阅读说明：本技术 一种基于可控硅模块的仿真转台制动系统 (Simulation revolving stage braking system based on silicon controlled rectifier module ) 是由 梅许文 江海滨 张旭明 罗小兵 于 2021-07-30 设计创作，主要内容包括：一种基于可控硅模块的仿真转台制动系统,包括RTX控制系统、交流伺服驱动器、可控硅模块及交流无刷电机,所述RTX控制系统分别与交流伺服驱动器、PCI1723板卡、可控硅模块连接,所述PCI1723板卡与交流伺服驱动器连接,所述交流伺服驱动器与交流无刷电机连接,所述可控硅模块通过功率电阻与交流无刷电机连接。本发明在仿真转台正常工作时,由RTX控制系统根据角度反馈组成的闭环系统,实时计算并通过PCI1723板卡输出模拟量DA值给交流伺服驱动器,交流伺服驱动器在电流环模式下驱动交流无刷电机运行；在转台出现异常报警时,一方面RTX控制系统切断交流伺服驱动器的使能信号及DA信号,另一方面给出信号控制可控硅模块,实现交流无刷电机的安全制动。(The utility model provides a emulation revolving stage braking system based on silicon controlled rectifier module, includes RTX control system, exchanges servo driver, silicon controlled rectifier module and exchanges brushless motor, RTX control system is connected with exchanging servo driver, PCI1723 integrated circuit board, silicon controlled rectifier module respectively, PCI1723 integrated circuit board is connected with exchanging servo driver, exchange servo driver and exchange brushless motor and be connected, the silicon controlled rectifier module passes through power resistance and is connected with exchanging brushless motor. When the simulation turntable normally works, a closed loop system formed by an RTX control system according to angle feedback calculates in real time and outputs an analog quantity DA value to an alternating current servo driver through a PCI1723 board card, and the alternating current servo driver drives an alternating current brushless motor to operate in a current loop mode; when the turntable gives an abnormal alarm, on one hand, the RTX control system cuts off an enabling signal and a DA signal of the alternating current servo driver, and on the other hand, a signal is given to control the silicon controlled module, so that the safe braking of the alternating current brushless motor is realized.)

1. The utility model provides a emulation revolving stage braking system based on silicon controlled rectifier module, includes RTX control system (1), exchanges servo driver (2), silicon controlled rectifier module (3) and exchanges brushless motor (5), its characterized in that, RTX control system (1) is connected with exchanging servo driver (2), PCI1723 integrated circuit board (6), silicon controlled rectifier module (3) respectively, PCI1723 integrated circuit board (6) are connected with exchanging servo driver (2), exchange servo driver (2) and exchange brushless motor (5) and be connected, silicon controlled rectifier module (3) are connected with exchanging brushless motor (5) through power resistor (4).

2. Simulation turntable brake system based on thyristor module according to claim 1, characterized in that the thyristor module (3) is a SKKH series thyristor module.

Technical Field

The invention relates to a simulation turntable braking system based on a silicon controlled module.

Background

The simulation turntable is a main device for semi-physical simulation of the missile seeker or the antenna device in a laboratory, and can realize spatial attitude angle transformation, spatial speed or acceleration change and generation of a spatial flight trajectory required by the tested device. The performance of the simulation turntable is higher in requirements on static indexes, and more important are dynamic indexes such as high speed, high acceleration and frequency response of swinging motion. Due to the requirements of the size of the tested equipment and the angle of view, most darkroom simulation turntables adopt a scheme with a limited angle range, and higher requirements are provided for short-time braking when the turntables are abnormal.

Turntable braking occurs when the following protections of the control system occur: 1. out-of-tolerance protection during position movement (the specified position cannot be reached for some reason, and the difference value exceeds a set threshold value); 2. out-of-tolerance protection in rate motion (actual speed exceeds a specified speed and is greater than a threshold); 3. out-of-tolerance protection under the swinging sinusoidal motion; 4. and protection when the limit sensor is exceeded. Typically, when these phenomena occur on the turntable, the analog signal of a given AC driver is cleared by the control system, and the driver enable signal is turned off. At the moment, the rotary table is in a free state, if the speed or the acceleration before the fault is large, the limiting rotary table can impact the limiting block due to inertia, and the loaded product can be irreversibly damaged. When the electric system is designed with a braking circuit, the loss caused by the out-of-control of the rotary table can be effectively avoided.

Disclosure of Invention

The invention aims to provide a simulation turntable braking system based on a silicon controlled module, which solves the problems in the prior art and overcomes the defects of the traditional short circuit braking.

The technical scheme is that the simulation turntable braking system based on the silicon controlled module comprises an RTX control system, an alternating current servo driver, the silicon controlled module and an alternating current brushless motor, wherein the RTX control system is respectively connected with the alternating current servo driver, a PCI1723 board card and the silicon controlled module, the PCI1723 board card is connected with the alternating current servo driver, the alternating current servo driver is connected with the alternating current brushless motor, and the silicon controlled module is connected with the alternating current brushless motor through a power resistor.

Further, the silicon controlled rectifier module is an SKKH series silicon controlled rectifier module.

Advantageous effects

Compared with the prior art, the invention has the following advantages.

According to the invention, the SKKH series thyristor control module is used for controlling on-off short-circuit braking, when the turntable is abnormal, the RTX control system sends an alarm instruction to control on-off of the thyristor module, the thyristor module only has on-off states, and the problem that the thyristor module cannot be disconnected after being switched on is avoided, and the external power resistor can effectively reduce braking current and avoid damage of the alternating current brushless motor.

Drawings

The present invention will be described in further detail with reference to the accompanying drawings.

FIG. 1 is a functional block diagram of the present invention;

FIG. 2 is a schematic diagram of the braking of the AC brushless motor of the present invention;

fig. 3 is a braking schematic diagram ii of the ac brushless motor of the present invention.

Detailed Description

The invention is further described with reference to the following examples and the accompanying drawings.

As shown in fig. 1, a simulation revolving stage braking system based on silicon controlled rectifier module, includes RTX control system 1, exchanges servo driver 2, silicon controlled rectifier module 3 and exchanges brushless motor 5, RTX control system 1 is connected with exchanging servo driver 2, PCI1723 integrated circuit board 6, silicon controlled rectifier module 3 respectively, PCI1723 integrated circuit board 6 is connected with exchanging servo driver 2, it is connected with exchanging brushless motor 5 to exchange servo driver 2, it is connected with exchanging brushless motor 5 that silicon controlled rectifier module 3 passes through power resistor 4.

The silicon controlled module 3 is an SKKH series silicon controlled module.

And the RTX control system 1, the PCI1723 board card 6, the alternating current servo driver 2 and the alternating current brushless motor 5 form a loop for normal operation of the rotary table.

And the RTX control system 1, the silicon controlled module 3, the power resistor 4 and the alternating current brushless motor 5 form a processing loop for abnormal operation of the rotary table.

Due to the real-time simulation requirement of the simulation turntable, the control of the turntable is based on the RTX control system 1, when the simulation turntable normally works, the RTX control system 1 calculates an analog quantity DA value to the alternating current servo driver 2 according to a closed loop system formed by angle feedback, and the alternating current servo driver 2 drives the alternating current brushless motor 5 to operate in a current loop mode; when the turntable gives an abnormal alarm, on one hand, the RTX control system 1 cuts off an enabling signal and a DA signal of the alternating current servo driver 2, and on the other hand, a signal is given to control the silicon controlled module 3, so that the safe braking of the alternating current brushless motor 5 is realized.

The simulation turntable is formed by an RTX control system 1, a PCI1723 board card 6, an alternating current servo driver 2 and an alternating current brushless motor 5 into a loop for normal operation of the turntable; an RTX control system 1, a silicon controlled module 3, a power resistor 4 and an alternating current brushless motor 5 form a processing loop for abnormal operation of the rotary table; the abnormal situations typically include the following categories: 1. out-of-tolerance protection during position movement (the specified position cannot be reached for some reason, and the difference value exceeds a set threshold value); 2. out-of-tolerance protection in rate motion (actual speed exceeds a specified speed and is greater than a threshold); 3. out-of-tolerance protection under the swinging sinusoidal motion; 4. and protection when the limit sensor is exceeded.

When the simulation turntable normally operates, firstly, an RTX control system 1 is used as a position ring of a large closed loop controlled by the whole turntable, receives angle feedback information, calculates in real time, and gives an analog quantity DA value to an alternating current servo driver 2 through a PCI1723 board card 6, and the alternating current servo driver 2 forms a current ring of a control system to drive an alternating current brushless motor 5 to operate; when an abnormal alarm signal occurs, the RTX control system 1 cuts off an analog quantity signal through the PCI1723 board card 6 on one hand, and sends out a comprehensive alarm signal as shown in fig. 3 on the other hand, so that the relay KA is triggered, three paths of normally-open electric contacts are closed after the relay coil is electrified, the direct-current voltage simultaneously enables the anodes and the cathodes of three silicon controlled rectifiers to be conducted, as shown in fig. 2, at the moment, the motors UVW are connected in series through power resistors R1, R2 and R3, the power resistor 4 can play a role in voltage division and current limitation, and the alternating-current brushless motor 5 also instantaneously generates a large reverse torque, so that the braking effect is realized.