A marine low-speed common rail diesel engine speed control unit based on μ/cos-ii real-time operating system
A real-time operating system, COS-II technology, applied in the field of marine low-speed high-pressure common rail diesel engine speed control unit, can solve the problems that a single controller is difficult to complete the control function, the number of sensors and actuators is small, and achieve low development costs and software The effect of high reliability and convenient debugging
Active Publication Date: 2021-07-16
HARBIN ENG UNIV
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However, its control object is a medium-to-high speed diesel engine. Compared with the marine low-speed high-pressure common rail diesel engine, this type of diesel engine has a simpler structure, fewer sensors and actuators and concentrated distribution, and a single control unit can complete the control function. The control of high-pressure common rail diesel engine is as mentioned above: it is difficult for a single controller to complete the control function, and multiple controllers distributed in the network need to cooperate to complete the control of the whole machine
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[0022] Below in conjunction with accompanying drawing, the present invention will be further described:
[0023] Such as figure 1 As shown, a marine low-speed high-pressure common-rail diesel engine speed control unit based on the μ / COS-II real-time operating system described in the present invention has a hardware framework composed of a single-chip microcomputer system (S111) and peripheral circuits (S108). The single-chip system module that the present invention needs to utilize and be connected with peripheral circuit has: CAN communication module (S112), ECT module (S113), on-chip clock module (S116), on-chip power supply module (S117), I / O module (S118 ), other control units (S101) are connected to the CAN communication processing circuit (S109) through CAN1 (S105) and CAN2 (S106), the upper computer (S102) is connected to the CAN communication processing circuit (S109) through CAN3 (S107), and CAN communication The processing circuit (S109) sends the CAN information to...
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The invention discloses a marine low-speed and high-pressure common rail diesel engine speed regulating unit based on a μ / COS‑II real-time operating system, belonging to the electronic control field of diesel engines. The software design of the present invention adopts the μ / COS-II real-time operating system, which is composed of interrupt tasks and tasks scheduled by the μ / COS-II real-time operating system. Tasks are coordinated and synchronized through semaphores. Among them, CAN data processing tasks, switching value detection tasks, state management tasks, fault detection tasks, FLASH flashing tasks, monitoring parameter return tasks are executed regularly, CAN sending tasks are triggered by state management tasks through semaphores, and control parameter calculation tasks are performed by The crankshaft speed interrupt is triggered by a semaphore at a fixed crankshaft angle. The beneficial effects of the present invention are: the μ / COS-II real-time operating system is adopted for software design, which has good real-time performance, high software reliability, strong stability, convenient application program expansion, convenient debugging, shortened development cycle, and reduced development cost.
Description
technical field [0001] The invention belongs to the electronic control field of diesel engines, and in particular relates to a marine low-speed and high-pressure common rail diesel engine speed regulating unit based on μ / COS-II real-time operating system. Background technique [0002] Diesel engine is currently the most common power device used in ships in the world, especially low-speed high-power diesel engine is widely used in large and medium-sized civil ships due to its characteristics of high single-machine power, good economy, and high reliability. [0003] Due to the complex composition and structure of the marine low-speed high-pressure common rail diesel engine, the whole machine is huge, there are many sensors, and the sensors are distributed in a wide range. A single controller has limited resources on the one hand, and limited processing capacity on the other hand, which cannot meet the control requirements. Therefore, it is necessary to adopt a distributed cont...
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IPC IPC(8): G05B19/042
CPCG05B19/0428
Inventor 李学民付文杰王润芝刘羽飞杨云龙冯春悦王忠巍马修真
Owner HARBIN ENG UNIV