59results about How to "Realize speed regulation function" patented technology

The invention discloses a double-layer standard squirrel cage conductor rotor high torque density permanent magnetic speed controller. The permanent magnetic speed controller comprises an input shaftand an output shaft set on the same central axis, wherein the input shaft is provided with a conductor rotor in a penetration mode, the output shaft is provided with a first permanent magnet rotor anda second permanent magnet rotor in a penetration mode, the first permanent magnet rotor and the second permanent magnet rotor can rotate with relative concentricity, the first permanent magnet rotor,the conductor rotor and the second permanent magnet rotor are sequentially concentrically sleeved in the radial direction, a first air gap is between the first permanent magnet rotor and the conductor rotor, and a second air gap is between the conductor rotor and the second permanent magnet rotor. The permanent magnetic speed controller is advantaged in that through rotation of the first permanent magnet rotor or the second permanent magnet rotor, the relative rotation angle between the first permanent magnet rotor and the second permanent magnet rotor is changed, the speed control function of the speed controller is achieved, in the speed control process, overcoming the cogging torque is only required, the function of the speed controller is different from the speed control function achieved through adjusting an axial air gap between a magnetic rotor and a conductor rotor in the prior art, and axial length of the permanent magnetic speed controller is effectively reduced.

The invention relates to a permanent magnet speed regulator with a fixed magnetic gap, and the speed regulator comprises a first internal magnetic rotor, a second internal magnetic rotor, and an external magnet rotor frame, wherein a driving shaft coaxially passes through the first and second internal magnetic rotors, and the external magnet rotor frame is connected with a driven shaft. The external magnet rotor frame is provided with an external magnetic rotor through a bearing. In addition, one end, close to the driven shaft, of the external magnetic rotor is provided with an external magnetic rotor planetary gear. A driven shaft planetary gear is disposed between the external magnetic rotor planetary gear and the driven shaft. The speed regulator employs a fixed magnetic gap structure, so the speed regulator greatly increases the engagement area, reduces the assembly difficulty, reduces the generated heat, enlarges the range of speed regulation, saves rare earth materials, and greatly improves the capability of torque transmission. Because the speed regulator employs a planetary gear transmission structure, the speed regulator achieves a function of 0-%N speed regulation of input and output rotating speeds through changing the gear ratio of the external magnetic rotor planetary gear to the driven shaft planetary gear. In addition, the speed regulator employs a bearing structure, and prevents the continuous shaking of the driven shaft in two directions from causing that the driven shaft cannot rotate normally in one direction to drive a load.

The invention particularly relates to a switch and is used to improve the structure at the contact part used for turning on and off in a switch to reduce current in each contact point and total contact resistance. The problem of poor contact at the pin joint position of a pin joint contact rod and a supporting part in the conventional switch is solved by arranging an additional elastic metal plate on the pin joint contact rod. Due to the contact part arranged on a rotary contact device at the position of a forward / reverse conversion mechanism, the total contact area is increased, current in each contact point is further reduced, and the total contact resistance and heat generation between the rotary contact device at the position of the forward / reverse conversion mechanism and an internalinput and an external output are reduced.

The invention relates to the field of integrated circuits, in particular to a speed regulation driving integrated circuit for a single-phase brushless direct current fan. An acquired temperature signal and an internal sawtooth generator signal are controlled through a pulse width modulator to realize automatic speed regulation. A reversing function is realized through the processing of a Hall amplifier and a logic controller according to a Hall sensor signal. A locking alarming function, a locked-rotor protection function and an automatic restarting function are realized by utilizing an internal locked-rotor detection and automatic restarting circuit. According to the integrated circuit, an automatic speed regulation function is realized, the auxiliary functions of rotating speed detection, locking alarming, locked-rotor protection, automatic restarting and the like are also realized, the complexity of a peripheral circuit is lowered, peripheral devices are reduced, and cost in the speed regulation of the fan is greatly decreased.

The invention provides a torque motor actuator of a linear diesel engine, comprising a torque motor, a displacement sensor, a stroke control locating iron, a shell, a controller, and the like, whereinThe invention provides a torque motor actuator of a linear diesel engine, comprising a torque motor, a displacement sensor, a stroke control locating iron, a shell, a controller, and the like, wherein the torque motor is mounted on an eccentric wheel which is adjusted and fastened in the shell, and a segment gear is mounted on the torque motor; a rack shaft is mounted on the shell by two linear bethe torque motor is mounted on an eccentric wheel which is adjusted and fastened in the shell, and a segment gear is mounted on the torque motor; a rack shaft is mounted on the shell by two linear bearings, and a spring is mounted at one end of the rack shaft; a displacement sensor is mounted at one terminal of the rack shaft, is connected with the controller and feeds offset of the rack shaft baarings, and a spring is mounted at one end of the rack shaft; a displacement sensor is mounted at one terminal of the rack shaft, is connected with the controller and feeds offset of the rack shaft back to the controller, and the output of the controller controls the torque motor. The torque motor actuator of the linear diesel engine can reliably control the rotating speed of the diesel engine, hack to the controller, and the output of the controller controls the torque motor. The torque motor actuator of the linear diesel engine can reliably control the rotating speed of the diesel engine, has higher response speed and is suitable for controlling the rotating speeds of middle-powder or small-powder diesel engines.s higher response speed and is suitable for controlling the rotating speeds of middle-powder or small-powder diesel engines.