SU960738A1

SU960738A1 - Positioning device

Info

Publication number: SU960738A1
Application number: SU813265666A
Authority: SU
Inventors: Олег Вячеславович Смоленский; Николай Дмитриевич Нестеров
Original assignee: Тульский Ордена Трудового Красного Знамени Политехнический Институт; Предприятие П/Я А-3757
Priority date: 1981-03-27
Filing date: 1981-03-27
Publication date: 1982-09-23

Description

Изобретение относитс к автоматическому управлению и предназначено дл использовани в системах числового программного управлени .This invention relates to automatic control and is intended for use in numerical control systems.

Известно устройство дл позиционировани , содержащее формирователь сигналов отработки, выходы которого через элемент ИЛИ подключены к счетчику импульсов отработки, а один выход через элемент ИЛИ св зан с выходом счетчика импульсов отработки , второй выход которого через схему сравнени и третий элемент ИЛИ подключен к другому входу формировател сигналов отработки fi.A positioning device is known that contains a test signal driver, the outputs of which through the OR element are connected to a pulse counter of testing, and one output through the OR element is connected to the output of a pulse counter of the testing, the second output of which is connected to another input of the driver signaling fi.

Недостатком этого устройства вл етс его сложность и малое быстродействие.A disadvantage of this device is its complexity and low speed.

Наиболее близким по технической сущности к предлагаемому вл етс устройство дл позиционировани , содержащее формироват.ель сигналов отработки, выходы которого через элемент ИЛИ подключены к счетчику импульсов отработки, а один вход через второй элемент ИЛИ св зан с выходом счетчика импульсов отработки , второй выход которого через схему сравнени и третий элемент ИЛИ подключен к другому входуThe closest in technical essence to the present invention is a positioning device comprising a shaping signal of testing, the outputs of which through the OR element are connected to the pulse counter of testing, and one input through the second element OR is connected to the output of the pulse counter of testing, the second output of which the comparison circuit and the third element OR is connected to another input

формировател сигналов отработки, блок определени путем торможени , один вход которого соединен с соответствующим выходом формировател сигналов отработки, другой - со входом третьего элемента ИЛИ, один выход подключен к схеме сравнени , а другой - ко входу второго элемента ИЛИ 2 .a signal conditioning driver, a deceleration unit by braking, one input of which is connected to the corresponding output of the processing signal generator, another - to the input of the third OR element, one output connected to the comparison circuit, and the other to the input of the second OR element 2.

10ten

Недостатком устройства вл етс низка точность.The disadvantage of the device is low accuracy.

Цель Изобретени - повышение точности устройства.The purpose of the invention is to improve the accuracy of the device.

Поставленна цель достигаетс The goal is achieved

15 тем, что в устройство дл позиционировани , содержащее суммдтор, вход которого вл етс первым входом устройства , выход соединен с первым входом первого элемента сравнени , 15 in that in a positioning device, comprising a sumdtor, the input of which is the first input of the device, the output is connected to the first input of the first reference element,

20 второй вход которого соединен с выходом устройства и с выходом счетчика , введены второй элемент сравнени , задатчик скорости, первый и второй триггеры и элемент И, второй 20 whose second input is connected to the output of the device and to the output of the counter, the second comparison element, the speed master, the first and second triggers and the AND element are entered, the second

25 вход устройства и выход задатчика скорости подключены к соответствую - щим входам второго элемента сравнени , выходы первого и второго элементов сравнени соответственно 25 the device input and the output of the speed limiter are connected to the corresponding inputs of the second comparison element, the outputs of the first and second comparison elements, respectively.

Claims

30 are connected to the installation inputs to the unit of the first and second triggers, the installation inputs to zero of which are connected to the Reset device input, which inverts the output of the first and the direct output of the second trigger, are connected to the corresponding inputs of the I element, the output of which is connected to the control input of the counter, The reversing and counting inputs of which are connected to the direct output of the first trigger and to the first input of the device, respectively. The drawing shows the functional scheme of the device. The device comprises an adder 1, "counter 2, first comparison element 3, first and second triggers 4 and 5, element 6, second comparison element 7, speed and displacement sensors 8 and 9, speed setpoint 10. The device works as follows. The adder 1 records the number N corresponding to the magnitude of the drive movement along one of the coordinates, and triggers 4 and 5 are set to the initial state O, after which the Start command is sent to the drive from the control system. The movement of the drive detects the signal on sensor 8 and the formation of pulses in sensor 9, which are fed to the counting inputs of adder 1 and counter 2, while adder 1 is in read mode and counter 2 is in read mode. the addition of the pulses of the sensor 9. The increase in the number of pulses in the counter 2 is fed to the actuator for testing and increases in proportion to its speed. The device's normal status corresponds to the drive acceleration mode. The current value of the speed of the drive is measured by the sensor 8 and simultaneously with the signal of the setting device 10 is fed to the inputs of the element 7. If the signals at the inputs are equal, the element 7 generates a signal that goes to the single input of the Bis trigger of its direct output, to the first input of the And 6 element The second input of which receives a single signal from the inverse output of the trigger 4. With the Ib element running, counter 2 receives a signal that prohibits the counting of pulses from the sensor 9, which causes the drive speed to be fixed at a predetermined level set by Setpoint 10. This ends the drive racking mode. During the drive movement, the value of N in the slider 1 decreases, which leads to a corresponding change in the output signal C code of element 3 arriving at the first input, the second input of which contains a fixed signal (code) from counter 2. When these signals are equal, element 3 forms the output signal that goes to the single input of the trigger 4, which triggers the trigger 4, the signal from the direct output of which goes to the reverse input of the counter 2, and from the inverse output of the trigger 4 to the second input of the Ib element, to the first ohm input of which there is a single signal with the direct output of the trigger 5. Zero signal Ib output from the element arrives at. control input of counter 2 and enables the counting of pulses for subtraction. The described device state corresponds to the drive braking mode. The present invention allows to increase the accuracy of the System by implementing a more modern control algorithm. Claim device A positioning device comprising an adder whose input is the first input of the device, the output is connected to the first input of the first reference element, the second input of which is connected to the output of the device and to the output of the counter, so as to improve the accuracy device, it contains the second element of comparison, the speed master, the first and second triggers and the element And the second input of the device and the output of the speed master are connected to the corresponding inputs of the second element of the comparison, the outputs are not first and second triggers, the zero inputs of which are connected to the Device Reset input, which inverts the output of the first and direct output of the second flip-flops are connected to the corresponding inputs of the And element, the output of which is connected to the control input counter, reversive and counting inputs of which are connected to the output of the first trigger and the first input of the device, respectively. . Sources of information taken into account during the examination 1. USSR author's certificate 489082, cl. G 05 B 19/18, 1976.

2. Authors certificate of the USSR 488190, cl. G 05 B 19/18, 1976 (prototype) .: