摘要:
An external force judgment method including a reference value acquisition step of acquiring a reference value of a relative position or angle of a second member with respect to a first member when a robot on which no external force is acting or on which a known external force is acting is assumed to be operated by a predetermined command in advance; a measured value acquisition step of acquiring a measured value of a relative position or angle of the second member with respect to the first member when the robot is operated by the predetermined command; and a judgment step of judging the presence or absence of an external force acting on the robot based on a difference between the reference value and the measured value and a predetermined threshold value.
摘要:
A method for determining an actuating-travel range between two shift-element halves of a form-locking shift element (A, F) during an engagement of the shift element (A, F) and in the presence of a tooth-on-tooth position between the two shift-element halves is provided. An actuating movement of the at least one movable shift-element half with respect to the other shift-element half is monitored by a sensor. A tooth-on-tooth position is detected when it is determined, by the sensor, within an actuating-travel range of the at least one movable shift-element half between a disengaged condition and an engaged condition of the shift element, that the actuating movement of the movable shift-element half in the engagement direction is zero. A ratio between an engagement force applied at the shift element and a radial force acting on the shift-element halves is within a value range, which facilitates a tooth-on-tooth position and an actuating movement of the shift-element half in the engagement direction is detected by the sensor after the reduction of the engagement force and/or after an increase of the applied torque.
摘要:
Systems and methods are disclosed for automatically detecting better lift and using the lift to stay aloft longer, provide recommendation to the aerial vehicle's pilot or fully controlling the flight of the aerial vehicle. The disclosed techniques pertain to aerial vehicles such as airplanes or model airplanes, gliders or model gliders, sailplanes or model sailplanes, hang-gliders, paragliders, speedflying, parafoils etc. The invention uses sensors located on the aerial vehicle to gauge air lift (updraft, thermal, ridge lift etc.) to extend the time the aerial vehicle may be kept aloft. The data flowing from the sensors is fed into a computer, that may provide recommendations to the pilot or to the autopilot (Computer) of the best path to take, to find better lift and to stay aloft.
摘要:
A FORCE VECTOR PRESSURE RATIO SENSOR HAS A CARRIAGE ADAPTED TO PIVOT ABOUT A FIRST AXIS AND HAS A PULLEY ROTATABLY MOUNTED ON THE CARRIAGE. A SECOND PULLEY IS CONNECTED TO THE FIRST PULLEY BY A NON-SLIP BELT AND HAS A MOVABLE AXIS NORMALLY COINCIDENT WITH THE FIRST AXIS. A CHANGE OF PRESSURE RATIO CAUSES THE SECOND PULLEY TO BE DISPLACED ABOUT THE FIRST PULLEY AND A PAIR OF SENSORS DETECT THE DISPLACEMENT AND PROVIDE SIGNALS CORRESPONDING THERETO. A SERVO IS RESPONSIVE TO THE SENSOR SIGNALS FOR CAUSING THE CARRIAGE TO PIVOT ABOUT THE FIRST AXIS UNTIL THE AXIS OF THE SECOND PULLEY IS COINCIDENT WITH THE FIRST AXIS AND THE ANGULAR POSITION OF THE CARRIAGE CORRESPONDS TO THE PRESSURE RATIO. FRICTION FREE DISPLACEMENT OF THE SECOND PULLEY IS PROVIDED BY EXTENSIVE USE OF FLEX PIVOTS IN COMBINATION WITH THE BELT AND PULLEY ARRANGEMENT. A LINKAGE ASSEMBLY PROGRAMS THE ROTATION OF THE FIRST PULLEY RELATIVE TO THE CARRIAGE THEREBY ELIMINATING ANY ERRORS IN THE CARRIAGE POSITION CAUSED BY FRICTION BETWEEN THE FIRST PULLEY AND THE CARRIAGE. THE ANGULAR POSITION OF THE CARRIAGE, WHICH IS FREE OF FRICTIONAL ERRORS, CORRESPONDS TO THE RATIO OF THE PRESSURES.
摘要:
The described technology provides a force sensor apparatus. An elastic pad may be disposed between two force sensors with a force applicator extending at least partially into the elastic pad. When a force is applied to a force applicator, the force applicator transmits the force to one or both of the force sensors via the elastic pad. In an implementation, the force sensors may be resistive sensors. Since resistive sensors may experience thermal drift due to changes in environmental temperature conditions, the differential resistance between the two resistive sensors allows a temperature-independent measurement of the applied force.
摘要:
A turbine design method that can easily construct a turbine stage structure in which an unsteady force acting on a rotor blade can be reduced and degradation in performance and increase in rotor shaft length can be prevented is provided. Unsteady forces and exciting forces by the potential field interaction acting on the rotor blade are respectively obtained, exciting forces by the wake interaction acting on the rotor blade are obtained, the exciting forces by the potential field interaction and the wake interaction are mathematically expressed, the unsteady force acting on the rotor blade when the distance between stator and rotor blades is an arbitrary value is calculated, and the distance between stator and rotor blades is determined based on a calculation result.
摘要:
A calibration method of determining and compensating differences of measuring forces in different coordinate directions in a measuring scanning system for use in a numerically controlled multi-coordinate measuring machine, which method includes the steps of inputting parameters of the scanning system and of a calibration gauge into a control unit of the multi-coordinate measuring machine, scanning calibrating surfaces of the calibrating gauge with the scanning system, with a scanning displacement being effected in a direction defined by two coordinate directions, superimposing on the initial scanning displacement another scanning displacement, which deviates from the initial displacement, and determining deviation displacement paths of the scanning system for determining differences of the measuring force in different coordinate directions and respective correction coefficients, which are inputted into the control unit of the coordinate measuring machine.
摘要:
A device of the gas-bubbling type for determining the level of a body of liuqid comprises a dual-diaphragm, multiplying lever arrangement whereby the pressure necessary to effect bubbling is multiplied or amplified to a higher pressure which can be read directly as hydrostatic head and/or used to operate a control switch. The sensor comprises two chambers, one at a low and the other at a high pressure. Each chamber has like diaphragms exposed to ambient pressure and connected by a lever mechanism whereby the movement of the low pressure diaphragm causes an opposite and greater movement of the high pressure diaphragm. The low pressure chamber receives the pressure necessary to effect bubbling through a conduit placed in the body of the liquid, the level of which is to be measured. The high pressure chamber receives instrument air (or other control gas) through a regulating valve operated by the high pressure diaphragm, and a small amount of air is continuously passed from the high pressure chamber through a throttling or needle valve into the low pressure chamber, and thence to the bubbler conduit in the liquid. Because the control pressure is taken from the high pressure side of the sensor, a regular commercially available pressureoperated switch can be used with good results. Springs are not required to load the diaphgram. Instead, the sensor operates by mechanically balancing two pressures without the aid of springs, making it very sensitive and accurate, and the diaphragms can withstand over pressures without rupturing.