45results about How to "Control drive" patented technology

The invention discloses an automobile kinetic energy conversion and recovery device. The automobile kinetic energy conversion and recovery device is used for storing energy during subway braking and recovering kinetic energy during starting. The automobile kinetic energy conversion and recovery device mainly comprises an eccentric wheel, hydraulic plungers and a corresponding hydraulic loop. During subway braking, the eccentric wheel and an axle rotate synchronously, so that the built-in hydraulic plungers conducts reciprocating radial motion; hydraulic oil is pressed into an energy accumulator through the hydraulic plungers on the basis of the design of the corresponding hydraulic loop, and therefore kinetic energy of the automobile is converted into hydraulic energy to be stored. During subway starting, the device is used as a low-speed large-torque hydraulic motor on the basis of switching control over an electromagnetic valve to push a subway to achieve kinetic energy recovery. According to the automobile kinetic energy conversion and recovery device, the hydraulic mode is utilized for energy storage, braking energy is not converted into electric energy and is just stored as hydraulic energy, and the efficiency is much higher than that of the existing energy storage mode.

Disclosed is an apparatus for controlling a driving of a reciprocating compressor and a method thereof, in which a cooling capacity is decreased without a re-expansion loss by controlling a driving of a compressor used in a refrigerator by using a current offset when the cooling capacity of a refrigerator is varied. To this end, in the compressor which controls the cooling capacity by varying an inner stroke according to a stroke reference value set by a user, the apparatus comprises a storage unit for storing a current offset value corresponding to a cooling capacity variable amount; an adding unit for adding the current offset value to a current value applied to the compressor in accordance with that the cooling capacity is varied by a user; a microcomputer for generating a switching control signal corresponding to the current value added from the adding unit; and a power supply unit for controlling a driving of the compressor by applying the added current to the compressor under a dependent state on the switching control signal.

The present invention relates to a method for detecting position signal of switch reluctance machine, and is characterized by that on the equipment consisting of power supply circuit, microcomputer for controlling said power supply circuit and driving circuit it utilzies a position sensor to detect the position of rotor, and adds the pulse signal related to said position on the correspondent switch device and measures the current value on the correspondent switch device after a certain time, them compares the measured current value with reference current value to obtain compared result, according to the compared result said invention can adopt the mode of properly adding pulse signal and regulating pulse current to make said electric machine normally operate.

The invention discloses a driving clutch assembly of a washing machine. The driving clutch assembly of washing machine comprises a rotary body and a driving device. The driving device comprises a reducing mechanism, a clutch mechanism and an installation shell. The rotary body is an outer-rotor motor and comprises an outer rotor assembly and an inner stator assembly, wherein the inner stator assembly is located in the outer rotor assembly; the clutch mechanism comprises a clutch assembly and a shift lever assembly, the input end of a driving shaft and the input end of a driving shaft sleeve are sleeved with the clutch assembly, and driving force is transmitted to the clutch assembly through the shift lever assembly, wherein the clutch assembly is provided with a clutch shaft sleeve and a wrap spring assembly, and the input end of the driving shaft is sleeved with the clutch shaft sleeve. According to the driving clutch assembly of the washing machine, while the conditions that the structure is simple and compact and the occupied space is small are met, the cost is low, few connection parts are used, the manufacturing process is simple, and the driving clutch assembly is very suitable for large-scale application and popularization and especially suitable for being used in the field of medium-low-grade washing machines which are used in wide households.

The invention discloses a multifunctional automobile chassis component test bench, relates to a test bench. The test bench comprises a basic fixed bracket for supporting a whole actuator, the actuator for providing driving force to the test bench frame, a lifting mechanism which is removably arranged on the basic fixed bracket and is used for driving the actuator to actuator to carry out up and down precise adjustment, a connection rod which is connected to the actuator, and a control system which is electrically connected to the actuator and is used for precisely controlling the driving power needed by a test. According to the multifunctional automobile chassis component test bench, through the control system and the lifting mechanism, the driving of the whole actuator is precisely controlled, thus the whole test bench is more intelligent and accurate, the precise adjustment of the actuator is realized, and the test precision and working efficiency are improved. By using different modes, the actuator is fixedly connected, the test bench can test the stiffness, strength and durability of different automobile chassis components, the use of the multifunctional automobile chassis component test bench is flexible, and the application range of the test bench is increased.

In a rotating electric machine control device, a voltage command value calculation section calculates a voltage command value based on a current command value and a motor current. An inverter power estimation section estimates an inverter power based on the motor current. A power supply current estimation section estimates a power supply current based on the inverter power and a power supply voltage. A limit gain determination section determines a limit gain based on the power supply current and a target power supply current. A limited voltage command value calculation section calculates a limited voltage command value based on the voltage command value and the limit gain. A current limitation section is capable of limiting the power supply current by outputting a command value corresponding to the limited voltage command value to an inverter portion.

The invention discloses a washing machine driving system and a washing machine. The system comprises a rotating body and a transmission device, the transmission device comprises a speed reducing mechanism, a clutch mechanism and a mounting shell, the rotating body is a PSC motor and comprises an outer rotor component and an inner stator component located inside the outer rotor component; the speed reducing mechanism comprises a gear speed reducer, a drive shaft connected with the gear speed reducer and a drive shaft sleeve which is arranged outside the drive shaft in a sleeving mode and rotationally connected with the drive shaft, and the input end of the drive shaft is fixedly connected with the outer rotor component; the mounting shell comprises a stator mounting disc and a mounting plate, and the speed reducing mechanism is located in a cavity formed by the stator mounting disc and the mounting plate which are fixedly connected. Accordingly, the conditions that the structure is simple and compact, and the occupied space is small are met, and meanwhile the motor size is small, the cost is low, few connecting parts exist, the manufacturing technology is simple, and the washing machine driving system is very suitable for large-scale application and popularization and especially suitable for being applied to the field of mid-low-end washing machines used by wide households.

The invention discloses an asymmetric half-bridge flyback drive circuit, and the circuit comprises a complementary PWM generator, two drive transformers, and a series asymmetric flyback circuit. The separation of the drive transformers enables on/off switching tubes of the circuit to be respectively controlled, thereby improving the quality of a drive signal, and reducing the false triggering caused by the level changes. The dead zone time between the switching tubes is mainly controlled by a complementary signal because of the separated winding, thereby enabling the impact on the dead zone from the drive transformers to be the minimum. In a wide-range and high-input-voltage switching power application, the circuit, compared with the prior art, enables the reliability of a product to be improved.

The present invention aims at providing a sealing zipper which, with a relatively simple structure, also ensures absolute fluid tightness even in the region of the slider of the zipper. A pair of zipper support strips (2, 3) of the sealed zipper (1) are further provided with a flexible cover at the connected end portion above the guide edge (14), the size of which is limited to make the slider (10) smoothly Elastomer that is guided and has the necessary compressive force to ensure a seal. And, on the side away from the joint ends of the above-mentioned zipper support tapes (2, 3) away from the coupler row (4, 5), due to the formation of a suitable size, elastic, engaged in the slider (10 ) is a U-shaped elastic cam (21) on the underside of the upper plate (12), so the slider (10) can slide smoothly at the connected ends of the support belts (2, 3), and can ensure an absolutely reliable seal sex.

The invention discloses a steel belt steady-speed operation control method. According to the steel belt steady-speed operation control method, a common motor with a constant operation speed is adopted, and a permanent magnet eddy current flexible transmission ASD is arranged between the motor and a steel belt driving roller; a PID simulation constant speed control system and a simulation output sub module are arranged in PLC; a steel belt speed tester is arranged at the outlet of an annealing furnace; the PID simulation constant speed control system is used for realizing proportion, integrating, and differentiation processing of the difference value between an annealing furnace outlet steel belt speed process value and a preset value, outputting standard 4-20MA control signals, controlling each ASD, controlling steel belt speed via adjusting magnetic induction intensity between permanent magnet loading of the motor and the steel belt driving roller, and ensuring steel belt steady speed operation, wherein the annealing furnace outlet steel belt speed process value is obtained via testing by the steel belt speed tester. The steel belt steady-speed operation control method is capable of reducing motor vibration and wear, eliminating motor resonance hidden troubles, saving energy, ensuring stable steel belt operation speed, eliminating belt broken accidents, and improving silicon steel product quality; control is accurate; installation is convenient; and when the steel belt steady-speed operation control method is compared with a variable-frequency speed-regulation modulation method, 20% of electric energy is saved.

The invention belongs to the field of mobile robots and particularly relates to a walking mechanism of a multi-foot robot. The provided walking mechanism of the multi-foot robot comprises robot walking feet, a robot walking foot posture control device and a robot walking crawler belt, wherein each robot walking foot comprises three joints which are fixed to the robot walking crawler belt and can be controlled by the robot walking foot posture control device, and the robot walking feet have the function of providing a force for gripping the ground and supporting other supported objects; the robot walking foot posture control device is mainly used for controlling the walking feet to be opened for gripping in time. Instead of directly touching the ground, the robot walking crawler belt touches the ground through the walking feet fixed to the robot walking crawler belt to achieve forward and backward movement of a robot. The walking mechanism combines the characteristics of multi-foot walking and crawler-type walking, not only is the obstacle crossing capability improved, but also the structure and control complexity of the multi-foot robot is reduced, and the walking mechanism of themulti-foot robot has a significant meaning on the mobile robots under a complex environment.

The invention relates to a sharp-curve tunnel track-laying vehicle, comprising at least two vehicle body segments, driving devices and a track gripping mechanism; the adjacent vehicle body segments are connected through a flexible rotating pendulum, each vehicle body segment is provided with one driving device, the driving devices are used for driving the vehicle body segments to move, and the track gripping mechanism is arranged on the vehicle body segments and used for picking and laying a track. The sharp-curve tunnel track-laying vehicle has the advantages that vehicle body segments can optionally rotate relative to one another, laying of a small-radius curve track is facilitated, and a power system has lower consumption of manpower and material resources.