31 results about "Force dynamics" patented technology

A method for providing independent static and dynamic models in a prediction, control and optimization environment utilizes an independent static model (20) and an independent dynamic model (22). The static model (20) is a rigorous predictive model that is trained over a wide range of data, whereas the dynamic model (22) is trained over a narrow range of data. The gain K of the static model (20) is utilized to scale the gain k of the dynamic model (22). The forced dynamic portion of the model (22) referred to as the bi variables are scaled by the ratio of the gains K and k. The bi have a direct effect on the gain of a dynamic model (22). This is facilitated by a coefficient modification block (40). Thereafter, the difference between the new value input to the static model (20) and the prior steady-state value is utilized as an input to the dynamic model (22). The predicted dynamic output is then summed with the previous steady-state value to provide a predicted value Y. Additionally, the path that is traversed between steady-state value changes.

A rotary vane magnetorheological energy absorber, which enables a longer stroke capability in a more compact configuration than conventional magnetorheological devices, is disclosed. This novel device design is attractive for applications where long stroking capability, high force dynamic range, device size, and device weight are important. The improved magnetorheological energy absorber comprises an internal or external flow valve and a hollow body enclosing fixed and rotary vanes as well as magnetorheological fluid. Fluid flow in the valve is restricted as a solenoid is activated, thus adjusting the capability of the device to react torque. Various flow valve configurations are disclosed, as well as various motion translation mechanisms for translating linear motion to rotary motion for use of the rotary vane magnetorheological energy absorber. The improved design minimizes the amount of magnetorheological fluid required as compared to conventional linear stroke energy absorbers, thus minimizing device weight.

A hot rolling bandprofil pluralism intersect control method is suitable for controlling the shape of strip in the hot rolling band steel production line. The purpose is to improve the potential shapeof the hot rolling band steel and increase the product quality; the method aims at the hot rolling band steel production line of a fining mill set which is provided with seven rolling mills (F1-F7), firstly, the rolling loading and the bowed roll force dynamic control are adjusted; the thermal state target alignment controlling value is modified; micro-waves are used for rolling; the alignment target reference value is 0 I-unit; the target alignment -5 I-unit- -10 I-unit is taken; laminated cooling CTC adopts aftercooling mode; the heat stress of the band steel generated in a run out table ROTis reduced; the reeling target temperature CT is mended within 600 DEG C-650 DEG C; the working roll of the sixth rolling mill (F6) of the fining mill set shifts rolls for compensation; the use of cooling water among the rolling mills is optimized.

The invention discloses a double-clutch type automatic transmission fork shifting gear engaging force dynamic self-adapting method. The fork shifting is divided into a plurality of stages during the gear shifting process. The double-clutch type automatic transmission fork shifting gear engaging force dynamic self-adapting method comprises the following steps of (1) obtaining ranges of a maximum value and a minimum value of a preset shifting fork movement speed at different stages during fork shifting gear engaging; (2) computing a shifting fork real-time movement speed and confirming a maximum value and a minimum value of the shifting fork movement speed at the different stages during the fork shifting gear engaging; (3) comparing the maximum value and the minimum value of the shifting fork movement speed with the range of the maximum value and the minimum value of the preset shifting fork movement speed at the same stage, obtaining the fork shifting gear engaging force to be adjusted and the stage and recording and adjusting the fork shifting gear engaging force when the shifting fork gear shifting achieves a corresponding stage. The double-clutch type automatic transmission fork shifting gear engaging force dynamic self-adapting method is applied to control of a double-clutch automatic transmission and achieves vehicle gear shifting noise optimization.

The invention provides a crankshaft connecting rod neck follow-up grinding force dynamic measurement method and device. The crankshaft connecting rod neck follow-up grinding force dynamic measurement device comprises a crankshaft, a sand wheel, a rotary measuring cell and a measuring unit, wherein a main shaft neck of one end of the crankshaft is connected with a sand wheel head frame, and a main shaft neck of the other end of the crankshaft is connected with a sand wheel tail frame; the sand wheel makes contact with a crankshaft connecting rod neck of the crankshaft; the rotary measuring cell is arranged on one of the main shaft necks of the crankshaft; and the measuring unit is connected with the rotary measuring cell. The crankshaft connecting rod neck follow-up grinding force dynamic measurement method and device have the following beneficial effects that the dynamic change of grinding force in the crankshaft connecting rod neck planetary motion process is converted into grinding force applied to the main shaft necks by building a mathematical model of grinding force in the crankshaft connecting rod neck follow-up grinding process, the grinding force is collected through a series of measuring equipment, and finally the crankshaft follow-up grinding force dynamic measurement method is formed; spatial position dynamic, continuous and precise measuring can be conducted on normal and tangential components of the grinding force at a grinding point of the connecting rod neck; and the method is suitable for engineering practice and solving the dynamic measuring problem of the crankshaft follow-up grinding force.

The invention relates to a strong wind attraction force dynamic inhibition device of a roof of a short building. The inhibition device is used for reducing strong wind load induced by vortex of the roof of a short building. The inhibition device comprises a streamline type spoiler plate assembly, a wind speed device, a servo controller, a driving motor and an external power supply. The streamline type spoiler assembly is fixedly connected with the roof via a spoiler plate support and is in transmission connection with the spoiler plate support. The wind speed device is used for measuring wind speed in real time. The servo controller is connected with the wind speed device and used for sending out control instructions according to real-time wind speed. The driving motor is connected with the servo controller and the spoiler plate support and changes the included angle between streamline type spoiler plate assembly and the horizontal plane according to the control instructions, thereby achieving strong wind attraction force dynamic inhibition. The external power supply is connected with the wind speed device and the driving the motor so as to provide electricity. Compared with the prior art, the inhibition device is advantaged by effective reduction of strong wind load induced by vortex of the roof of a short building, simple structure, remarkable effects, stable performance and reduction of construction cost.

The invention provides a forced dynamic derivative balance dynamic corrector comprising a pedestal; two arc coils; an installing sleeve and an installing platform, wherein the two ends of the installing sleeve are installed on the two arc coils through the installing platform; and multiple magnetic field generators which are arranged on the pedestal, wherein the arc coils are arranged in the Lorentz force effect channel formed by the magnetic field generators in a floating way. In working of the dynamic corrector, the arc coils are electrified and then move in the strong magnetic field formedby the magnetic field generators to generate the Lorentz force, and the force changes along with the change of the moving speed and direction of the movement calibration frame so as to form alternating dynamic load and thus dynamic calibration of the balance can be realized.