32results about How to "Prevent flying car" patented technology

The invention discloses a wind and solar general type new energy intelligent control system and method. The wind and solar general type new energy intelligent control system comprises a wind and solar generation module, a CPU, a wind energy maximum power point tracking control module, a charge-discharge control module and an unloading control system. The CPU detects state of each variable and the current working mode of the system in real time so as to judge and determine how working modes are switched, so that when the working modes are switched, the system keeps reliable and operates stably. The wind and solar general type new energy intelligent control system and method achieve a storage battery power detection function and a storage battery intelligent charge-discharge management function, the defects that a storage battery is over charged, over discharged and over heated are overcome reliably, meanwhile, unloading is controlled in the mode with PWM stepless unloading and fully connected unloading combined, so that a draught fan is effectively protected, galloping is prevented, electric energy is utilized as much as possible, and the efficiency of the system is improved.

A brake machine for a belt conveyor in a coal mine roadway comprises a machine frame, the top of the machine frame is provided with a top beam in the front-and-back horizontal direction, a plurality of jacks or oil cylinders are arranged below the top beam, the axes of the jacks or the oil cylinders are located in the vertical direction, a base of each jack or a base of a cylinder body of each oil cylinder is hinged to the lower end of a beam in a connected mode, each jack or a piston rod of each oil cylinder is fixedly connected with the top end of an upper belt clamping plate, and an upper soft cushion is fixed at the bottom end of the upper belt clamping plate. A lower belt clamping plate is arranged below the upper belt clamping plate, the plane of the lower belt clamping plate is located in the horizontal direction, a lower soft cushion is fixed at the top end of the lower belt clamping plate, the lower belt clamping plate is fixed on the top of a bottom beam, and the bottom beam is fixed on the machine frame. The brake machine for the belt conveyor in the coal mine roadway has the advantages that the belt conveyor can be fast braked before belt flying or during the belt flying process, the serious fault of the belt conveyor can be avoided, and the normal operation of coal mine production can be ensured.

The invention relates to an electric vehicle with an automatic wave function. A single-chip microcomputer circuit with an automatic wave function program, a driving circuit, a Hall sensing signal input terminal, a negative electro-dynamic potential collecting and processing circuit, a speed regulation input terminal, a brake signal input terminal and a gear signal input terminal are arranged on an electronic circuit board of a controller of the electric vehicle; the single-chip microcomputer circuit with the automatic wave function program is used for detecting signals fed back or output through the above functional circuits to identify the difficulties during abrupt slope climbing, overload driving, accelerated starting or overtaking and the requirement of increasing the power under different speed conditions during pushing or driving, and a high-power gear is switched through an automatic wave; after abrupt slope climbing, overload unloading, accelerated starting or overtaking driving brake, an economic gear is switched through the automatic wave. When the circuit of the electric vehicle breaks down, a low speed gear is switched through the automatic wave for continuously safe driving; failure modes can be promoted through voice loudspeaker, so that failures are temporarily and automatically repaired, and the electric vehicle drives at a low speed.

The invention discloses a starting power generation system for an auxiliary power unit for a vehicle. In the engine starting process, a permanent magnet motor is subjected to constant torque control to drive an engine to ignite, and when an engine speed reaches the idle speed, the output torque of the permanent magnet motor is controlled to be zero. In the power generation process, a running speedcommand of the engine and a torque command value of the permanent magnet motor are obtained through table look-up according to a generated power request of the system and a universal characteristic curve of the engine. The engine performs closed-loop control according to a speed command value obtained by table look-up, and the stability of the engine speed is realized by adjusting the engine throttle opening degree in real time. The permanent magnet motor obtains a torque current command value through table look-up according to a torque command, and realizes the current closed-loop control through a PI regulator. According to the starting power generation system for the auxiliary power unit for the vehicle, the starting torque is stable, and the engine can be successfully started; and thequality of electric energy is high during power generation, and the fuel economy of the engine is good.