Permanent magnet synchronous motor (PMSM) is a complex control system with non-linearity, time-varying and strong coupling. The conventional PID controller design method can not achieve good control quality (including stability, rapidity and robustness). Genetic algorithm is a kind of intelligent optimization algorithm, which has good global optimization ability, is not easy to fall into local

Through a large area alarm accident of fire alarm controller circuit in a building, the causes of fire alarm are analyzed through multi-party investigation. 　　It is determined that the failure of fire alarm system controller is caused by short circuit of fire alarm circuit to ground, and the treatment is carried out. A fire alarm

The heat dissipation performance of Insulated Gate Bipolar Transistor (IGBT) has become an important factor affecting the safety, reliability and power performance of electric motors and even electric vehicles.A new structure scheme of air-cooled radiator for IGBT motor controller of pure electric vehicle is proposed. A black-box simulation model is established for IGBT heat source

Vehicle-borne communication controller is the core device to realize the human-vehicle interconnection, which has a great impact on the electromagnetic environment of the vehicle. Based on the function and composition characteristics of the vehicle communication controller, the test scheme of its electromagnetic interference is studied, and according to its interference characteristics, the measures of restraining

This system takes laser cutting machine as the main body, realizes the development of high precision automatic distance measurement controller, in order to achieve high efficiency and high precision workpiece processing. In this paper, the overall design of the system is given, and the methods of software model building and hardware implementation are proposed. The

The synchronization of the original hydroelectric generating units with the external network and the decomposition and shutdown of the external network are all completed by manual operation. After the installation of the micro-computer controller, the hydro-generator set can be automatically connected to the grid and also has the function of cracking protection by the detection

With the maturity of wireless sensor three-dimensional space technology and the improvement of people’s requirement for three-dimensional experience, the control demand for free and convenient three-dimensional space wireless sensor technology is increasing. This paper introduces the software design of a three-dimensional perception-oriented wireless sensor controller. A three-dimensional wireless sensor technology is used to realize the

Traditional power supply is mostly analog control, although the technology has been quite mature, but there are many shortcomings: control circuit components are more complex, occupying a larger volume; flexibility is not enough, hardware circuit design is good, the control strategy can not be changed; inconvenient debugging, because of the differences in the characteristics of

At present, the control and transmission system of shaftless drive press (such as gaobao, Gauss, sauna, Baonan, etc.) on the market basically adopts the synax200 system of Bosch Rexroth company in Germany, which is composed of hardware PPC controller and IndraDrive driver. The former is the core component of the system, controlling the synchronous operation

A low power and high performance design scheme of solar controller based on STC89C52 microcontroller is introduced. The system consists of solar cell module, thermostatic element storage battery, charge and discharge circuit, voltage acquisition circuit, MCU control circuit and optocoupler drive circuit. Using pulse width modulation technology, the charging and discharging of batteries can be