Inverse time limit power driving controller and control method thereof
A technology of power drive and control method, which is applied in the direction of emergency protection device with automatic disconnection, measurement using digital measurement technology, electrical components, etc., and can solve the problems of low real-time current, high software complexity, and low system reliability , to achieve the effect of reducing tripping misoperation, simplifying software algorithm, and high application value
Pending Publication Date: 2021-11-09
XIAN AVIATION COMPUTING TECH RES INST OF AVIATION IND CORP OF CHINA
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Problems solved by technology
[0005]
The purpose of the present invention is: In order to solve the problems in the background technology, the embodiment of the present invention proposes an inverse time-limit power drive controller and its control method to solve the software complexity of using the traditional inverse-time power drive controller to realize over-current protection High, low system reliability, and slow response due to low real-time current sampling
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[0040] In order to make the purpose, technical solution and advantages of the present invention more clear, the embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined arbitrarily with each other.
[0041] It has been explained in the above background technology that the traditional inverse time power drive controller is implemented based on a microcontroller (MCU), and realizes energy calculation, energy integration and trip protection based on real-time sampling current to realize overcurrent protection for discrete interfaces. The software complexity for implementing the above-mentioned overcurrent protection method is high, the system reliability is low, and the real-time performance of current sampling is low, resulting in a slow response speed of the microcontroller...
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The invention discloses an inverse time limit power driving controller and a control method thereof. In the controller, an energy step length configuration module is configured with an energy step length lookup table, and is used for outputting corresponding energy information according to a plurality of input overcurrent indication signals and capability step length items corresponding to the overcurrent indication signals in the energy step length lookup table; an energy accumulation module is used for accumulating the maximum energy information into the last energy accumulation result and outputting a current energy accumulation result; an energy comparison module is used for outputting a tripping indication signal through comparison; and a logic control module is used for outputting a driving control signal for controlling enabling of a rear-end driving circuit according to the tripping indication signal and a control instruction sent by an upper computer. According to the technical scheme, the problem that software complexity is high and system reliability is low when a traditional inverse time limit power driving controller is adopted to achieve overcurrent protection, and the problem that the response speed is low due to the fact that real-time performance of current sampling is low are solved.
Description
technical field [0001] The present invention relates to but not limited to the technical field of digital circuits, and in particular relates to an inverse time-limit power drive controller and a control method thereof. Background technique [0002] The aircraft electromechanical system contains a large number of power 28V / on discrete output interfaces, which are used to drive valves or supply power to sensors and actuator loads. [0003] This safety protection has always been a difficult point in the design of aircraft electromechanical systems. The safety protection of high-power discrete output interfaces is usually implemented by inverse time-limit power drive controllers. The traditional inverse time power drive controller is implemented based on a microcontroller (MCU). The microcontroller implements current sampling through the AD converter, and realizes energy integration based on the real-time sampling results of the current, and turns off the discrete power supply ...
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Login to View More IPC IPC(8): H02H3/093H02H3/04H02H1/00G01R19/25
CPCH02H3/093H02H3/04H02H1/0007H02H1/0061H02H1/0092G01R19/25
Inventor 屈盼让肖鹏呼明亮蔡晓乐张倩倩孙少华
Owner XIAN AVIATION COMPUTING TECH RES INST OF AVIATION IND CORP OF CHINA