Velocity measurement
consequence there are mostly very large disturbance elements in the velocity signal. Differentiation with digital measuring systems On incrementally operating measuring systems the number of the pulses added [...] method of determining the velocity is largely immune to interference and is often used these days in with digital signal processing . DC generator To measure angular velocities, essentially DC generators [...] speed over a wide tacho rotation speed range. A disadvantage for these generators is the collector with brushes necessary for commutation; collectors require regular maintenance. The voltage tapped on the
Circulation losses in hydraulic systems
route possible with the smallest possible pressure loss. Either the centre position of a directional valve ( Figure U 15 a ) or a separate idle circulation valve is used for this ( b ), with the full flow
Temperature measurements in hydraulics
temperature of the hydraulic fluid in hydraulic systems can be measured either with simple measurement devices (thermometer) or with a measuring device that issues signals to the control unit. The simplest method
Hydraulic motor
torque M 2 is determined by the load pressure p L and the displacement V 2: In general, all pumps (with the exception of valve-controlled pumps) can now also be used as high-speed hydraulic motors. In addition [...] on the friction The uniformity of the movement, which is influenced heavily by a fluctuating torque with an uneven number of pistons.
Natural frequency of a hydraulic cylinder
As a synchronizing cylinder (Figure K 5) with oil spring stiffness. The oil spring stiffness for cylinder side A and cylinder side B are arranged in parallel and add up to the total oil spring stiffness [...] cylinder (Figure K 6) : For both cylinders, the natural angular frequency is calculated in each case from With a hydraulic motor [hydrostatic motor] (Figure K 7) , the weight m is replaced by the mass moment of
Dual variable pump
Multi-circuit pump normally with an inclined axis design, but also a design according to the swash plate principle, in which two drives are included in one housing. In the case of an inclined axis design [...] design, either the toothed drive shaft with one pump as a drive for a second pump ( Figure V 20 ) — in this case both are adjusted using a sum power controller — or a transfer case is used for both pumps
Program
n is made between a machine program and a part(s) program whereby the latter is a program created with a view to manufacturing a specific part. An RTDP electronic data processing system : Logical and complete [...] complete sequence of instructions (work specifications) intended to provide a solution for a task with the help of a computer . The program is stored in the system's main memory. It provides the data to
Pressure measuring procedures
electrical measuring procedures are available for conducting the measurement. In hydraulics : In keeping with its significance in hydrostatics as one of the most important parameters, pressure is also one of [...] operation. For this purpose, mechanical measuring procedures ( Pressure gauge ) as well as methods with an electrical output are used in which resistance measurement using strain gauges and the piezoresistive
Word processor
Processor with a parallel structure to process words.
Fixed throttle
Throttle with a constant cross section. Opposite: variable throttle .