for measuring an angle (?) which is formed between a level (42) that is determined by the position of the work device (41) and the direction of the gravitational force (g). The inventive device also comprises an angle transmitter (5) for predetermining an angle (??) which is formed between a level (42) that is determined by the position of the work device (41) and the direction of the gravitational force (g). The inventive device further comprises a controller (3, 4, 6–16) for controlling the angle (?) between the level (42) of the work device (41) and the direction of the gravitational force (g) in such a way that the measured angle (?) matches the predetermined angle (??).

Abstract: The invention relates to a maintenance system for a control device (1) of hydrostatic drives. Said system comprises a control unit (16) and a first interface (12a) that is connected to the control device (1) via a data line (6a), for the bi-directional transfer of data and a maintenance device (3) comprising a second interface (12b) that is connected to the maintenance device (3) via a data line (6b), for the bi-directional transfer of data. The first and the second interface (12a, 12b) have a respective transceiver (4a, 4b) and an antenna (5a, 5b) and data is transferred between the control device (1) and the maintenance device (3) in a wireless manner by radio.

Abstract: The invention relates to a device for controlling the position for work devices (41) of mobile machines (40). The inventive device comprises a measuring device (1,2) for measuring an angle (&agr;) which is formed between a level (42) that is determined by the position of the work device (41) and the direction of the gravitational force (g). The inventive device also comprises an angle transmitter (5) for predetermining an angle (&agr;′) which is formed between a level (42) that is determined by the position of the work device (41) and the direction of the gravitational force (g). The inventive device further comprises a controller (3, 4, 6-16) for controlling the angle (&agr;) between the level (42) of the work device (41) and the direction of the gravitational force (g) in such a way that the measured angle (&agr;) matches the predetermined angle (&agr;′).

Abstract: A control and regulation device for a vehicle travel drive, which comprises two hydrostatic transmissions (3, 4) of adjustable transmission ratios, each comprising a hydraulic pump (12, 13) and a hydraulic motor (14, 15), which are in driving connection with two vehicle track arrangements (18, 19) and have each an adjustment device (30, 24; 31, 25) controllable with control signals (v.sub.l, v.sub.r) for adjusting the transmission ratio, with a control section comprising a desired-value setting apparatus (5) and a signal processing means (42, 43), whereby the desired-value setting means sets transmission ratio desired-values of each hydrostatic transmission, employing respective adjustable control levers (36, 37), and outputs desired-value signals (s.sub.l, s.sub.r), and the signal processing apparatus processes desired-value signals to control signals (s.sub.l, s.sub.r) and outputs the latter.