97results about How to "Good speed control" patented technology

A method and apparatus (20) for intermittently cutting a moving target web (26) includes rotating a knife roll (32) having at least one knife member (44) to provide an operative knife-member speed, and rotating an anvil roll (34) having at least one anvil member (46) to provide an operative anvil-member speed. The knife roll and anvil roll have been positioned to provide an operative nip region (30) therebetween, and a substantially continuous target web (26) has been moved at a selected web speed through the nip region. A rotational positioning of the knife member has been coordinated with a rotational positioning of its cooperating anvil member to provide an operative, cutting engagement between the knife member and its cooperating anvil member, thereby cutting the moving web at cut locations which are intermittently spaced along a machine-direction (22) of the target web.

A valve actuator for an internal combustion engine is described having a core having a wound coil located therein, said core further having at least one permanent magnet located at least partially inside or outside said coil and positioned at an angle relative to a direction of movement of an armature. Further, various recesses, indentations, chamfers, bevels, and/or depressions may be included to affect flux leakage, and/or force generation.

The invention provides an AC servo system load torque and rotation inertia identification method and aims to achieve the fine dynamic and static characteristics of highly accurate control of a servo system according to the effect on the system performance by the permanent magnet synchronous AC servo system load rotation inertia and load torque. The method adopting the load inertia and motor rotor inertia as an entire inertia, allowing a servo system to perform regular forward and reverse speed increasing and decreasing movement, adopting a load disturbance torque state observer to observe the load disturbance torque changes of the motor, acquiring a model disturbance torque, adopting the integration identification algorithm, and identifying the system rotation inertia through mathematical derivation.

A method for controlling a vehicle engine having a plurality of cylinders is provided. The method comprises: during engine idling, advancing spark timing of at least one cylinder to before a peak torque timing, and retarding spark timing from the advanced timing toward the peak torque timing in response to decreased engine speed to maintain idling speed.

A valve actuator for an internal combustion engine is described having a core having a wound coil located therein, said core further having at least one permanent magnet located at least partially inside said coil and positioned at an angle relative to a direction of movement of an armature.

Skateboard speed control is achieved by improved application of a mechanism to provide even force to the wheels by a simplified speed control system. The speed control system is durable, compact, simple, uses minimal components, is ergonomic, and has speed control pads that move in sync while simultaneously tolerating variations in wheel orientation and position while a rider is maneuvering the skateboard.

A method for controlling a motor vehicle includes steps of controlling a longitudinal speed of the motor vehicle to a predetermined value and scanning an upcoming driving route with the aid of a sensor on board the motor vehicle. One end of a section of the driving route which is visible with the aid of the sensor is determined. Assuming that there is an obstacle on the driving route beyond the visible section, it is determined that a deceleration which would be required to maintain a predetermined minimum distance from the assumed obstacle exceeds a predetermined threshold value, and a signal is output to a driver of the motor vehicle.

Systems and methods for transitioning a torque source between speed control and torque control modes during a vehicle creep mode are disclosed. In one example, torque of an electric machine is adjusted in response to a torque converter model. The torque converter model provides for a locked or unlocked torque converter clutch.

An imaging system (40), safety system (58) or combined imaging and safety system (FIG. 1) for an industrial machine (20), including a light transmitter (26) and a corresponding receiver (28). In an imaging application, image data relating to a machine tool (22) and/or work piece (32) is derived from said at least one receiver and processed by an image processing means to determine information regarding said tool and/or tool position and/or extent of work carried out on said work piece. A screen (34, 46), such as a shadow screen, can be used to form an image of a profile of the tool tip and end of the workpiece. Took tip position and extent of work on the workpiece can be derived from the image, e.g., via a camera viewing an image formed on the screen. Multiple cameras may be used. A safety system application (FIGS. 10a to 10d) for halting the machine or tool when a light beam is interrupted can include a broad or block beam (62) and can provide progressive muting of beam interruption detection by progressively muting detection. Progressive muting can be achieved by systematically disregarding or muting signals from rows of receiver array elements as the beam passes through a mute point (66) ahead of the tool tip (60).

The invention discloses a robot end clamping module driven by a steering engine. The end clamping module comprises the drive steering engine capable of outputting power outwards. The power output end of the drive steering engine is connected with a steering engine output disc. The other end of the steering engine output disc is connected with one end of a worm arranged in an upper base and drives the worm to rotate forwards or backwards. A pair of drive clamping arms is further hinged into the upper base in a bilateral symmetry mode. The worm is in engaged transmission connection with the drive clamping arms, so that the drive clamping arms swing around the hinge center of the upper base. The clamping ends of the drive clamping arms can be reunited or separated. Compared with the prior art, the robot end clamping module driven by the steering engine has the advantages of being simple in structure, small in size, compact, flexible to operate and the like; control under conditions of various torque, speeds and positions can be achieved by controlling the steering engine motion mode; and a lower base is of a replaceable structure, and can cooperate with ends of different robots for operation quite conveniently, so that a work procedure needing to prevent workpieces from being damaged during clamping is efficiently completed.

A method is disclosed for controlling operation of a engine coupled to an exhaust treatment catalyst. Under predetermined conditions, the method operates an engine with a first group of cylinders combusting a lean air-fuel mixture and a second group of cylinders pumping air only (i.e. without fuel injection.) In addition, the engine control method also provides the following features in combination with the above-described split air/lean mode: auto speed control, sensor diagnostics, air-fuel ratio control, adaptive learning, fuel vapor purging, catalyst temperature estimation, and default operation. In addition, the engine control method also disables the split air/lean operating mode under preselected operating conditions.

A system and method for controlling a rotational closure system, such as a lift gate, of a vehicle may include sensing an angle of the rotational closure system, generating a drive signal, driving a drive mechanism with the drive signal to output a mechanical force for moving the rotational closure system, generating an angle signal having a digital pulsewidth modulation form with a duty cycle based on the angle of the rotational closure system, feeding back the angle signal, and, in response to the feedback angle signal, altering the drive signal while the drive mechanism is moving the rotational closure system between open and closed positions. In one embodiment, the angle signal is generated from a location disposed on the rotational closure system. A controller mounted to the rotational closure system may include an angle sensor and be configured to receive and process the angle signal to drive the drive mechanism.

The invention teaches a speed control system for a brushless DC motor for a ceiling fan, comprising a power circuit 1, a microprocessor circuit 2, a power drive circuit 3, a speed regulation circuit, and a brushless DC permanent magnetic motor 5, wherein the input terminal of the power circuit 1 is connected to the output terminal 101 of an AC power source, the output terminal of the power circuit 1 serves to power the various circuits, the output terminal of the microprocessor circuit 2 is connected to the input terminal of the power drive circuit 3, the output terminal of the power drive circuit 3 is connected to the coil windings 501 of the brushless DC permanent magnetic motor, and the output terminal of the speed regulation circuit is connected to the input terminal of the microprocessor circuit 2. The speed control system of the invention provides the advantages of low energy consumption, low noise during the operation of the motor, and a stable operation at low speeds.

Providing camera apparatus and a camera system capable of performing optimum speed control by themselves and even facilitate tracking of a subject by way of a plurality of cameras while using a same controller, even in case the location of the camera or the distance between the camera and the subject has changed, and a method for controlling the camera system The camera apparatus includes: a camera for photographing a subject; a rotating body for rotating the camera in order to track the subject; and a controller for controlling the motion of the rotating body and the operation of the camera; characterized in that the controller includes: an operation determination unit for analyzing and determining the input operation instruction information on the rotating body and the camera; a data holding unit for holding the status information on the photographing operation of the camera; a main control unit for calculating an optimum speed to track the subject based on the information output from the operation determination unit and the data holding unit and outputting the speed to the rotating body; and a drive unit for driving the rotating body.

The invention discloses a multi-redundancy landing gear electric retraction controller, and aims to provide a controller with light weight, small size, good reliability and strong environmental adaptability. According to the technical scheme, a main control CPU combination module is connected with a standby control CPU combination module and is correspondingly connected with a main control drivingcombination module and a standby control driving combination module through forward rotation and reverse rotation, output enabling, start setting 1, motor speed regulation, current sampling and hardware cut-off control lines respectively; the main control CPU combination module and the standby control CUP combination module are connected with a switching module and a standby switching module through driving main and standby control switching signal lines and a motor driving control line; the main and standby switching modules are connected with a landing gear motor unit through the motor driving signal line; the main control CPU combination module receives a landing gear retraction command, controls logic processing and sends a motor control command; the main control driving combinationmodule and the standby control driving combination module receive motor control commands of the main control CPU combination module and standby control CPU combination module and a motor Hall sensor signal.

The invention provides a non-woven carding dust-removing device. The non-woven carding dust-removing device comprises a dust-removing box, wherein a cloth inlet is formed in one end of the dust-removing box and a cloth outlet is formed in the other end of the dust-removing box; a cloth inlet steering roller is arranged at the cloth inlet and in the dust-removing box; a cloth outlet steering roller is arranged at the cloth outlet and in the dust-removing box; a carding roller is arranged in the dust-removing box; a cloth pressing roller is arranged over the roller surface of the carding roller and is arranged at the bottom of an adjusting shaft; an upper dust-absorbing pipe is arranged on each of the two sides of the cloth pressing roller; the upper dust-absorbing pipe passes through the top of the dust-removing box and extends to be above the carding roller; a lower dust-absorbing pipe is arranged below the carding roller and in the dust-removing box. By adoption of the scheme, the non-woven carding dust-removing device has a simple structure, good speed-controlling effect and low use cost and can remove dust.