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7301299 |
Injection molding machine and a control method of an injection molding machine
An injection molding machine has a control device which controls an input to an incorporated motor. The control device sets a setting value a setting value of the motor to be held for a...
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6989646 |
Multi-axis air/electrical control system
A system for allowing a wide selection of components to affect a desired result in the positioning business. Up to nine axes of coordinated motion are offered each of which may use a servomotor, a...
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6192285 |
Controller for work transfer system
A controller for a work transfer system, capable of performing precise positioning of feed bars during sole driving of the transfer system and simplified in structure to contribute to savings in...
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6052636 |
Apparatus and method for positioning an excavator housing
An apparatus and method for rotatably positioning a machine housing is disclosed. A pump produces pressurized fluid to a motor that responsively rotates the machine housing. A control valve...
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5652488 |
Welding electrode holder control
A robot welding device with a servo-valve controlled drive for the electrodes and an electrical control for the servo-valves with at least one transducer for actual data on the welding process and...
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5568022 |
Integrated compliance servovalve
An integrated compliance electrohydraulic servovalve system connected to a load such as a simulated living being to provide more realistic movement thereto. The system includes a pressure...
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5448148 |
Apparatus for positioning an excavator housing
A method and apparatus for positioning a housing of an excavator housing. A motor receives pressurized fluid to cause rotation of the excavator housing. A motor position sensor determines the...
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5418438 |
Draft inducer air flow control
A control circuit for a motor driving a fan for inducing a draft in the exhaust of a heating, ventilating and air conditioning (HVAC) system. The control circuit may be used in conjunction with...
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5415528 |
Solution pumping for maximizing output while minimizing uneven pumping pressures
A solution pumping system is disclosed which is embodied as a disposable pump cassette including a self-contained positive displacement pump, and an associated pump driver including a reciprocable...
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5196773 |
Controller for rivetting machine
A rivetting machine has a hydraulic cylinder connected with a hydraulic power source, the cylinder including a piston shaft, a motor-driven spindle extending through and journaled to the piston...
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5055758 |
Smart fuel pump controller
The motor drive circuit has an instrumentation amplifier with a programmable gain set by selectively blowing fuses during initial circuit calibration. The quasi-sawtooth waveform of a relaxation...
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4902952 |
Cooling apparatus
A Stirling cycle cooling engine with separate linear motor drives for the compressor and displacer, the drives being powered by a common oscillator via respective look up table/digital to analog...
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4879501 |
Constant speed hydrostatic drive system
A constant speed hydrostatic drive system is disclosed wherein a generator drive shaft is maintained at a constant speed by utilizing an electro-hydraulic controlled displacement pump responsive to...
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4855659 |
Electropneumatic position regulator
An electropneumatic position regulator having a current/pressure transducer has, as electric input, at least one coil (11) fed with a current (setting signal), as well as a permanent magnet (16)...
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4813339 |
Pulse-width-modulation control of parallel three-way valves to supply single-acting quick-response actuator
Parallel, pulse-width-modulation controlled three-way valves each both supply and exhaust a pressure chamber of a fluid actuator. The phase difference of the oscillator carrier waves of the pulse...
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4733151 |
Control system for vibration testing apparatus
A load support servomechanism circuit controls the armature of a shaker apparatus. The circuit includes a position sensor, peak detectors connected to outputs of the position sensor, an A/D...
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4728869 |
Pulsewidth modulated pressure control system for chemical vapor deposition apparatus
A low pressure control system for chemical vapor deposition (CVD) apparatus, including a vacuum pressure chamber and an exhaust pump, is provided by a vacuum pump DC motor which is supplied power...
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4622503 |
Variable pneumatic output means for use with ophthalmic micro-surgical instruments
A variable pneumatic output device for use with ophthmalic micro-surgical instruments including a reversible servo motor which operates in response to instructions from an electronic control...
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4583029 |
Variable speed resistive network for a pneumatic servo assembly of an electro-pneumatic converter
A resistive network is used for an electro-pneumatic converter so that the speed of the electro-pneumatic converter can be regulated. The converter includes a reversible DC servo motor having a...
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4459526 |
Multi apertured lens shock wave probe
There is disclosed a system for guiding, positioning, and measuring through robot control, a tool and a work zone relative to each other, by a noncontacting probe of at least one transceiver for...
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4326155 |
Shockwave probe
Probe method and means are disclosed for guiding and positioning a robot-actuated tool, such as a gripper or a welding head, through at least one transceiver for generating and sensing focused...
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4305028 |
System for evaluating the capability of a work-performing robot to reproduce a programmed series of motions
A system for evaluating whether a work-performing robot can perform a series of programmed motions is disclosed which includes means for continuously comparing the velocity of the various links of...
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4284943 |
Apparatus and method for controlling the speed of an induction motor in a closed-loop system
A method and control apparatus are disclosed for maintaining a measured parameter of an environment in a closed-loop system within a range of the desired level for that parameter, to an accuracy...
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4256998 |
Electrical control arrangement
An electrical control arrangement which includes firstly an electronic transducer, which is adapted to receive a controlled stream of fluid, and secondly control means to be controlled by the...
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3969662 |
Measuring the angular position of a shaft
A system for measuring the rotation of a shaft without direct mechanical connection to it uses a digital system to maintain a second shaft that connects to a cylindrical chart recorder in a...
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3833860 |
AMPLIFIER SYSTEM HAVING PSEUDO SUMMING JUNCTION
A summing amplifier system having a pseudo summing junction in a feedback network for biasing the output of the system by a DC voltage while simultaneously applying a second voltage to a...
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3832618 |
ELECTRONIC DIFFERENTIAL PRESSURE TRANSMITTER
An electronic differential pressure transmitter for use with industrial processes to produce an output signal suitable for transmission to a remote station for operating, indicating, recording or...
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3829751 |
APPARATUS FOR CONTROLLING VARIATION IN A CHARACTERISTIC OF STRAND-LIKE MATERIAL
Apparatus for controlling variation in a characteristic such as denier or sliver weight of strand-like material. The apparatus includes means for fluidically monitoring the characteristic of the...
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3660745 |
DEVICE FOR ADJUSTING THE MEASUREMENT RANGE OF CAPTORS FITTED WITH FORCE BALANCES PARTICULARLY FOR PRESSURE CONVEYORS
The device comprises a force balance including several windings, switches being provided for selective connection of any of the windings in the circuit of the force balance to compensate for...
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3579068 |
SERVO CONTROLLED HEIGHT CONTROL
A height control unit for maintaining the desired distance between a tool and a substantially flat workpiece on which the tool is working. The control system utilizes fluidic circuitry to measure...
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3512063 |
POSITION SERVOMECHANISM INCLUDING A UNIQUE RESOLVER NETWORK
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3444735 |
FLUID PRESSURE SENSING MECHANISM OPERATIVELY ARRANGED TO COMPENSATE FOR CHANGING ENVIRONMENTAL CONDITIONS
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3375771 |
Cabin pressurization actuator control system
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3259823 |
Pressure responsive apparatus
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3247717 |
Air data pressure transducer apparatus
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3188551 |
Pressure responsive electric control system employing an ion drag pump
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3100858 |
Pressure rebalancing and measuring servosystem
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3058043 |
Electrical controller for fuel ratio control system
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3045492 |
Pressure ratio measurement means
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3028534 |
Variably damped servo-control system
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3015768 |
Positioning motor control system
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3005135 |
Servomotor control systems employing transducers
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2945999 |
Generator electronic regulating device with dual reference voltage
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2931965 |
Altitude control servosystem including pressure sensor booster
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2910868 |
Depth measuring system
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2869367 |
Force-ratio-responsive system
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2863287 |
Vacuum control system
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2851644 |
Servo control system for aircraft control surfaces
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2793341 |
Altitude control devices
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