METHOD FOR CONTROLLING AN ELECTRIC MOTOR OF A SERVO-PUMP OF AN INDUSTRIAL MACHINE TO MODIFY A HYDRAULIC PRESSURE APPLIED BY THE SERVO-PUMP TO A LOAD
The invention relates to a method for controlling an electric motor (M) associated with a servo-pump (200) of an industrial machine in order to modify a hydraulic pressure applied by the servo-pump (200) to a hydraulic load (10). The electric motor can be moved on the basis of electric actuation sig...
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| creator | SIMONI, Luca VISIOLI, Antonio COLOMBO, Davide MOLTENI, Roberto |
| description | The invention relates to a method for controlling an electric motor (M) associated with a servo-pump (200) of an industrial machine in order to modify a hydraulic pressure applied by the servo-pump (200) to a hydraulic load (10). The electric motor can be moved on the basis of electric actuation signals generated by an electronic control unit (100). The method comprises the steps of:
- providing the electronic control unit with a first signal (Pfed) indicative of a current pressure value detected in a hydraulic circuit (11) of the servo-pump;
- providing the electronic control unit with a second signal (Pref) indicative of a reference pressure value;
- providing the electronic control unit with a third signal (Sfed) indicative of a displacement (¸) angle of a rotor of the motor, detected on a plane orthogonal to the rotation axis from a reference position;
- generating, based on said first, second and third signals, a fourth signal (BTref) indicative of a driving torque value which can be applied to the motor and associated with a torque control signal (Tref) configured to control the movement of the motor of the servo-pump. The method further comprises the following steps carried out by the electronic control unit:
- comparing the first and the second signals to generate a pressure error signal (PE);
- multiplying the pressure error signal by a trigonometric function calculated in relation to the displacement angle obtained from the third signal to generate a first transformed signal (PEt);
- integrating over time the first transformed signal to generate a first integrated signal (PEint);
- multiplying the first integrated signal by the trigonometric function calculated in relation to the sum of said displacement angle (¸) and an offset angle (¸ off ) to generate a second transformed signal (Tff), which is representative of a compensation driving torque value;
- adding the second transformed signal to the fourth signal to generate the control signal (Tref). |
| format | Patent |
| fullrecord | <record><control><sourceid>epo_EVB</sourceid><recordid>TN_cdi_epo_espacenet_EP3174192B1</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><sourcerecordid>EP3174192B1</sourcerecordid><originalsourceid>FETCH-epo_espacenet_EP3174192B13</originalsourceid><addsrcrecordid>eNqNjLEKwjAURbs4iPoP7wc6VAVxTJMXE0jyQpoInUqROIkW6qf4wQZxcHS6XO45d1m9LEZFAiQF4ORiIGO0OwFzgAZ5DJqDpVhWksCgw3Cm2ifrP92BdiJ1hWIGLONKO4RIxRBa9oVXvQgsmXLiA3ZdCgjMe6NRQNtDVPj7WEQGhphYV4vreJvz5purCiRGruo8PYY8T-Ml3_NzQL9rDvvmuG2b3R_IG4PkQKw</addsrcrecordid><sourcetype>Open Access Repository</sourcetype><iscdi>true</iscdi><recordtype>patent</recordtype></control><display><type>patent</type><title>METHOD FOR CONTROLLING AN ELECTRIC MOTOR OF A SERVO-PUMP OF AN INDUSTRIAL MACHINE TO MODIFY A HYDRAULIC PRESSURE APPLIED BY THE SERVO-PUMP TO A LOAD</title><source>esp@cenet</source><creator>SIMONI, Luca ; VISIOLI, Antonio ; COLOMBO, Davide ; MOLTENI, Roberto</creator><creatorcontrib>SIMONI, Luca ; VISIOLI, Antonio ; COLOMBO, Davide ; MOLTENI, Roberto</creatorcontrib><description>The invention relates to a method for controlling an electric motor (M) associated with a servo-pump (200) of an industrial machine in order to modify a hydraulic pressure applied by the servo-pump (200) to a hydraulic load (10). The electric motor can be moved on the basis of electric actuation signals generated by an electronic control unit (100). The method comprises the steps of:
- providing the electronic control unit with a first signal (Pfed) indicative of a current pressure value detected in a hydraulic circuit (11) of the servo-pump;
- providing the electronic control unit with a second signal (Pref) indicative of a reference pressure value;
- providing the electronic control unit with a third signal (Sfed) indicative of a displacement (¸) angle of a rotor of the motor, detected on a plane orthogonal to the rotation axis from a reference position;
- generating, based on said first, second and third signals, a fourth signal (BTref) indicative of a driving torque value which can be applied to the motor and associated with a torque control signal (Tref) configured to control the movement of the motor of the servo-pump. The method further comprises the following steps carried out by the electronic control unit:
- comparing the first and the second signals to generate a pressure error signal (PE);
- multiplying the pressure error signal by a trigonometric function calculated in relation to the displacement angle obtained from the third signal to generate a first transformed signal (PEt);
- integrating over time the first transformed signal to generate a first integrated signal (PEint);
- multiplying the first integrated signal by the trigonometric function calculated in relation to the sum of said displacement angle (¸) and an offset angle (¸ off ) to generate a second transformed signal (Tff), which is representative of a compensation driving torque value;
- adding the second transformed signal to the fourth signal to generate the control signal (Tref).</description><language>eng ; fre ; ger</language><subject>AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING ; BLASTING ; CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORSOR DYNAMO-ELECTRIC CONVERTERS ; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS ; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER ; ELECTRICITY ; GENERATION ; HEATING ; LIGHTING ; MECHANICAL ENGINEERING ; PERFORMING OPERATIONS ; POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS ; PUMPS ; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS ; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR ; SHAPING OR JOINING OF PLASTICS ; TRANSPORTING ; WEAPONS ; WORKING OF PLASTICS ; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL</subject><creationdate>2021</creationdate><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20210526&DB=EPODOC&CC=EP&NR=3174192B1$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,780,885,25564,76547</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20210526&DB=EPODOC&CC=EP&NR=3174192B1$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>SIMONI, Luca</creatorcontrib><creatorcontrib>VISIOLI, Antonio</creatorcontrib><creatorcontrib>COLOMBO, Davide</creatorcontrib><creatorcontrib>MOLTENI, Roberto</creatorcontrib><title>METHOD FOR CONTROLLING AN ELECTRIC MOTOR OF A SERVO-PUMP OF AN INDUSTRIAL MACHINE TO MODIFY A HYDRAULIC PRESSURE APPLIED BY THE SERVO-PUMP TO A LOAD</title><description>The invention relates to a method for controlling an electric motor (M) associated with a servo-pump (200) of an industrial machine in order to modify a hydraulic pressure applied by the servo-pump (200) to a hydraulic load (10). The electric motor can be moved on the basis of electric actuation signals generated by an electronic control unit (100). The method comprises the steps of:
- providing the electronic control unit with a first signal (Pfed) indicative of a current pressure value detected in a hydraulic circuit (11) of the servo-pump;
- providing the electronic control unit with a second signal (Pref) indicative of a reference pressure value;
- providing the electronic control unit with a third signal (Sfed) indicative of a displacement (¸) angle of a rotor of the motor, detected on a plane orthogonal to the rotation axis from a reference position;
- generating, based on said first, second and third signals, a fourth signal (BTref) indicative of a driving torque value which can be applied to the motor and associated with a torque control signal (Tref) configured to control the movement of the motor of the servo-pump. The method further comprises the following steps carried out by the electronic control unit:
- comparing the first and the second signals to generate a pressure error signal (PE);
- multiplying the pressure error signal by a trigonometric function calculated in relation to the displacement angle obtained from the third signal to generate a first transformed signal (PEt);
- integrating over time the first transformed signal to generate a first integrated signal (PEint);
- multiplying the first integrated signal by the trigonometric function calculated in relation to the sum of said displacement angle (¸) and an offset angle (¸ off ) to generate a second transformed signal (Tff), which is representative of a compensation driving torque value;
- adding the second transformed signal to the fourth signal to generate the control signal (Tref).</description><subject>AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING</subject><subject>BLASTING</subject><subject>CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORSOR DYNAMO-ELECTRIC CONVERTERS</subject><subject>CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS</subject><subject>CONVERSION OR DISTRIBUTION OF ELECTRIC POWER</subject><subject>ELECTRICITY</subject><subject>GENERATION</subject><subject>HEATING</subject><subject>LIGHTING</subject><subject>MECHANICAL ENGINEERING</subject><subject>PERFORMING OPERATIONS</subject><subject>POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS</subject><subject>PUMPS</subject><subject>PUMPS FOR LIQUIDS OR ELASTIC FLUIDS</subject><subject>SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR</subject><subject>SHAPING OR JOINING OF PLASTICS</subject><subject>TRANSPORTING</subject><subject>WEAPONS</subject><subject>WORKING OF PLASTICS</subject><subject>WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>2021</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNqNjLEKwjAURbs4iPoP7wc6VAVxTJMXE0jyQpoInUqROIkW6qf4wQZxcHS6XO45d1m9LEZFAiQF4ORiIGO0OwFzgAZ5DJqDpVhWksCgw3Cm2ifrP92BdiJ1hWIGLONKO4RIxRBa9oVXvQgsmXLiA3ZdCgjMe6NRQNtDVPj7WEQGhphYV4vreJvz5purCiRGruo8PYY8T-Ml3_NzQL9rDvvmuG2b3R_IG4PkQKw</recordid><startdate>20210526</startdate><enddate>20210526</enddate><creator>SIMONI, Luca</creator><creator>VISIOLI, Antonio</creator><creator>COLOMBO, Davide</creator><creator>MOLTENI, Roberto</creator><scope>EVB</scope></search><sort><creationdate>20210526</creationdate><title>METHOD FOR CONTROLLING AN ELECTRIC MOTOR OF A SERVO-PUMP OF AN INDUSTRIAL MACHINE TO MODIFY A HYDRAULIC PRESSURE APPLIED BY THE SERVO-PUMP TO A LOAD</title><author>SIMONI, Luca ; VISIOLI, Antonio ; COLOMBO, Davide ; MOLTENI, Roberto</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_EP3174192B13</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>eng ; fre ; ger</language><creationdate>2021</creationdate><topic>AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING</topic><topic>BLASTING</topic><topic>CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORSOR DYNAMO-ELECTRIC CONVERTERS</topic><topic>CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS</topic><topic>CONVERSION OR DISTRIBUTION OF ELECTRIC POWER</topic><topic>ELECTRICITY</topic><topic>GENERATION</topic><topic>HEATING</topic><topic>LIGHTING</topic><topic>MECHANICAL ENGINEERING</topic><topic>PERFORMING OPERATIONS</topic><topic>POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS</topic><topic>PUMPS</topic><topic>PUMPS FOR LIQUIDS OR ELASTIC FLUIDS</topic><topic>SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR</topic><topic>SHAPING OR JOINING OF PLASTICS</topic><topic>TRANSPORTING</topic><topic>WEAPONS</topic><topic>WORKING OF PLASTICS</topic><topic>WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL</topic><toplevel>online_resources</toplevel><creatorcontrib>SIMONI, Luca</creatorcontrib><creatorcontrib>VISIOLI, Antonio</creatorcontrib><creatorcontrib>COLOMBO, Davide</creatorcontrib><creatorcontrib>MOLTENI, Roberto</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>SIMONI, Luca</au><au>VISIOLI, Antonio</au><au>COLOMBO, Davide</au><au>MOLTENI, Roberto</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>METHOD FOR CONTROLLING AN ELECTRIC MOTOR OF A SERVO-PUMP OF AN INDUSTRIAL MACHINE TO MODIFY A HYDRAULIC PRESSURE APPLIED BY THE SERVO-PUMP TO A LOAD</title><date>2021-05-26</date><risdate>2021</risdate><abstract>The invention relates to a method for controlling an electric motor (M) associated with a servo-pump (200) of an industrial machine in order to modify a hydraulic pressure applied by the servo-pump (200) to a hydraulic load (10). The electric motor can be moved on the basis of electric actuation signals generated by an electronic control unit (100). The method comprises the steps of:
- providing the electronic control unit with a first signal (Pfed) indicative of a current pressure value detected in a hydraulic circuit (11) of the servo-pump;
- providing the electronic control unit with a second signal (Pref) indicative of a reference pressure value;
- providing the electronic control unit with a third signal (Sfed) indicative of a displacement (¸) angle of a rotor of the motor, detected on a plane orthogonal to the rotation axis from a reference position;
- generating, based on said first, second and third signals, a fourth signal (BTref) indicative of a driving torque value which can be applied to the motor and associated with a torque control signal (Tref) configured to control the movement of the motor of the servo-pump. The method further comprises the following steps carried out by the electronic control unit:
- comparing the first and the second signals to generate a pressure error signal (PE);
- multiplying the pressure error signal by a trigonometric function calculated in relation to the displacement angle obtained from the third signal to generate a first transformed signal (PEt);
- integrating over time the first transformed signal to generate a first integrated signal (PEint);
- multiplying the first integrated signal by the trigonometric function calculated in relation to the sum of said displacement angle (¸) and an offset angle (¸ off ) to generate a second transformed signal (Tff), which is representative of a compensation driving torque value;
- adding the second transformed signal to the fourth signal to generate the control signal (Tref).</abstract><oa>free_for_read</oa></addata></record> |
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| subjects | AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING BLASTING CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORSOR DYNAMO-ELECTRIC CONVERTERS CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS CONVERSION OR DISTRIBUTION OF ELECTRIC POWER ELECTRICITY GENERATION HEATING LIGHTING MECHANICAL ENGINEERING PERFORMING OPERATIONS POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS PUMPS FOR LIQUIDS OR ELASTIC FLUIDS SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR SHAPING OR JOINING OF PLASTICS TRANSPORTING WEAPONS WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL |
| title | METHOD FOR CONTROLLING AN ELECTRIC MOTOR OF A SERVO-PUMP OF AN INDUSTRIAL MACHINE TO MODIFY A HYDRAULIC PRESSURE APPLIED BY THE SERVO-PUMP TO A LOAD |
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