Electricity: motive power systems – Open-loop stepping motor control systems
Patent
1977-05-04
1978-10-24
Hohauser, Herman J.
Electricity: motive power systems
Open-loop stepping motor control systems
G05B 1940
Patent
active
041223802
ABSTRACT:
The step motor control system comprises triggers and a trigger starting and switching sequence preselection unit.The unit inputs are connected to a second output of each trigger, and the outputs are connected to the inputs of each trigger. The system also includes a decoder of inoperative states of the triggers and power amplifiers. The unit comprises a trigger starting circuit for setting up the amount of rotation of the step motor shaft comprising an individual bus connected to timing inputs of the triggers and means for trigger switching sequence preselection for setting up the rotational direction of the shaft. Said means has a first group of NAND gates, the number of gates being equal to the number of triggers, each gate having its first input connected to the second output of one of the triggers, and its second input connected to the bus for setting up the shaft's rotational direction. Each grate's output is directly connected to a first data input and, via individual NAND gates, to a second data input of one of the remaining triggers, the first group enabling a direct sequence of switching the motor windings. Said means also has a second group of NAND gates, the number of gates being equal to the number of triggers, each gate having a first input connected to the second output of one of the triggers, a second input connected, via an individual NAND gate, to the bus for setting up the shaft's rotational direction, and an output connected directly to the first data input and, via the individual NAND gates effecting the connection of the outputs of each NAND gate of the first group to the second data input of one of the remaining triggers, to the second data input of one of the remaining triggers, the second group enabling a reversed sequence of switching the motor windings.
REFERENCES:
patent: 3842332 (1974-10-01), Heine et al.
patent: 3991355 (1976-11-01), Reehil et al.
patent: 4028600 (1977-06-01), Blaschke et al.
Lobanov Vyacheslav Mikhailovich
Roitman Dmitry Leonidovich
Rozgon Vladimir Danilovich
Zhukovsky Evgeny Grigorievich
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