163results about How to "Steering precision" patented technology

An offtracking control system for a vehicle/trailer combination that properly steers the rear wheels of the vehicle to control the hitch angle between the vehicle and the trailer to prevent trailer offtracking. The control system generates a desired hitch angle and a time delay between the front wheels of the vehicle and the rear wheels of the trailer. A delay unit generates a hitch angle command from the desired hitch angle and the time delay. The hitch angle command is subtracted from a measured hitch angle to generate a hitch angle error signal. The hitch angle error signal is sent to a feedback controller that generates a closed-loop rear-wheel steering signal. The closed-loop rear-wheel steering signal is added to an open-loop rear-wheel steering signal to generate a rear-wheel steering command signal that prevents trailer offtracking.

The invention discloses a building wall construction robot, which comprises a crawler unit, a rotary turntable device, a retraction regulating mechanical arm, a construction tool lifting device, a plaster hopper device, a construction position locking device, a trackless guide device and a power device. The building wall construction robot is compact in structure, stable in walking, flexible in movement, and accurate in direction change; the construction tool has large lift; the construction tool lifting device is full automatic; and the construction process completely simulates a manual plastering mode, trackless guide is adopted, the trouble of laying a guide rail is avoided, and the construction quality and construction efficiency are greatly improved.

An electric power steering apparatus including: a steering angle control section that calculates a motor current command value and a switching section that inputs the motor current command value to switch. The steering angle control section has a feedback control section that generates a feedback control current command value; an SAT compensating section that generates an SAT compensation current command value; and an output section that generates the motor current command value from the feedback control current command value and the SAT compensation current command value. The switching section is switched depending on a switching command of an automatic steering mode and a manual steering mode, a motor is drive-controlled based on the motor current command value in the automatic steering mode.

The invention provides a dual-motor wire-controlled complex steering system and a control method thereof. The dual-motor wire-controlled complex steering system comprises a steering wheel, a steeringcolumn assembly, a road sense assembly, a dual-motor steering execution device and a steering control unit, and steering control of the system is completed through an adaptive control method. According to the dual-motor wire-controlled complex steering system, integration and unification of steering performance such as larger steering torque, lower energy consumption, faster response speed can berealized, steering control parameters are adjusted automatically according to actual driving situation, uncertainty in driving environment can be better resisted, and steering accuracy and vehicle safety are ensured.

The invention relates to the field of unmanned control methods, in particular to a course control system and method for an unmanned surface vehicle. The control system comprises an upper computer, a transmission station and a lower computer. The control method includes the set steps that an expected course is input in a human-computer interaction interface of an upper computer operating deck and transmitted to the lower computer through the transmission station; information is acquired and transmitted, wherein unmanned surface vehicle comprehensive information acquired by the lower computer is transmitted into the upper computer through the transmission station; and control is conducted, wherein the upper computer conducts calculation and processing according to the received unmanned surface vehicle comprehensive information, a rudder angle delta is output and transmitted to the lower computer, and the rudder direction is automatically changed through a course control device, so that the course of the unmanned surface vehicle is adjusted. The system and method have the beneficial effects that maneuverability is high, robustness is strong, a stepping motor and a bevel gear wheel are simultaneously adopted for driving the steering course control device, the control accuracy is higher, steering is more accurate, and the application prospect is good.

A prediction system for determining a set of subregions can be used for rendering a virtual world of a computer graphics application. The subregions belong to streamable objects to be used for rendering the virtual world. The streamable objects each comprise a plurality of subregions. The prediction system comprises a plurality of predictor units arranged for receiving from a computer graphics application information on the virtual world and each arranged for obtaining a predicted set of subregions for rendering a virtual world using streamable objects. Each predicted set can be obtained by applying a different prediction scheme. A streaming manager is arranged for receiving the predicted sets of subregions, for deriving from the predicted sets a working set of subregions to be used for rendering and for outputting, based on the working set of subregions, steering instructions concerning the set of subregions to be actually used.

An automotive road milling machine, in particular large milling machine, for milling a ground surface or traffic surface, with a chassis provided with a front axle and a rear axle, consisting of crawler track units or wheels, a machine frame carried by the chassis with lateral outer walls and a longitudinal centre-line, a milling drum supported at the machine frame between the crawler track units or wheels of the front axle and the rear axle, where one front end of the milling drum reaches as far as an outer side of the machine frame called the zero side for the purpose of close-to-edge milling, and an operator station with a platform for the machine operator, it is provided that the part of the machine frame located on the zero side in front of the platform of the machine operator when seen in the direction of travel is set back inwards in such a manner that a recess running in vertical direction and open towards the outer side, as well as towards the bottom and towards the top is formed in the machine frame, the said recess widening downwards and towards the front when seen in the direction of travel.

A control device for controlling a steer-by-wire steering control device includes a switch mechanism for detaching a main motor and transmitting a rotation of a sub motor to establish a failsafe mode in which a turning is possible. A first control device controls a reactive force actuator and the sub motor. A second control device drives a main motor. The first control device has an abnormal case switch command unit and, when receiving a result of diagnosis that the main motor fails to operate properly, or when the mutual trouble diagnosis unit diagnoses that the second control device is in a trouble, the switch mechanism is set to the failsafe mode.

The invention provides a drive-by-wire independent steering-driving integrated double wishbone suspension system based on a double crank mechanism. The drive-by-wire independent steering-driving integrated double wishbone suspension system based on the double crank mechanism comprises a wheel steering angle sensor, a worm gear reducer, a servo motor, a bracket, an upper swinging arm, a driving rod, a driving rod ball, a connecting rod, a lower swinging arm, a lower swinging arm ball stud, a hub, a driven rod ball, a steering knuckle, a driven rod, an upper swinging arm ball stud, a PID (Proportion Integration Differentiation) controller and a CAN bus system. The invention is advantaged in that a steering mechanism does not occupy additional space during realizing drive-by-wire four-wheel, the steering error is furthest reduced, the adverse effect of the wheel hop on the working state of a decelerating device when a vehicle runs on a complicated pavement can be effectively decreased, and toe-in interference caused by reverse input can be effectively avoided. As steering wheel signal feedback is also included, the closed-loop control of the system can be realized, accurate steering can be realized and the vehicle steering performance can be very well improved. The excellent effects are extremely helpful for the promotion of the drive-by-wire independent steering-driving integrated double wishbone suspension system in the vehicle industry.

The invention provides a steering controlling method of an automatic steering device of an unmanned vehicle. The steering controlling method comprises the following steps that an absolute zero position is demarcated; a steering controller controls the unmanned vehicle to enter an automatic driving mode; the steering controller amends an expected steering angle of an output shaft of a motor (111); the steering controller obtains an actual steering angle of the output shaft of the current motor (111) through an encoder (115); and the steering controller controls an algebraic difference value of the expected steering angle and the actual steering angle, and steering is achieved. The controlling steps are simple; switching between manual driving and automatic driving can be completed; software is adopted to conduct limiting; setting is relatively flexible; the phenomenon of overlarge steering of a steering wheel can be effectively prevented; and precise steering is achieved.

The invention relates to a device for the extraction of water from atmospheric air (8), with a flowing adsorbent or absorbent, in particular a saline solution (3), comprising a hygroscopic salt for the adsorption or absorption of the water, whereby the adsorption or absorption occurs along an adsorption or absorption path (7). A reduction in the assembly requirements and an increased yield of (potable) water per volume unit of the construction or absorbent/adsorbent (3) can be achieved, whereby the flowing adsorbent (3, 13) or absorbent (3, 13) is arranged, at least along the adsorption or absorption path (7), essentially on a guide element (1, 16, 19, 22, 24) for guiding the adsorbent (3) or absorbent (3) particularly along a given track.

A device for receiving a foot or a boot onto a sports apparatus, the device including a support adapted to be located between the sole of the foot or the boot sole and the apparatus. The support includes a retractable abutment and a shock-absorbing arrangement, the abutment opposing the compression of the support up to a set value of the support compression force, the abutment retracting when the support compression force exceeds the set value, the shock-absorbing arrangement being biased beyond this set value.

The invention particularly relates to an automatic steering control method and device for a vehicle provided with an electric power steering system. The automatic steering control device based on EPS comprises the electric power steering system and an automatic steering control unit, wherein the automatic steering control device is composed of an upper computer, a control module, a torque simulation module and a mode selection module. Under the control of the control module, manual steering or automatic steering is selected by the mode selection module, steering information is transmitted to an electronic control unit, a motor is driven to work, and control over vehicle steering is achieved. The automatic steering control device is low in cost, accurate in steering, high in reliability, small in size, convenient to install and capable of being started when needed, and does not affect use of original EPS.

The invention relates to an urban gas pipe robot adapting to pipe shape change. The urban gas pipe robot mainly consists of a power leather bowl, a spring coupling, a frame, tension springs, slide blocks, support connecting rods, driven wheels, support arms, a mileage wheel, a steering engine system, a gear set, an extension system, an extension rod, a guide wheel frame, a rotating shaft, an extension spring, a guide wheel base, a guide wheel, a control system, a battery set, a motor, a steering engine control panel, a potentiometer and a motor gear set. The power leather bowl is connected with the spring coupling; the spring coupling is connected with the frame; the tension springs and the slide blocks are connected with the frame; the support connecting rods are connected with the support arms; the steering engine control panel is mounted in the steering engine system; the motor is connected with the potentiometer through the motor gear set; the steering engine system is connected with the extension rod through the gear set; the guide wheel base is fixed with the rotating shaft; and the battery set and the control system are mounted in the frame. The urban gas pipe robot is simple in structure, safe and reliable, and can be reliably operated in an urban gas pipe with a complex structure.

A micromirror array assembly (10, 20) for use in optical modules (5, 17) in a wireless network system is disclosed. The micromirror array assembly (10, 20) includes a plurality of mirrors (29) monolithically formed with a frame (43), attached by way of hinges (55) and gimbal portions (45). Permanent magnets (53) are attached to each of the gimbal portions (45) associated with the mirrors (29). The resulting frame (43) is then mounted to a coil driver assembly (50) so that coil drivers (34) can control the rotation of each mirror (29), under separate control from control circuitry (14, 24). The micromirror array assembly (10, 20) is thus able to support higher signal energy at larger spot sizes, and also enables multiplexed transmission and receipt, as well as sampling of the received beam for quality sensing. A method of manufacturing the micromirror array assembly (10, 20) is also disclosed, in which a support wafer (60) is temporarily bonded to the mirror wafer (70) while the permanent magnets (53) are attached.

The invention discloses a compound steering-by-wire system driven by a passenger car motor and a steering control method. In the system, a road sense motor is connected with a road sense motor deceleration mechanism and connected with a steering drive shaft provided with a torque angle sensor, a steering wheel is successively connected with the steering drive shaft, a torque rod, an upper transmission shaft and an electromagnetic clutch, in the steering executive motor deceleration mechanism, a first worm gear is installed on a steering gear shaft connected with a lower transmission shaft, andthe two ends of a first worm are both connected with a steering executive motor; and a steering pinion in a steering gear is coaxially and fixedly connected with the first worm gear, the two ends ofa rack are connected with steering wheels correspondingly, an ECU is connected with the torque angle sensor, the road sense motor, the electromagnetic clutch and the steering executive motor through signals. The method includes a conventional steering control method, a failure backup steering control method and a mechanical steering control method. According to the compound steering-by-wire systemdriven by the passenger car motor and the steering control method, in the case of the failure of electrical elements of the system, the steering action can be successfully completed, and the safety of the steering system is greatly improved.

The invention discloses a gyroscope remote controller of an electric scooter, which belongs to electronic remote control and in particular relates to a handheld gyroscope remote controller. A gyroscope is arranged in the handheld gyroscope remote controller to control the advancing, the retreating, the braking, the steering and the speed of the scooter. The gyroscope remote controller comprises a scooter-battery scooter body plate and the handheld gyroscope remote controller and is characterized in that the handheld remote controller is used for controlling the advancing, the retreating, the braking, the left-right steering and the speed of the scooter in an incline angle. According to the invention, movement safety coefficients are increased, and meanwhile, interest is enhanced.

The invention discloses a manhole cover lifting device with a steering mechanism. The manhole cover lifting device comprises a base, sliding rods, the steering mechanism, a wire spool and a pulling rope. According to the manhole cover lifting device, the steering mechanism is arranged, so that the steering operation can be conveniently performed on a lifting appliance, the steering is accurate, and the angle of the lifting appliance after steering can be locked, so that the T-shaped lifting appliance does not need to be manually fixed from the relaxed state to the tightening state of the pulling rope, and the operating safety is increased; by adopting the structural design of an inner disk body and an outer disk body, the sliding rods on both sides can be synchronously pulled by both endsof the pulling rope, so that a manhole cover is stably lifted; and a rotating roller and a lifting support plate are arranged, so that the whole device flexibly moves, and the operating stability canbe guaranteed.