184 results about "Usual control" patented technology

The system of the present invention provides energy saving control for a water heater via an intelligent thermostat. This intelligent thermostat provides programmatic control over the HVAC system as is conventional, and provides coordinated control over the water heater temperature set point. This control over the water heater is accomplished via a communications network between the intelligent thermostat and the water heater. In one embodiment the communications are wireless, although wired and network bus communications may also be utilized. Enhanced and coordinated control is also provided so that different operational temperature cycles can be provided to coordinate with the intelligent thermostat's programmatic control of the HVAC system. Separate programmatic control of the water heater is also provided whereby different operational temperature modes may be commanded, e.g. Wake, Sleep, and Demand modes of operation.

A particulate matter (PM) detection sensor is placed in an exhaust gas pipe of a diesel engine. The PM sensor element has a detection part composed of a pair of detection electrodes and a heater part. The detection electrodes and the heater part are stacked in the PM sensor element. A control circuit instructs a heater power supply to supply electric power to the heater part when the diesel engine is started to operate. The heater part heats the detection part at a predetermined temperature T1 within a range of 600° C. to 900° C. for a predetermined period S1 of time, for example, 650° C. for 20 seconds, in order to burn and completely eliminate particulate matter accumulated in the detection part. This control process avoids incorrect detection of the PM detection sensor. After this process, the control circuit executes usual control of the PM detection sensor.

Micro-electro-mechanical (MEM) translational tabs are introduced for enhancing and controlling aerodynamic loading of lifting surfaces. These microtabs are mounted at or near the trailing edge of lifting surfaces, deploy approximately normal to the surface, and have a maximum deployment height on the order of the boundary layer thickness. Deployment of this type of device effectively changes the camber, thereby affecting the lift generated by the surface. The effect of these microtabs on lift is as powerful as conventional control surfaces such as ailerons. Application of this simple yet innovative lift enhancement and control device will permit the elimination of some of the bulky conventional high-lift and control systems and result in an overall reduction in system weight, complexity and cost.

The present invention relates to a catheter for ventilating a patient, with a ventilation channel for alternately delivering and removing air and/or oxygen to and from the patient's airways, the catheter having a maximum external diameter of at most 6 mm, mm, and the ventilation channel having an open end, and a connector end for connection to a gas flow reversing element. According to the invention, the catheter is provided with means or elements for measuring the pressure outside the ventilation channel near the open end. The catheter preferably has a pressure measurement channel, with an open measurement end near the open end of the ventilation channel, and a measurement connector piece for connecting a pressure display device. Of particular advantage is a catheter with an expansion body (cuff) that is fluidically connected to a supply channel through which the expansion body can be increased or reduced in size by means of a fluid. The jet ventilation catheter according to the invention permits a novel ventilation principle that can be regarded as a bridge between classical jet ventilation and conventional controlled ventilation and that opens up possibilities for new and improved interventions in the airways.

A hybrid cascade Model-Based Predictive control (MBPC) and conventional control system for thermal processing equipment of semiconductor substrates, and more in particular for vertical thermal reactors is described. In one embodiment, the conventional control system is based on a PID controller. In one embodiment, the MBPC algorithm is based on both multiple linear dynamic mathematical models and non-linear static mathematical models, which are derived from the closed-loop modeling control data by using the closed-loop identification method. In order to achieve effective dynamic linear models, the desired temperature control range is divided into several temperature sub-ranges. For each temperature sub-range, and for each heating zone, a corresponding dynamic model is identified. During temperature ramp up/down, the control system is provided with a fuzzy control logic and inference engine that switches the dynamic models automatically according to the actual temperature. When a thermocouple (TC) temperature measurement is in failure, a software soft sensor based on dynamic model computing is used to replace the real TC sampling in its place as a control system input. Consequently, when a TC failure occurs during a process, the process can be completed without the loss of the semiconductor substrate(s) being processed.

The invention discloses an aerial turbofan engine control method based on a surge margin estimation model. The modeling of the provided surge margin estimation model is divided into two parts, namely an undistorted model during conventional flight and a loss model during super-maneuver flight, wherein the undistorted model is realized by screening the optimal model input and modeling through a nonlinear fitting method based on a surge margin feature selection algorithm; the loss model is realized by estimating the aircraft engine inlet distortion degree based on an online attack angle prediction model and calculating to obtain the surge margin loss during distortion. The stability of an engine is predicted in real time by utilizing the estimation model, a turbine fall ratio control instruction is subjected to margin loss compensation on the basis that a conventional control loop of the engine is not changed, and high-stability control is realized. The aircraft engine can be guaranteed to work stably and efficiently, and the surge margin of the aircraft engine is controlled to be 11-13 percent.

The invention relates to an online adjustment method for a PI (proportion integrate) parameter of an asynchronous motor, the method comprises the following steps of formulating a control rule table for changing values of parameters P and I according to certain principle; judging a current operation state of the motor according to an operating speed of the motor; adopting a conventional PI control when the motor operates at a stable speed; when the motor operates at an accelerating speed or a reducing speed, adopting a fuzzy PI control to carry out an online self-adjustment for the PI parameter until the motor operates in a stable state, the self-adjustment comprises that according to a distribution scope of a rotation speed deviation value e and the value of a changing rate ec of the rotation speed deviation, a domain and scale coefficients Ke and Kec of e and ec are defined to obtain a novel control rule table; setting an initial value for the PI parameter; and carrying out the online self-adjustment for the PI parameter. By the adoption of a fuzzy self-adaptive PI control method, the PI parameter is adjusted to enable the current PI parameter to always meet the requirement of current working condition, the reaction time can be accelerated by utilizing the method to adjust the PI parameter, and dynamic performance of the motor is improved.

The invention belongs to the field of electric system control, and particularly relates to a voltage/reactive power comprehensive intelligent control method for a wind farm. In the method, a knowledge base and a fuzzy control table are formed by adopting intelligent technology based on a neural network and fuzzy control and combining a certain experience and knowledge of an electric power system, namely a control chart of the ninth region, without accurate mathematical models, so that the comprehensive control of voltage reactive power of the wind farm is realized. Therefore frequent action caused by voltage fluctuation is reduced, the comprehensive reactive power voltage control over the wind farm is realized, the ideal control effect which the conventional control method is difficult to achieve is achieved, and the control ability on the quality of electric energy is improved greatly.

The invention provides a control device for a continuously variable transmission, the continuously variable transmission and vehicles with the same, and avoids reduction of driving comfort caused by idling of a primary belt wheel relative to a belt during acceleration. The transmission (20) comprises an input shaft (12), an output shaft (13), the primary belt wheel (23) rotating along with the input shaft (12), and the belt (25) wound around the primary belt wheel (23) and a secondary belt wheel (24). The transmission (20) comprises an electric motor (22) through driving a movable belt wheel (23a) of the primary belt wheel (23) to change variation ratio. The control device (ECU5) of the transmission (20) comprises a rotary secondary belt wheel rotating speed sensor (28) of a detection tape (25), and a control part (55) of the ECU (5) controls the position of the belt wheel after being started to detect out the rotation of the tape (25), namely, normal control of the variation ratio.

A compressible electrode for the stimulation of the musculature of the pelvic floor complex e.g. for the treatment of anterior and posterior pelvic floor muscle dysfunction, is reversibly compressible and has electro-conductive elements. The compressible electrode may be used with all the usual control units and treatment regimes for the electro-stimulation of the musculature and nerves of the vagina and/or anus. The compressible electrode may be inserted into the vagina or anus through the use of an applicator. In the compressed state the compressible electrode may be of tampon proportions and after use may easily be removed.

The present invention discloses an ultrasonic motor control method based on the algorithm of immunity grain subgroup. The present invention provides an ultrasonic motor controller based on the algorithm of immunity grain subgroup on the basis of the receptor editing mechanism and vaccine inoculation model in the T and B cells of the immunity system. A common controller or a controller based on intelligent technology is established firstly, primary parameters are provided to the controller randomly to from primary particles; an optimization algorithm of particle group is applied to update; the evolvement of the structure of the controller is realized through increasing the operations of structure upgrowth and retrogression in the evolvement of particles; unlively cell receptors are differentiated and are performed receptor editing every certain algebra value; the optimized control result found by the particle group algorithm is output when a predetermined iterative precision is achieved. In the present invention that combining the advanced intelligent technology, a real time control is realized basically, and the control precision is improved, and the computing complexity is reduced. As a result, the full-automatic design of the controller is realized.

The invention discloses a vehicle anti-skid brake system (ABS) control method suitable for various road conditions, and relates to the technical field of automobile electronic control. In the method, the ABS control process is divided into a primary control cycle and a conventional control cycle; during the primary control cycle, road surfaces are identified through wheel speed difference; and during the conventional control cycle, the road surfaces are identified through a wheel speed peak slope, a wheel speed reduced value in a depressurization section, and pressurization frequency. For a bisectional road, two front wheels are under corrected low selector control and two back wheels are independently controlled by a control strategy for a corresponding road surface according to the identified road surface; and for a single high adhesion or low adhesion road surface, the front wheels are under pressurization synchronous control, and the back wheels are controlled by a method for a single road surface. The control strategy for the corresponding road surface is adopted according to vehicle adhesion road surfaces. The method can solve the problems of braking direction instability and brake distance when a vehicle brakes on various road surfaces.

The invention discloses a bridge crane error tracker with an initial load swing angle and trolley displacement and a method. According to the method, an underactuation bridge crane system initial dynamical model is established; an expected trolley error trace and an expected swing angle error trace are given; error tracking signals for trolley positioning and load swinging are determined; an underactuation bridge crane system error tracking dynamical model is obtained; a target system model enabling a Lyapunov function to be stable is established, and the bridge crane error tracker with the initial load swing angle and trolley displacement is obtained according to the target system model and the underactuation bridge crane system error tracking dynamical model. The bridge crane error tracker has the advantages that under the condition that the initial load swing angle and initial trolley displacement which are zero in a conventional control method are expanded, the initial swing angle of a load and the initial displacement of a trolley are allowed to be of any values.

The invention relates to a control circuit module using DSP as core and several intelligent control algorithms. The hardware includes DSP processing unit, CPLD, FLASH memory, AD converter, DA converter, FIFO memory, and CAN bus communication module. It has high efficiency and strong processing ability. The controller also has plural control algorithms to realize real time controlling. It is convenient to expand the control algorithms to realize different control target. It has the advantages of high integration, variable control method, good university, low power consumption, etc.

The invention relates to a flexible control device and method for reactive compensation of a distribution station area. The control device is composed of an operation control link that exchanges data by a high speed SPI bus and a communication and man-machine interaction link; and the control method provided by the invention comprises the steps of collecting a three-phase instantaneous voltage value and a current value of a distribution station area system to calculate and obtain active power, reactive power, a power factor and current unbalance degree, selecting a corresponding compensation control strategy according to the size of the current unbalance degree, converting a network combination structure of an existing active compensator capacitor bank to realize single reactive compensation or simultaneous reactive and three-phase load unbalance comprehensive compensation of the distribution station area. By adopting the flexible control device and method provided by the invention, the existing compensation network elements can be fully used, ''hardness is replaced by flexibility'', various load working conditions are applicable, the flexibility is good, the cost performance is good, and the single function defects of a conventional control device and method that only reactive compensation can be realized and that the three-phase load unbalance cannot be compensated.

The invention discloses a wind generating set variable rate feathering halt method based on accelerated velocity of an engine room. On the basis of a conventional control strategy, a variable rate feathering module based on the former accelerated velocity and the current accelerated velocity of the engine room is added. The method comprises the steps that when the set enters the halt logic, firstly, whether the fault type triggered by the set is software hypervelocity halt alarm or not is judged; If no, the corresponding halt logic action is taken, and if yes, the variable rate feathering haltlogic based on the accelerated velocity of the engine room is adopted; the former accelerated velocity and the current accelerated velocity of the engine room are measured in real time through a sensor; after filtering is conducted through a filter, a feathering rate value is output to be superposed with an original feathering rate value output by a controller; and then, amplitude limiting is conducted, and a final feathering rate value is multiplied by the cycling time of the controller, so that a final pitch angle given value is obtained and transmitted to a variable pitch system till all vane pitch angles reach the maximum pitch angle and the feathering halt action is completed. By means of the method, the load optimization control, under the special working condition, over the wind generating set can be achieved.

The present invention relates to colour generation in an indoor or outdoor lighting device, and more particularly to a control method which provides spatially consistent colour control of a lighting device designed for use in, e.g., spatially extended premises or environments containing obstacles, and thus including multiple light sensors to allow efficient control. Colour consistency is achieved by an arrangement where light of one or more of the light sources impinges on more than one light sensor. If constructional detector features, such as filter characteristics, coincide, then these sensors should in principle, after the appropriate processing, report identical colour points of the light source under consideration. Indeed, colour is a path-independent property of light, and this is the basis for a mutual calibration scheme of the detectors according to the invention. The calibration scheme is part of a control algorithm and is intended for use in place of a conventional control algorithm, either intermittently or permanently.

The invention relates to an IC card real time electricity-charge deducting control system of an air conditioner, which comprises an IC card management module, an IC card, an IC card controller and an air-conditioner controller which are connected sequentially. The air-conditioner controller comprises an air-conditioner master control singlechip, an electric quantity detection unit, a first communication interface and an air-conditioner routine control unit, wherein, the electric quantity detection unit, the first communication interface and the air-conditioner routine control unit are connected with the air-conditioner master control singlechip respectively; the IC card controller comprises a second communication interface, an electricity-charge deducting control singlechip, a first IC card read-write interface and a first IC card read-write device which are connected sequentially. The IC card real time electricity-charge deducting control system controls the air-conditioner electricity-charge consumption through the IC card real time charging and deducting way, realizes the intelligentized multi-user power utilization, and has the characteristics of intelligentization and easy realization.

A level shifting circuit, satisfying a requirement of a high tolerated dV/dt level, and a highly reliable inverter circuit, wherein a set pulse signal and a reset pulse signal, both of which are level-shifted to a potential side taking as reference a reference potential of a gate control terminal of a switching terminal, are obtained differentially and integrated, and, in case these pulse signals equal or exceed stipulated integrated values, are transmitted as regular control signals controlling the on/off state.

A control method for the temp system with big lag is disclosed. As its input signal and output signal are switch values and its controlled output signal varies with the state of input temp signal and the regulation times, its control effect is very ideal. Its apparatus is composed of burner, controller, temp sensor and executor. It is suitable for the control to heating furnace of oil field.

The invention relates to a method for measuring rotary and differential speed without a velocity metre, which is characterized in that signals collected by sensors on a rotary drum and a rotor are directly input into a Rockwell MicroLogix1500 PLC processor provided with high-speed counters and then are output into a touch display screen by the PLC processor provided with the two high-speed counters of HSC0 and HSC1; and an impulse method is used for measuring the rotary speed of a high-speed section, and a periodic method is used for measuring the rotary speed of a low-speed section. As the PLC processor provided with the high-speed counters replaces the velocity metre and has the function of speed measurement of the velocity metre, the PLC processor is in charge of the routine control of a system, the potentiality of the PLC processor is fully tapped, and the PLC processor also has the function of speed measurement. The strong programming instruction, the timer interruption call function and the high programming flexibility of PLC are utilized, the impulse method which controls the high-speed section and the periodic method which controls the low-speed section are respectively used for measuring the speed, and the high-speed and the low-speed sections can have favorable accuracy of speed measurement and stability.

The invention provides an improved controller (10) for a games console. The invention is a games controller (10) that is intended to be held by a user in both hands in the same manner as a conventional controller (1). Additionally, the controller of the invention (10) may comprise the same controls (2, 3, 4, 5, 6, 7, 8, 9) as a conventional controller (1). The controller of the present invention (10) is advantageous as it additionally comprises four additional controls (11A, 11B, 11C, 11D) located on the rear of the controller (10) in a position to be operated by the middle fingers of a user (12). The additional controllers (11A, 11B, 11C, 11D) may be paddle levers and may replicate the functions of one or more of the controls (2, 3, 4, 5, 6, 7, 8, 9) located on the front or top of the controller (10).