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公开(公告)号：EP0691941A1
公开(公告)日：1996-01-17
申请号：EP94910491.0
申请日：1994-03-28
CPC分类号： C03B9/403 , C03B9/447 , G05B19/19 , G05B2219/33215 , G05B2219/34008 , G05B2219/34013 , G05B2219/35585 , G05B2219/37313 , G05B2219/37401 , G05B2219/41248 , G05B2219/41301 , G05B2219/41311 , G05B2219/42174 , G05B2219/43058
摘要： A control system for a member driven by the pneumatic piston and cylinder (15) under the control of a solenoid driven proportional pneumatic valve (16) which receives valve command signals from a servo control card (32) which includes a microprocessor and a memory, the card repetitively calculating acceleration-limited values for the command signals on the basis of an algorithm and a motion profile stored in the memory, the values used in computing the algorithm being derived from transducers (25, 26, 27) which sense the pressures of opposite sides of the piston and the position of the driven member.
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公开(公告)号：EP0691941B1
公开(公告)日：1997-05-02
申请号：EP94910491.3
申请日：1994-03-28
IPC分类号： C03B9/41
CPC分类号： C03B9/403 , C03B9/447 , G05B19/19 , G05B2219/33215 , G05B2219/34008 , G05B2219/34013 , G05B2219/35585 , G05B2219/37313 , G05B2219/37401 , G05B2219/41248 , G05B2219/41301 , G05B2219/41311 , G05B2219/42174 , G05B2219/43058
摘要： A control system for a member driven by the pneumatic piston and cylinder (15) under the control of a solenoid driven proportional pneumatic valve (16) which receives valve command signals from a servo control card (32) which includes a microprocessor and a memory, the card repetitively calculating acceleration-limited values for the command signals on the basis of an algorithm and a motion profile stored in the memory, the values used in computing the algorithm being derived from transducers (25, 26, 27) which sense the pressures of opposite sides of the piston and the position of the driven member.
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公开(公告)号：EP0691940B1
公开(公告)日：1997-05-02
申请号：EP94910490.5
申请日：1994-03-28
IPC分类号： C03B9/41
CPC分类号： C03B9/1938 , C03B9/1936 , C03B9/41 , G05B19/19 , G05B2219/34008 , G05B2219/34013 , G05B2219/35585 , G05B2219/37313 , G05B2219/37401 , G05B2219/41248 , G05B2219/41301 , G05B2219/42174
摘要： A control system is described for controlling the movement of a plunger for use in forming parisons in a glassware manufacturing machine in which the plunger is driven between first and second positions by a pneumatic piston and cylinder device in which pressure sensors sense the pressure on opposite sides of the piston. An electronic signal processing system incorporates a memory in which a motion profile and force limits are stored and which receives through each cycle a feedback signal relating to the transducer position of the plunger and from the pressure sensors the pressure on opposite sides of the piston and which produces control signals for a solenoid driven proportional pneumatic valve in accordance with a repetitive algorithm which takes account of (a) the displacement of the plunger from the motion profile, (b) the velocity of the plunger as derived from the rate of change of its position, and (c) the force exerted on the plunger as derived from the pressure difference across the piston. In this way the valve supplies air to the piston and cylinder device to cause the plunger to move from rest at a first position, for a first period of time in a manner limited by the motion profile. Thereafter a first force limit is applied to the plunger. Movement during a second period of time is controlled in a manner limited by the reduction from the first force limit to a second force limit and during a third period of time is limited by the second force limit.
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公开(公告)号：EP0691940A1
公开(公告)日：1996-01-17
申请号：EP94910490.0
申请日：1994-03-28
CPC分类号： C03B9/1938 , C03B9/1936 , C03B9/41 , G05B19/19 , G05B2219/34008 , G05B2219/34013 , G05B2219/35585 , G05B2219/37313 , G05B2219/37401 , G05B2219/41248 , G05B2219/41301 , G05B2219/42174
摘要： A control system is described for controlling the movement of a plunger for use in forming parisons in a glassware manufacturing machine in which the plunger is driven between first and second positions by a pneumatic piston and cylinder device in which pressure sensors sense the pressure on opposite sides of the piston. An electronic signal processing system incorporates a memory in which a motion profile and force limits are stored and which receives through each cycle a feedback signal relating to the transducer position of the plunger and from the pressure sensors the pressure on opposite sides of the piston and which produces control signals for a solenoid driven proportional pneumatic valve in accordance with a repetitive algorithm which takes account of (a) the displacement of the plunger from the motion profile, (b) the velocity of the plunger as derived from the rate of change of its position, and (c) the force exerted on the plunger as derived from the pressure difference across the piston. In this way the valve supplies air to the piston and cylinder device to cause the plunger to move from rest at a first position, for a first period of time in a manner limited by the motion profile. Thereafter a first force limit is applied to the plunger. Movement during a second period of time is controlled in a manner limited by the reduction from the first force limit to a second force limit and during a third period of time is limited by the second force limit.
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