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1. 发明授权

US06682669B2 Model predictive control apparatus and methods for motion and/or pressure control of injection molding machines 失效
标题翻译：注射成型机的运动和/或压力控制的模型预测控制装置和方法
公开(公告)号：US06682669B2
公开(公告)日：2004-01-27
申请号：US09967731
申请日：2001-09-29
申请人： Thomas C. Bulgrin , Andrew Schuplin
发明人： Thomas C. Bulgrin , Andrew Schuplin
IPC分类号： B29C4576
CPC分类号： B29C45/766 , B29C45/76 , B29C2043/5808 , B29C2945/76033 , B29C2945/76525
摘要： Methods and apparatus are disclosed for controlling an injection molding machine, wherein a control law estimates future machine states according to a proposed control output vector, the current machine state and a model of the machine, and recursively refines the control output vector using an error function and an adjustment rule in order to reduce the error between the estimated future machine states and desired future machine states. One or more control outputs are provided to actuators associated with the machine according to the refined control output vector.
摘要翻译：公开了用于控制注射成型机的方法和装置，其中控制规则根据提出的控制输出向量，当前机器状态和机器的型号来估计未来的机器状态，并且使用误差函数递归地精化控制输出矢量以及调整规则，以便减少估计的未来机器状态与期望的未来机器状态之间的误差。根据精细的控制输出向量，将一个或多个控制输出提供给与机器相关联的致动器。

2. 发明授权

US07031800B2 OO control for injection molding machine 失效
公开(公告)号：US07031800B2
公开(公告)日：2006-04-18
申请号：US10254245
申请日：2002-09-25
申请人： Thomas C. Bulgrin
发明人： Thomas C. Bulgrin
IPC分类号： G05B19/04
CPC分类号： B29C45/766 , B29C45/76 , B29C2945/76006 , B29C2945/76083 , B29C2945/7612 , B29C2945/76187 , B29C2945/76224 , B29C2945/76307 , B29C2945/76498 , B29C2945/76531 , B29C2945/76595 , B29C2945/76692 , B29C2945/76702 , B29C2945/76866 , B29C2945/76872 , B29C2945/76933 , G05B2219/34246 , G05B2219/45244
摘要： A plastic injection molding machine has an object oriented programmed routine to control the molding cycle of the machine. The programmed routine implements the inter-related molding cycle of clamp, inject, hold, eject and recover by development of classes corresponding to machine structure performing basic molding cycle steps. The basic classes use object oriented concepts of data encapsulation, inheritance, polymorphism, abstraction and the like that are linked together to produce objects during run time. The classes in turn include controller, observer and actuators classes. The controller class functions as a state machine. The observer class functions to determine the current state and the actuator class produces command signals controlling class related machine hardware. A modeling system is also disclosed for constructing the OO programmed routine for any injection molding machine using existing classes, principally by difference.

3. 发明授权

US6089849A Hybrid injection molding machine 失效
标题翻译：混合注塑机
公开(公告)号：US6089849A
公开(公告)日：2000-07-18
申请号：US32090
申请日：1998-02-27
申请人： Thomas C. Bulgrin , Thomas H. Richards , George L. Eterovich
发明人： Thomas C. Bulgrin , Thomas H. Richards , George L. Eterovich
IPC分类号： B29C45/76 , B29C45/82 , B29C45/77
CPC分类号： B29C45/76 , B29C45/82 , B29C2045/1792 , B29C2945/76006 , B29C2945/76113 , B29C2945/7612 , B29C2945/7617 , B29C2945/76187 , B29C2945/76214 , B29C2945/7623 , B29C2945/76307 , B29C2945/76598 , B29C2945/76605 , B29C2945/76648 , B29C2945/76692 , B29C2945/76709 , B29C2945/76943
摘要： An energy efficient general purpose injection molding employs a hydraulic drive for injection and clamp machine functions and an electric drive for screw recovery. Both drives use AC "squirrel cage" induction motors under vector control. Speed command signals for the vector controls are generated by the machine's controller utilizing state transition and predictive signal techniques to account for motor and motor/pump response latencies. Hydraulic drive efficiency is improved by varying motor speed/pump output to match cycle requirements to retain hydraulic drive advantages for mold clamp and injection functions while improving the electric drive performance for screw recovery.
摘要翻译：一种高能效的通用注射成型采用液压驱动装置，用于注射和夹紧机械功能以及用于螺杆回收的电动驱动装置。两个驱动器都采用矢量控制下的“鼠笼式”感应电动机。用于矢量控制的速度指令信号由机器的控制器利用状态转换和预测信号技术产生，以解释电动机和电动机/泵的响应延迟。通过改变电机速度/泵输出来提高液压驱动效率，以符合循环要求，以保持模具夹紧和注塑功能的液压驱动优势，同时提高螺杆回收的电气驱动性能。

4. 发明授权

US06695994B2 Melt pressure observer for electric injection molding machine 失效
标题翻译：电动注塑机熔体压力观察器
公开(公告)号：US06695994B2
公开(公告)日：2004-02-24
申请号：US09968357
申请日：2001-09-29
申请人： Thomas C. Bulgrin , Michael C. Uhrain, IV
发明人： Thomas C. Bulgrin , Michael C. Uhrain, IV
IPC分类号： B29C4577
CPC分类号： B29C45/77 , B29C45/76 , B29C45/7666 , B29C2045/1792 , B29C2045/5032 , B29C2045/5036 , B29C2945/7602 , B29C2945/76033 , B29C2945/76083 , B29C2945/76113 , B29C2945/76214 , B29C2945/76381 , B29C2945/76384 , B29C2945/76498 , B29C2945/76672 , B29C2945/76735 , B29C2945/76859 , B29C2945/76862 , B29C2945/76946 , G05B2219/45244
摘要： Electric injection molding machines and systems are disclosed in which a melt pressure value is provided without pressure sensing through solving one or more state equations using measured motor performance parameters such as position or velocity, and torque or current. The pressure value may be used to control melt pressure during an injection step, or may be used for monitoring. Methods and computer-readable media are also disclosed for providing or estimating melt pressure in an injection molding machine without a melt pressure sensor.
摘要翻译：公开了电动注射成型机和系统，其中通过使用测量的电动机性能参数（例如位置或速度）以及扭矩或电流来解决一个或多个状态方程而不通过压力感测来提供熔体压力值。压力值可以用于在注射步骤期间控制熔体压力，或者可以用于监测。还公开了用于在没有熔体压力传感器的注射成型机中提供或估计熔体压力的方法和计算机可读介质。

5. 发明授权

US5997778A Auto-tuned, adaptive process controlled, injection molding machine 失效
标题翻译：自动调节，自适应过程控制，注塑机
公开(公告)号：US5997778A
公开(公告)日：1999-12-07
申请号：US65399
申请日：1998-04-23
申请人： Thomas C. Bulgrin
发明人： Thomas C. Bulgrin
IPC分类号： B29C45/77 , G05B19/416
CPC分类号： B29C45/77 , G05B19/416 , G05B2219/2624 , G05B2219/41151 , G05B2219/41303 , G05B2219/42033
摘要： An injection molding machine uses a summed, multi-term control law to control ram velocity during the injection stroke of a molding cycle to emulate a user set velocity profile. An automatic calibration method sets no load ram speeds to duplicate user set ram speeds. Finite impulse response filters produce open loop, no load control signals at advanced positions on the velocity profile to account for lag in system response. An adaptive, error term indicative of load disturbance, observed from a preceding cycle is added at the advanced travel position predicted by the finite impulse response filter to produce a predictive open loop, load compensated control signal. Finally, an auto tuned PID controller develops a real time, feedback load disturbance signal summed with the open loop control signal to produce a drive signal for the machine's proportioning valve.
摘要翻译：注射成型机使用总和的多项控制定律来控制模制循环的注射冲程期间的冲程速度，以模拟用户设定的速度分布。自动校准方法设置无负载压头速度以重复用户设置的压头速度。有限脉冲响应滤波器在速度曲线上的高级位置产生开环，空载控制信号，以解决系统响应中的滞后。在由有限脉冲响应滤波器预测的高级旅行位置处添加表示从前一周期观察到的负载扰动的自适应误差项，以产生预测开环负载补偿控制信号。最后，自动调谐PID控制器开发出与开环控制信号相加的实时反馈负载扰动信号，以产生机器配比阀的驱动信号。

6. 发明授权

US5493503A Clamp control for injection molding machine 失效
公开(公告)号：US5493503A
公开(公告)日：1996-02-20
申请号：US296658
申请日：1994-08-26
申请人： Thomas H. Richards , Thomas C. Bulgrin , Alexander M. Galan
发明人： Thomas H. Richards , Thomas C. Bulgrin , Alexander M. Galan
IPC分类号： B29C45/76 , B29C45/78
CPC分类号： B29C45/76 , B29C45/78
摘要： A control system utilizing a programmable controller for an injection molding machine in which the controller is periodically scanned in response to input signals to produce output control signals is provided with an impulse response filter arrangement. The impulse response filter senses a plurality of current and past sensor input signals to accurately predict the occurrence of a variable triggering event which will in fact be sensed by a sensor. A predictive sensor signal is then generated which is inputted to the controller in advance of the occurrence of the triggering event and at a time which corresponds to the processor scan time so that the controller generates the desired output at the precise time the triggering event occurs thus eliminating controller response latency from the control system.

7. 发明授权

US06299427B1 Hybrid injection molding machine 失效
标题翻译：混合注塑机
公开(公告)号：US06299427B1
公开(公告)日：2001-10-09
申请号：US09610068
申请日：2000-07-05
申请人： Thomas C. Bulgrin , Thomas H. Richards , George L. Eterovich
发明人： Thomas C. Bulgrin , Thomas H. Richards , George L. Eterovich
IPC分类号： B29C4577
CPC分类号： B29C45/76 , B29C45/82 , B29C2045/1792 , B29C2945/76006 , B29C2945/76113 , B29C2945/7612 , B29C2945/7617 , B29C2945/76187 , B29C2945/76214 , B29C2945/7623 , B29C2945/76307 , B29C2945/76598 , B29C2945/76605 , B29C2945/76648 , B29C2945/76692 , B29C2945/76709 , B29C2945/76943
摘要： An energy efficient general purpose injection molding employs a hydraulic drive for injection and clamp machine functions and an electric drive for screw recovery. Both drives use AC “squirrel cage” induction motors under vector control. Speed command signals for the vector controls are generated by the machine's controller utilizing state transition and predictive signal techniques to account for motor and motor/pump response latencies. Hydraulic drive efficiency is improved by varying motor speed/pump output to match cycle requirements to retain hydraulic drive advantages for mold clamp and injection functions while improving the electric drive performance for screw recovery.
摘要翻译：一种高能效的通用注射成型采用液压驱动装置，用于注射和夹紧机械功能以及用于螺杆回收的电动驱动装置。两个驱动器都采用矢量控制下的“鼠笼式”感应电动机。用于矢量控制的速度指令信号由机器的控制器利用状态转换和预测信号技术产生，以解释电动机和电动机/泵的响应延迟。通过改变电机速度/泵输出来提高液压驱动效率，以符合循环要求，以保持模具夹紧和注塑功能的液压驱动优势，同时提高螺杆回收的电气驱动性能。

8. 发明授权

US5513115A Clamp control for injection molding machine 失效
标题翻译：注塑机夹具控制
公开(公告)号：US5513115A
公开(公告)日：1996-04-30
申请号：US518249
申请日：1995-08-23
申请人： Thomas H. Richards , Thomas C. Bulgrin , Alexander M. Galan
发明人： Thomas H. Richards , Thomas C. Bulgrin , Alexander M. Galan
IPC分类号： B29C45/76 , B29C45/78
CPC分类号： B29C45/78 , B29C45/76
摘要： A control system utilizing a programmable controller for an injection molding machine in which the controller is periodically scanned in response to input signals to produce output control signals is provided with an impulse response filter arrangement. The impulse response filter senses a plurality of current and past sensor input signals to accurately predict the occurrence of a variable triggering event which will in fact be sensed by a sensor. A predictive sensor signal is then generated which is inputted to the controller in advance of the occurrence of the triggering event and at a time which corresponds to the processor scan time so that the controller generates the desired output at the precise time the triggering event occurs thus eliminating controller response latency from the control system.
摘要翻译：利用脉冲响应滤波器装置，提供一种控制系统，其利用用于注射成型机的可编程控制器，其中响应于输入信号周期性地扫描控制器以产生输出控制信号。脉冲响应滤波器感测多个当前和过去的传感器输入信号，以准确地预测实际上由传感器感测的可变触发事件的发生。然后生成预测传感器信号，其在触发事件的发生之前被输入到控制器，并且在与处理器扫描时间相对应的时间，使得控制器在触发事件发生的精确时间产生期望的输出从控制系统中消除控制器响应延迟。

9. 发明授权

US5456870A Barrel temperature state controller for injection molding machine 失效
标题翻译：筒式温度状态控制器注塑机
公开(公告)号：US5456870A
公开(公告)日：1995-10-10
申请号：US247082
申请日：1994-05-20
申请人： Thomas C. Bulgrin
发明人： Thomas C. Bulgrin
IPC分类号： B29C45/76 , B29C45/78 , B29C45/74 , B29B7/82
CPC分类号： B29C45/76 , B29C45/78
摘要： An improved temperature control system using a state controller with two degrees of freedom to regulate the temperature of the barrel of an injection molding machine is disclosed. The control system divides the temperature of the barrel into longitudinally-extending zones and radially extending layers within each zone. Heat transfer calculations which include the effects of heat transfer between all the layers within the zones are performed for a set time in the future to accurately determine the heat needed from the heater band to reach the operator set point temperature. The duty cycle for the heater bands is thus accurately set to give a more responsive and accurate control than heretofore possible. The controller additionally includes factors for accounting for heat disturbances present in the injection molding process. In addition each system is calibrated for each machine to insure accurate formulation of machine specific parameters such as heat transfer co-efficients used in the control.
摘要翻译：公开了一种改进的温度控制系统，其使用具有两个自由度的状态控制器来调节注射成型机的筒的温度。控制系统将机筒的温度分为纵向延伸区域和每个区域内的径向延伸层。包括在区域内的所有层之间的热传递的影响的热传递计算在将来的设定时间内执行，以精确地确定从加热器带到达操作者设定点温度所需的热量。因此，加热器带的占空比被准确地设置为给出比以前更可能的更灵敏和准确的控制。该控制器还包括考虑注射成型过程中存在的热障碍的因素。此外，每个系统都对每个机器进行校准，以确保机器特定参数的精确配方，如控制中使用的传热系数。

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