Übersetzung für "Pulsmuster" in Englisch

The pulse patterns for driving the inverter are generated in the microprocessor drive unit.

The disadvantages of the method with precalculated pulse patterns are avoided in this method.

The harmonics are excited by the precalculated, optimized pulse patterns.

The pulse pattern may be a PWM pattern or a rectangular pattern depending on the mains frequency.

This evaluation model is now applied to the pulse pattern shown:

The pulse pattern is obtained automatically in the second inverter WR 2 .

This function is thus independent of the pulse pattern.

However, you can also program your own pulse patterns in an intuitive high-level language.

In these tests, complex pulse patterns are applied to individual or multiple electrodes in the array.

The interrupt is triggered only when a specific pulse pattern of the state signals that are input is present.

The pulse patterns are repeated with the encoder frequency whose period duration is referred to by 100%.

These standardized mean values uiFN, which are calculated in advance from the pulse pattern, are stored in a memory 28.

In a pulse-width-modulated converter with an intermediate voltage circuit, the converter voltage can be controlled by means of precalculated, optimized pulse patterns.

Smart PWM schemes or optimized pulse patterns enable improved harmonic performances and/or reduced converter losses.

To this end, a pulse pattern is generated with which the transistors of the inverter are switched.

An appropriate pulse pattern may provide for elimination of the current ripples having the lower pulse frequency in the motor.

This method according to the invention combines field-oriented control with voltage time-integral triggering equipment for off-line optimized pulse patterns.

Current-dependent voltage errors from the pulse converter 24 are also compensated for in the case of synchronous pulse patterns by means of the device 62 .

The audio processor analyses and codes sounds into a special pattern of electric pulses.

The control unit thereby generates the same pulse pattern at the beginning of each commutation. The torque ripple is thus considerably reduced. BRIEF DESCRIPTION OF THE DRAWINGS

Table 2 shows the individual times t1 -t4 for the pulse patterns, the physical current path and the driving voltage present at the down commutating leg S for the two cases of "counterclockwise rotation, current flow via legs R and S" and of "counterclockwise rotation, current flow via the legs R, S and T".

The beginning of the commutation starts with the pulse pattern "current buildup via the thyristors T1, T6, and T2, T5, respectively".

The control unit achieves the following pulse pattern by simple synchronization at the beginning of each communication independent of the direction of the current of the synchronous machine: "drive via the leg which is not participating in the commutation, and the leg to which the commutation takes place", "upper bypass" and "lower bypass", respectively.

For this purpose pulse patterns are selected which ensure optimal operation with nearly sinusoidal motor currents and minimum total losses, over the entire setting range of the frequency converter.

The disadvantage of this method is that a separate pulse pattern has to be calculated for each operating point (period duration and level).

This transition can take a long time, in some cases, since a change in pulse pattern is only permitted at certain times within a period.

At the same time, errors occur during the dynamic process, since the pulse pattern is not operated at its optimum point.

Due to this pulse pattern applied to the converter and the voltages thereby present at the legs of the synchronous machine (1/3 of the value of the intermediate link voltage at the leg commutating down and the electromotive force) the current change proceeds slowly and independently of the current direction of the synchronous machine, whereby the subordinate current controller has the opportunity to have an effect on the commutation.