193 results about "Electric motor" patented technology

An end of arm tool has a mounting bracket mounting the end of arm tool to the robot arm for movement therewith and has a plurality of operating mechanisms mounted to the mounting bracket, a plurality of gripping devices each operatively connected to a respective operating mechanism and movable along a path, and a plurality of individual motors each operatively connected to a respective gripping device for moving the respective gripping device along its respective path. At least one programmable controller for operating the motors is provided to adjust the positions of the gripping devices along their respective paths to one of a plurality of predetermined positions established by the controller for gripping the article and to position the end of arm tool adjacent the article so that at least one of the gripping devices grips the article.

A control circuit is for an electric power plant including an asynchronous generator of an AC voltage, a motor to rotate a rotor of the asynchronous generator as a function of a first control signal of a developed motor torque, and a bank of capacitors coupled to the asynchronous generator and having a total capacitance varying as function of a second control signal. The control circuit may include a monitor circuit to monitor at least one parameter of the AC voltage, and a control signal generator circuit cooperating with the monitor circuit to generate the first and second control signals by soft-computing techniques both as a function of the frequency and of a representative value of an amplitude of the AC voltage to make the AC voltage have a desired amplitude and frequency.

The present invention provides a blade driving mechanism for a table saw, wherein the table saw comprises a main frame and a saw blade mounted to and driven by the blade driving mechanism, and the blade driving mechanism comprises an electrical motor mounted to the main frame, with the motor being capable of sliding with respect to the main frame; a belt driving system for transferring the rotation of an output shaft of the motor to the saw blade; a center-distance setting means connected between the motor and the saw blade, for adjustably setting the center-to-center distance between the motor and the saw blade; and a saw-blade height adjusting device being operable to adjust the height of the of the saw blade. saw-blade height adjusting device comprises a transverse shaft being capable of rotating about a horizontal axis; a handwheel fixed to the outer end of the transverse shaft for driving the transverse shaft to rotate; a vertical screw shaft coupled with the transverse shaft by a set of bevel gears and is driven by the transverse shaft to rotate about a vertical axis; a nut mounted on and engaged with the screw shaft and being capable of moving along the screw shaft by the rotation of the screw shaft; and a guide connected to the nut and supporting the saw blade.

The end mill grinding device of the present invention includes a tool spindle assembly, which enables multi-axis positioning of a rotating cutting tool being sharpened, and a motor tower, which enables multi-axis positioning of a grinding or cutting wheel for sharpening the end mill tool. The present invention combines linear sharpening and radial tool end grinding capability in the same machine element.

The invention discloses a mechanical device, in particular a chain-plate compost turning machine for production of organic compost. The chain-plate compost turning machine comprises a frame, a travelling mechanism, a chain-plate turning mechanism, a lifting system and an automatic control system. A driven wheel set and a driving wheel set are mounted at front and rear ends of the lower portion of the frame respectively. The driving wheel set is driven by a travelling motor set which is connected through a spindle. The driving wheel set is disposed on a travel rail of the travelling mechanism, and meanwhile, the chain-plate turning mechanism and the lifting system are driven by corresponding motors, thus coordinative operation of the systems is achieved. The chain-plate compost turning machine has the advantages that two travelling motors are used for control so that continuous operation of the machine is ensured; compost material in a fermenting tank is thrown, aerated and mixed by a rotary chain-plate hooked-tooth turning and scattering mechanism, efficiency is high, turning distance is long, turning is thorough, fermenting period can be shortened effectively, and compost quality is improved; the chain-plate compost turning machine is more adaptive and flexible.

An electric connector that is connectable to other connectors by many types of connection while waterproofing of the electric connector is maintained. The electric connector includes a connection holding part configured to hold a connection state with another connector by each of a plurality of types of engagement. The connection holding part includes a plurality of sections sectionalized in a relative moving direction for electrically connecting the electric connector to another connector. Each of the plurality of sections includes an engaging part corresponding to one of the types of engagement different from one another.

The present invention provides a motor control device, which realizes desired high-accuracy advanced angle control of brush-less DC motor with simple and low-cost structure. In the motor control device, a phase adjusting circuit is provided, which is composed of a combined circuit of resistances (R1-5) and diodes (D1-4), and processes the speed instruction into voltage similar to fold lien of optimum phase angle control characteristic corresponding to speed of the brush-less DC motor to form phase angle signal, and by adjusting the combination of resistances (R1-5) and diodes (D1-4), the speed instruction is processed into voltage similar to fold lien of optimum phase angle control characteristic corresponding to speed of the brush-less DC motor to form phase angle signal of the voltage corresponding to the optimum phase angle control characteristic, and execute high-accuracy advanced angle control for phase of power supply of the brush-less DC motor according to the phase angle signal.

A stator coil of a slotless motor is disclosed in which the stator coil is formed in such a manner that respective both distal ends of two unit coil bodies, each unit coil body arranged to face each other, are respectively coupled to form a plurality of circular coil bodies, each circular coil body having a different inner diameter, and a circular coil body having a smaller inner diameter is sequentially inserted into an inner side of a circular coil body having a larger inner diameter, whereby a horizontal width of the plurality of unit coil bodies of U, V and W phases is equal there among to cause the strength of the magnetic field of U, V and W phases to be equal, and to allow the stator to be accurately manufactured, thereby catering to a designer's intention and markedly simplifying the assembly processes.

The invention discloses an automatic guide type spray irrigating machine and a spray irrigating method for a greenhouse. The spray irrigating machine comprises a differential steering chassis, a micro control system, a water supply system and a storage battery, wherein the differential steering chassis includes a vehicle frame, a left driving system, a right driving system and omnidirectional wheels, power is supplied to the left driving system and the right driving system through the storage battery to drive the spray irrigating machine to travel. As the differential steering chassis is employed, the spray irrigating machine can travel and steer automatically along with a guide line under the control of the micro control system, without needing manual removal or special rail-based transfer; and during the travelling, water in a water tank is pumped by a water pump and is sprayed through a nozzle to realize spray irrigation; a master controller is configured to calculate amount of deviation of the spray irrigating machine from the guide line during the travelling process and give a control command to control revolving speeds of a left electric motor and a right electric motor, so as to enable the spray irrigating machine to travel along the guide line all the time. The spray irrigating machine disclosed by the invention has the advantages that the labor intensity is reduced, the cost for greenhouse construction and spray irrigating machine investment is lowered, the running distance of a single spray irrigating machine is not limited, the spray irrigating area for the greenhouse is large, the structure is simple, the automation degree is high and the practicality is strong.